BRITISH COLUMBIA DEPARTMENT OF MINES Hon. W. 1. ASSELSTINE, Mintster JOHN F. WALKER, Deputy Minister - BULLETINNo. 9 Molybdenum Deposits

British Columbia bu JOHN S. STEVENSON

1940

. Key map showing principal molybdenite OCCwrenOeS in British Columbia. CONTENTS.

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9 11 16 19 20 28 33 34

4.7 4.9 50 51 54 58 61 67 70 73

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79 ILLUSTRATIONS.

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Keymap showing principal molybdenite occurrences in British Columbia ...... Frontispiece Figure (1) - Anticlimaxmolybdenite property: pace, compass andbarometer survey ...... i!3

Figure (2) - Consolidated Miningand Smelting Company molybdeniteproperty, Boss Mountain.General plan of workings. Tape, compass survey...... :. _ ...... 37 Figure (3) - ConsolidatedMining and Smelting Company molybdeniteproperty, Boss Mountain.Detail of creekshowings.

Tape,compass survey ...... 39

Figure (4) - Tidewater molybdenum property.Plan showing surfacegeology ...... 61

Figure (5) - Tidewater molybdenum property.Plan show ing undergroundgeologyshowing I63

Figure (6) - Tidewater molybdenum property. Assay plan ...... I67

Figure (7) - Alliesmolybdenite property: pace, com- pass andbarometer survey ...... 76

Plate I, A - Mineralizedboulder on Stella molybden- iteproperty, showing typicalribbon- structure of vein, resulting from paper- thin layers of molybdenite in vein quartz. Boulder 3 feet long ...... " ...... 12

Plate I, B - Twin peaks of Bossmountain ...... 12

Plate 11, A - Camp of ConsolidatedMining and Smelting Company on their Bossmountain molybden- ite property; camp at headwaters of M olybdenite Creek Molybdenite 12

Plate 11, B - Specimenshowing brecciatednature of mineralizedfracture-zone, Bossmountain molybdeniteproperty of theConsolidated Mining and Smelting Company ...... 12 PREFACE.

The presentbulletin includes geological descriptions of molybdenum deposits visited by the writer during the course of field work from 1937 to 1939, inclusive. ITith the excep- tion of the deposit at Alice Arm, all the more importantde- posits and many, thoughnot all, of theless important deposits inthe Province were visited by thewriter. J. T. Mandy of the Department of Minesexamined the Alice Arm deposit in 1939,and a synopsis of his report is included in this bulletin.

To make the bulletin more comprehensive,an introductory chapter is included that briefly describes the mineralogy, geologicaloccurrence, metallurgy andeconomics of molybdenum

An appendixhas been added to the bulletin in which brief notesare given concerning all the known occurrencesof molyb- denite in British Columbia that have come to the attention of the MinesDepartment. This appendix includes (1) occurrences fully described in this bulletin, marked with an asterisk, and (2) occurren'cesdescribed elsewhere as indicated by the key of references arid concerning many of whichonly incomplete in- formation is available.

The writer wishes to acknowledge the kind assistance and cooperationrendered by mine officials and prospectors associ- atedwith the properties visited. Alan R. Smith,the writer's student assistant during the field seasons of 1938and 1939, greatly facilitated the field'work by his capable and hearty cooperation. INTRODUCTION.

Molybdenum Minerals

Thereare many molybdenum minerals,but only one, molyb- denite (MoS2) is of commercialimportance. The properties of molybdenite and of the more common molybdenum minerals are listed below.

Molybdenite - Composition - Molybdenum sulphide, IwoS;! = molybdenum, 60.0 percent, sulphur, 40:O percent.

Lustremetallic. Colour leadgray, bluish gray streak as com- paredwith the carbon-black streak of graphite. Opaque. Hard- ness, 1 to 1.5, Sectile. Laminae flexiblebut not elastic. Commonly foliated,in rosettes of crystals of finegranular.

Molybdite - Composition - molybdenum trioxide, MoO3. Colour straw-yellow.Molybdite is oftenconfused with molybdic ocher. Common oxidation product of molybdenite.

Molybdicocher - Composition - hydrous ferricmolybdate. Colouryellow. Often mistakenly called molybdite. Common oxi- dation product of molybdenite.

Wulfehite - Composition - leadmolybdate, PbMoOq = molybdenum trioxide39.3 per cent, lead oxide, 60.7 percent. Lustre resinous - colourvaries, grey, brown, orange-yellow,olive- green,orange tobright red. Streak white. Subtransparent. Hardness 2-3. Fracturesubconchoidal. Occurs as tabular crys- tals or granularand massive.

Powellite - Calciumjmolybdate,chillagite, lead molybdatewith leadtungstate, and koechlinite, bismuth molybdate, are rare.

-1- GeologicalOccurrence

The following notes concerning the geological occurrence of molybdenite are given to assist in evaluating types of molybdenite deposits that may be found during the course of prospecting for this mineral.

Most molybdenite deposits are genetically related to ratheracid igneous rocks such as granite,granodiorite and quartz-diorite.Deposits associated with diorite and more basictypes are rare. 1n.most instances the deposit occurs w!!thin the body of the igneousrock itself, or close to it.

Nolybdenitedeposits include the following types, listed inorder of importance:(1) silicified fracture-zones: (2) quartzveins; (3).pegmatites and aplites: (4) high-temper- aturereplacement deposits: (5j certaindisseminated chalcopy- rite deposits.

Silicifiedfracture-zones are characterized by brecciated . rock, the fragments of whichhave been sealed by vein-quartz andmolybdenite. The molybdenite may occur as coarse plates along the fractures, or as very fine grains within the quartz veinlets. The form of ore-body is commonly that of a'pipe or stock with the vertical dimension greater than the horizontal. This type of depositusually possesses a greater continuity of mineralization and resultant larger tonnage of ore than the other types of molybdenitedeposits.

Molybdenite-bearingquartz veins are widespread, but the amount of molybdeniteobtained from such deposits is notlarge. The veins range in width from a fraction of an inch to several feet, and fromshort lenses a few feetlong to veinsseveral hundred feet in length. However, notonly are the veins often lenticular and discontinuousin length, but the molybdenite mineralization tends to be spotty in its distribution within thevein. For thesereasons it is alwayswise to do a consider- able amountof development on such a deposit before making com- mitmentsconcerning possible tonnages.

The mineralogy or" quartz-molybdeniteveins is simple,con- sisting usually of quartz,molybdenite and pyrite, and occasion- ally chalcopyrite, sphalerite and galena.

Molybdenite-bearing pegmatite and aplite dykes are common, particularlyin eastern Canada. The form ora pegmatitedyke is apt to bedecidedly lenticular, aplites not so much so. The amount of molybdeniteobtained from pegmatites and aplites is notlarge, and, with a fewexceptions, most occurrencesare of more scientific than economicimportance.

Two types of hightemperature replacement deposits cc-. . casionallycontain a little molybdenite. One typecomprises bodies of lime-silicateand associated copper, iron and molyb- denum sulphides that have formed by replacement of limestone. Because of the common lenticular nature of limestonereplaoe- ment bodies and of the complex metallurgy necessary to extract themolybdenite from the intimately intergrown sulphides, that characterise this type of high temperature replacement deposit, thesedeposits are usually not of economic importance. The second type of high temperature replacement body is that where schists have been replaced by bodies that consist of quartz, feldspar,pyrrhotite andmolybdenite; theyare probably close- lyrelated genetically to replacement-pegmatites. These re- placementbodies tend to belenticular and sparselymineral.- ized by molybdenite. Most of thesedeposits are again of more scientificthan economicimportance,

A type of deposit which is not represented in British Columbia andonly, so faras is known to the writer, found in thesouth-western United States andMexico, is that which con- sists largely of chalcopyrite and/or chalcocitedisseminated throughlarge bodies of graniticrocks, whichcontain a small amount of molybdeniteper ton. These deposits comprise large- scale coppermining operations and themolybdenite is recovered as a by-productmolybdenite concentrate from copper ores. Be- cause of thelarge tonnage of copperore treated, the amount of by-productmolybdenite is large. Such depositsinclude those at Bingham, Utah;Chino, New Mexico; Miami, Arizonaand Cananea,Mexico.

Metallurgy

Molybdeniteores always require concentration. It is not economically practical to hand-short mine-runore to a gradeacceptable by ferro-metallurgical plants, the ultimate purchasers of molybdenite. Inasmuch asthere are very few custom mills for molybdeniteores, and none in British Colum- bia, it is necessarythat any owner or prospectivepurchasw of a molybdenite property bear in mind the.probable necessity of doing his own concentrating.

Becauseof its flaky nature,molybdenite is notamenable to gravity concentration and flotation is used exclusivelyin its recovery. In a good mill a recovery of 80 to 90 percent. is customary. A flotationconcentrate ranging from 80 to !30 percent. molybdenite (MoSz) is usually made andshipped a:$

-3- such to metallurgical plants.

The ordinaryflotation mill-circuit is used.This employs theusual jaw-crushers, ball-mills, classifiers, rougher, scavengerand cleaner cells, thickeners, filters anddrying pans. In a few depositsthe molybdenite is inlarge crystals and it is not necessary to grind very finely, but in mostde- positsthe molybdenite is veryfine-grained and it is neces- sary to grind to minus 200 mesh.Because it is essentialto keepthe coppercontent of theconcentrate down to Copper(Cu) 0.2 percent., a good separationmust be made betweenmolyb- denite andchalcopyrite. The driedmolybdenite concentrate is packed in either heavy jutesacks or oak barrels for shipment to metallurgical plants for processing into molybdenum car- bide,ferro-molybdenite, calcium molybdate, or intowhatever form of molybdenum the smelters require for addition into the steel or steel-alloyfurnaces.

Economics- of Molybdenum -Uses:-- Most of the molybdenum.produced is used in the iron and steelindustry, and lesser amounts in thechemical and electricalindustries.

The concentrate received from the mines is a concentrate of molybdenite (MoS~),but for industry this is convertedinto one of thefollowing forms: (a) ferro-molybdenum containing 60 to 65 percent. molybdenum, or (b)calcium tungstate contain- ing 35 to 45 percent. molybdenum, or (e)less frequently molyb- denum oxidebriquets, or (d)the pure metal.

In the iron and steel industry, molybdenum is added to thesteel both in the open-hearth or electricfurnace as ei- ther ferro-molybdenum or calciummolybdate, although in 1939 experiments in adding molybdenum sulphide are reported to have met with some success.Other alloying metals are usually used withthe molybdenum compound. In processesrecently developed in the making of high-speed tool steels, molybdenum is being substituted for tungsten as. thealloying metal of importance.

Molybdenum steels are reported to possess the following desirablequalities: greater hardness and strength at high temperatures,freedom from scaling and ease of forging,and resistance to creep and elongation at high temperatures.

In addition to molybdenum steels, there are many special alloys of molybdenum with cobalt, chromium and nickel that con- sume a fair amount of molybdenum. The mostrecent development in the use of molybdenum-alloysconsists in plating molybdenum-

-4- nickelover cadmium to give a molybdenum-black electroplating finish.

Molybdenum finds several uses in the chemical industry. .It is used as a reagent in making certain analytical determin- ations, as sodiummolybdate in the ink aid dye industry, an.d as leadmolybdate in the production of glassenamels.

In theelectrical industry, molybdenum is usedas the puremetal in the form of thin wires, ribbons or plates for incandesoentlamps, radio tubes, heating elements in firnaces, in X-ray tubesand as electrical contact points..

A growinguse for the metal is beingdeveloped in the sin- tered powdered metalindustry.

Specifications of product,prices and tariffs:-- Inasmuch E.S mostconcentrates arepurchased on a contractbasis, require- ments concerning the grade of the concentrate and the maxin~um amount of impurities permissible vary accordicg to the uses: to which thepurchaser is goingto put the concentrates.

The product is marketed as a concentrate ranging from 80 to 90 percent. contained molybdenite (MoS2).Copper is the mostundesirable impurity, and.most purchasers will notaccept concentratescontaining over 0.2per cent. Copper (Cu). Iron shouldnot exceed 10 percent.; bismuth and tin notover 0.5 percent. each.

The price lor molybdenite is quotednominally at New Jlork as 45 centsper lb. of containedmolybdenite (MoSz), f.o.b., mines, on a 90 percent. concentrate, and, likewise nominally, at London at 48 shillingsper long ton unit of 22.4lbs. for an 85 to 90 percent. concentrate (E. and M.J. Metaland Miin- era1Markets - Feb.29, 1940). An importtariff into the UnitedStates places a duty of 35 centsper pound of contaihed metallic molybdenum, or 21 centsper'pound of molybdenite (MoSz) inore or concentrates.

The main desideratum of a purchaser of molybdenite is an adequatepresent supply of a uniformlyhigh-grade product. In- asmuch as the material is used as an alloying metal in a steel bath,small deviations from the grade of theproduct and small increasesin undesirable impurities will alter very consider- ably the physical characteristics of the resulting steel alloy.

Grades of mineableore:-- As a guide to what constitutes mine- ableore, the grades of ore at two importantoperating molyb- denitemines are given. At Climax,Colorado, 12,000 tons (of

-5- ore daily are being mined from a large, uniformly mineralized body of shearedgranitic rock; the ore averages 0.606 percent. molybdenite,(NoS2). At Questa, New Mexico, a much smaller tonnage of ore is being minedfrom severalnarrow quartz veins; theQuesta ore ranges from 3 to 15per cent. molybdenite (MoS2) asmined, but byhand sorting and screeningthe mill feed is kept at or above 6 percent. molybdenite (MoS2).

These two examples,Climax and Questa, show that(1) in a depositwhere the molybdenite is uniformly distributed throughan area or zone of shearedrock, the tonnage of ore is much greater and much more certainand, therefore, the permis- sible grade of ore much lower than in the quartz-vein type of molybdenitedeposit, and that (2) in a quartz-veintype of de- positthe proven, as well as the probable ore, is much less and,therefore, the permissible grade of ore much higherthan intype (1). In considering a property of type (l), theore widthsshould not be less than a miningwidth, of say 3 feet, the indicated length should be 200 feet or moreand the assay gradenot less than 1 percent. molybdenite (MoS2). In con- sidering a property of type (2), thequartz-vein type, ore widthsshould be at least 1 foot or if theveins are smaller, they should be close enough togeth.er to permitmining both the veins and interveningwall rock all together; the indicated length of the ore zoneshould be.200 feet or more and the as- say across individual veins of a foot or more in width not less thansay 10 per cent. molybdenite (MoS7,).

Production:--Thegreatest part of the world's production of molybdenite comes fromthe United States, and most of the re- mainderfrom Mexico and Norway.

The Climax,Colorado mine of the Climax Molybdenum Com- panyproduced 78 percent. of the worldoutput, and 85 per cent. of theUnited States output in 1938. The onlyother im- portantmolybdenite mine in the United States is that of the MolybdeniteCorporation of America nearQuesta, New Mexico. However, a considerabletonnage of molybdenite is produced as a by-productfrom several of thelarge copper mines in the south-west;these include the Bingham Canyon, Utah, property of the Utah'Copper Ccmpany; the Chino, New Mexico, property of the Nevad.a Consolidated Copper Corporation;and the Miami, Arizona,property of the Miami Copper Company. Durj.ng 1939, by-productmolybdenite accounted for one-fourth of the United Statesproduction.

The Mexican output of molybdenite is a by-productconcen-

-6-

. trate in the treatment of copperores from the Cananea,Mexico, copperproperty of the GreeneCananea Copper Company; this mbe produced 483 metric tons of molybdenum in 193%.

The Norwegian production comes from a molybdenite mine at Knaben; this mineproduced 450 metric tons of molybdenum in 193%.

Chile,South America, entered into the world’s production picture in 1939 when the Bradencopper mine at Sewell,Chile, began the production of by-productmolybdenite.

Although the world’s leading producer of molybdenitedur- ing the last Great Nar was the Moss mine, at Quyon,Quebec, theproduction of molybdenitetoday from Canada is small. The ZenithMolybdenite Company, RenfrewCounty, Ontario, apparently theonly operation in 1938,produced 7 metrictons of concen- ‘crates. However,development work and metallurgicaltestirg of oreare being carried on at a number of propertiesin Quebec, Ontario and British Columbia.

-7- XorldProduction of

Molybdenum Ores and Concentrates, 1934-38, inMetric Tons

(Compiled by M.T. Latus, U.8.Bur. Mines, 1939, p. 619. j

Country 1934 . 1935 1936 1937 1938 II Australia: New South Xales (concentrates) (1) Queensland(concentrates) 20 Victoria(concentrates) -_ Burma " Canada (concentrates) " " " China (ore containing 45% Mo) 2 (2) (2) Chosen (ore) 104 106 80 Italy(ore) " " 861 Japan(dressed ore) 5 6 7 Mexico (Mo content) 467 687 534 Morocco, French(concentrates) (3) 149 190 187 AorNay (ti0 conteEt) 146 388 422 Peru(concentrates) 15 13 19 Rumania (Bi-Mo ore) 6 14 46 Turkey (ore) " " " UnitedStates (Mo content) 4247 5222 7795 Yugoslavia " 18 " - I (1) Le'ss than 1 ton. (2) Data notavailable. (3) Exports. It is to be noted that the greater part of the world's production of molybdenite comes from the Cordill.era, the moun- tain ranges that comprise the western part of NorthAmerica. Even exceptingthe Climax,Colorado deposit, which is respon- siblefor 85 percent. of theUnited States production, by far the greater part of theremainder comes from a section of the Cordillerathat extends from Mexico to Utah. The northerly extension of the Cordillera from the United States into Bri- tish Columbia is notessentially unlike that of the United States, and in view of thesuccess that has attended the de- velopment of molybdeniteprospects in the United States, pros- pecting L'or molybdeniteand the development of molybdenite prospects in the British Columbia section of the Cordillera. shouldbe encouraged.

The Martel Gold Mines,Limited of 715 Hall MARTEL (l)# Building, Vancouver, owns a gold-molybdenite property commonlyknown as theMartel. Thi.s propertyincludes the mineral claims Hat Nos. 1 to 11 inolus- ive,staked in 1933, the Bug Nos. 12 to14, inclusive, staked in 1933, the -Axe, stakedin 1932,the.BoFand - Boe No. 1, staked in 1933and the Dave, Mattand Vernon staked in 1933. " - The writer, accompanied by J. M. Cummings of this Department, examined the showings in July,1937.

The property is in VenablesValley, 13 miles north of Spence'sBridge and approximately 5 milesnorth-west of Martel, a station on theCanadian National Railway. k roadto the claimsleaves the Cariboo Highway at a point13 miles north of Spence'sBridge and goes south-westerly for 2 1/2 miles to Venables Valley, thence along the valley south-easterly fol- approximatelyhalf a mile to theproperty on thesouth-west side of thevalley. The camp is at the end or' a shortbranch- roadleading to the mine,and the workings are 180 feet above the,camp.

The hillside in the vicinity of theworkings is steep and coveredby an open-growth of light timber; the underbrush .is not heavy; The overburden is comparativelyshallow and rot-.k exposures ar,d bluffs are common, particularlyabove the wo:rk- ings.

The depositconsists of a group of small., lenticular quartzveins in argillaceous sediments and intercalated voi- f' This number appears on the key map (frontispiece) where it indicates the approximate position of the property.

-9- canics. The veinsrange in thickness from a knife-edge to 12 inches, and fromsections 2 feetlong to 60 feet in length. The mineralizationconsists of.quartz and small amounts of molybdenite. Where heaviest,the molybdenite occurs in paper- thinribbons that parallel the walls of the vein. In all, bgenty-sixsamples were taken from the .veins,adjoining wall rock and faultsunderground; one samplecontained: Molybden- ite,0.2 per cent.; all theother samples assayed traces and -nils. Samples assayed for gold and silver also ran traces and -nils, with the exception of one which assayed: Silver, 0.2 ouncesper ton.

The mainworking is anadit, 1032 feetlong, driven as follows: from theportal, south 10 degreeswest for 376 feet, thensouth 60 degrees west for 24 feet, then north 70 degrees west for 134 feetto the face. At 164 feet from theportal a shortworking extends north 75 degreeseast for 24 feet. At 178 feet fromthe portal, a working, known as the East Drift, extendssouth 55 degrees east for 112 feet,then south 20 de- grees east for 22 feet, then south 30 degrees west for 16 feet, thensouth 50 degrees west for 48 feet to the face. From the same point, 178 feet fromthe portal, a shortworking extends north 55 degreeswest for 24 feet to the collar of a winze', which is sulk on a 60-degree slope south 10 degrees west for 88 feet.This winze will bereferred to as the60-degree,winze. At a point 48 feet fromthe collar of thewinze, a workingex- tendssouth 75 degreeseast for 48 feet to the face. At 20 feetfrom the winze a short drift extends south 10 degreeswest for 12 feet a1or.g a 10-inchwide quartz vein. At 188 feet from theportal of the adit, a workingextends south 75 degreeswest for 20 feet. From the end ofthis working a winze is sunksouth 75 degreeswest for 55 feet on a 30-degreeslope. This winze will be referredto as the 30-degr.eewinze. Ten feet upfrom the bottom of the winze a working extends north 20 degrees west for 32 feet.

Between points164 and 178 feet from the portal, the adit follows two 6-inch quartz veins that strike north 40 degrees east and dip 70 degreesnorth-westward. To the north-east they die out in the wall, and tothe south-west, continuation of the veins is displaced15 feet south-easterly by a strongfault. The "East Drift" followsthis fault, strike north 48 degrees west,dip 60 degreessouth-westward, for 105 feet south-eas- terly and for 24 feet north-westerly; the 60-degree winze fol- lows down the dip of the fault at this point. Between178 feet and188 feet from the portal the main adit follows the veins, and then, at 188 feet,the branch working and 30-degree winzefollow the veins for a combined distance of 72 feet. Close to the entrance of the 30-degree winze the veins have

- 10 - beencut by a vertical fault that strikes north 80 degrees westand displaces the veins 6 inches. Down this winze,the veinsthat range from 1/2 aninch to 6 incheswide, are de- cidedlylenticular and discontinuous andtend to feather out into stringers.

At a point 48 feet from the collar of thewinze, a drift is driven along the vertical fault, and at a point 4 feet from the side of the winze,on the north-east or. footwall-side of the fault, th,is drift intersects the downward continuation of one of theveins from thelevel aboveand, 10 feet farther along, the faulted continuation of this vein and other lenses inthe hanging-wall. These veins range from 4 to 12 inches in width.

Two, and .in placesthree, stringers of unmineralized quartzranging from 1/2 an inchto 2 inches'in thickness, ex- tend south-easterly for 108 feet backfrom the face of the main adit.

At a point 256 feet south-easterly around the hillside rrom theadit and approximately at the same elevation, an open-cuthas been driven south 40 degreeswest for 12 feet across sediments that strike north 40 degrees west and dip 50 degreessouth-westward.

Fifty feet south-east from this cut a secondone has been driven south 40 degrees west for 7 feet in sediments of a similar attitude.

Small areas of quartz-diorite that may constitute a dyke, outcropsouth-west and north-east of the open cut.

No mineralization was seen in either of the above cuts.

The Stellagroup consists of the Stella NOaja STELLA (9)to -No. 4 mineral claims, staked in 1927 by Chas. H. Foote,and owned byFoote and as- sociates, all of Fraser Lake. The writer examined theproper- ty in July, 1938.

The property is south of Endako, a small settlement 011 the CanadianNational Xailway andhighway, approximately 120 mileswest of PrinceGeorge. It. may bereached from Zndako by following a motor-road,that branches from the main Endako- Prince Georgehighway 'at a point 3.5 miles easterly from Xn- dako,for 3 milessoutherly, and thencealong a logging-truck road westerly for 2 miles to a group of deserted camp-build.- ings at anelevation of 2955 feet;thence a trailleads south-

- 11 - westerly for 6700 feet to the camp-cabin at anelevati.on of 3380 feet.

The workingsconsist of one'adit,an inclined shaft and severalsurface cuts, some of whichnever reached bed-rock. All the workings that reach bed-rock are either on the'top of or on.thesoutherly slope of a low, round-topped,.open-timbered ridge, the crest of whichbegins a quarter of a milesouth- easterly from the camp-cabin and extends for three-quarters of a mile in a direction south 75 degrees west. . The ridge rises to a l-ieight of approximately ZOO feet above the surrounding lowland. The workingsthat do notreach bed-rock are on the crest and southerly slopes of the north of the two knolls that constitutethe westerly end of the ridge.This north knoll is separatedfrom the one to the south by a swamp approximately 250 feetwide; the crest of the knoll is 75 feet above the swamp.

The showingsconsist of scattereddiscontinuous quertz- molybdeniteveins in pink granite.

The veinsrange in str'ikefrom north 70 degrees east to south 80 degreeseast, and in dip, from vertical to 80 degrees southward. They rangein width from 2 to 32 inchesand in lengthfrom a few feet to 8 feet, with theexception of the best showing in the shaft which has an indicated length of 75 feet. Most commonly, theveins possess a ribbontexture, caused by closely spaced films of very fine-grained molybden- ite that parallel the walls of the vein (Plate I A).

The mineralogy of the veins is simple,consisting of fine-grainedmolybdenite and occasionally a little pyrite in vein quartz.

The prevailing rock is a medium-grainedpink granite, that in a fewplaces is cut by lenses of aplite.

The mainshowings lie on the top and southerly slope of a ridgethat extends south-westerly from the camp-cabin for approximately three-quarters of a mile.

At an eievation of 3430 feet an adit has been driven north-westerly into the hillside for 35 feet from a point 3600 feet in a direction south 55 degreeswest from the camp-cabin;the adit is timberednearly to the face andcould not beexamined. The rockconsists of pinkgranite that at theface is cut by numerous closely-spacedfractures, strike east and dip 65 degreessouth. At a place 5 feet back from the face, the rock in the adit-floor is irregularlyfractured

- 12 - PLATE I.

A. Mineralized boulder on Stella molybdenite property, showing typical ribbon-structureof vein, resulting from paper-thin layers of molybdenite in veinquartz. Boulder 3 feet long.

B. Twin peaks of Boss mountain. PLATE 11.

A. Camp of Consolidated Mining and Smelting Company on their Boss mountain molybdenite property; amp at headwaters of Molybdenite Creek.

B. Specimen showing'breociated nature of mineralized fracture- zone, Boss mountain molybdenite propertyof the Consolidated Mining and Smelting Company. and contains a small amount of molybdenite.

No. 1 showing is a cut at an elevation'of 3480 feet an.d 115 feet in a direction north 64 degreeswest from the portal of theadit. This cut has been driven for 15 feet in a direc- tion north 8 degrees east to a lO-J'oot face which has largely sloughed. 9 sample of averagematerial taken from anore pile 5 feetin diameter by 1 footin depth, assayed: Molybdenite, 0.8 percent. This broken vein-matter consists of thin films or ribbons of molybdenitein quartz.

No. 2 showing is anirregular stripping at an elevation of 3480 feet and 30 feet in a direction north 65 degreeswest from No. 1 showing. At theeast end of thestripping, three 2- inch quartz-molybdenite veinle5s strike east and dip 60 de@;rees south. The dump, however, shows pieces of ore that indicate occasional vein-ividths of 6 inches.

No. 3 showing, a trench at anelevation of 3460 feet e.nd 210 feet in a direction south 85 degrees west from No. 2 show- ing, is 20 feetlong in a northerlydirection that exposes only granite in the floor.

No. 4 sho-fling, anirregular stripping that extends 17 feet in an easterly direction and 10 feet to the north is at an ele- vation of 3460 feet and 30 feet westerly from No. 3 showing. The strippingexposes an irregular area of graniteapproxi- mately 6 feet in diameter,that has been cut by numerous quartz stringers and is markedon the north side by a strong 16-inch vertical band of quartz striking north 70 degrees east for 8 feet. The westerlyextension of this band is obscured by overburden and to the east it is terminatedby a vertical 3-inchshear-zone striking north. A small amount of molyb-- deniteoccurs in the quartz of the showing. A sampletaken across a 16-inchwidth of thisquartz assayed: Molybdenite, 0.85 per cent. A 6-footsample taken along the east edge of the area assayed: Molybdenite, 0.6 percen-t. From thesouth edge of the stripping, a trenchextends southerly in overbur- den,and from the north side a trenchextends 14 feet north- erly in granite.

At anelevation of 3400 feet, No. 5 showing, aninclined shaft,has been sunk in a directionsouth 15 degrees east .'or 24 feet, on a slopeangle of 53degrees from a point.320 feet in a direction north 32 degrees west from the portal of No. 1 adit. At thetime of thewriter's examination, (July, 24, 1938) the water level in the incline Gas 17 feet below the collar.

- 13 - The inclinehas been sunk on a lenticular vein of quartz that, above thewater level, ranges from 32 inchesto 24 inches in width on the west wall of the incline and from 2 inches to 4 inchesin width on theeast wall. A sampletaken across 32 inches at a point on the west wall 5 feet from the collar as- sayed:Molybdenite, 1.6 per cent. The vein is conspicuously fractured into slabs ranging from.3 to 6 inches in width by fractures that parallel the walls of the vein. In the hanging- wall the vein is followedby a 2-footzone of granite that is badlybroken by closelyspaced, criss-crossing joints, and, as a result is quitefragmental and badlyoxidized; narrow ir- regular stringers of quartz andmolybdenite traverse this zone. A 2-footsample taken across this zone assayed;Molybdenite, 0.7 per cent.

A trenchextends southerly for 20 feet from the south edge of theincline. For 2 feetfromthe edge of theshaft this trench exposes a fracture-zone that consists of quartz andmolybdenite surrounding numerous granite inclusions; this zone strikes and dips with the main quartz vein of the shaft. A sample of thematerial in this zone assayed:Molybdenite, 1.4per cent. For the remaining 15 feet of it's length,the trenchexposes badly fractured, more or less decomposed, granitethat contains occasional quartz lenses from 1 inch'to 4 incheswide in which a small amount of molybdeniteoccurs. One 10- andone 8-foot long sample, takenalong the wall of thetrench, assayed: Molybdenite, 0.2per cent. and 0.3per cent.respectively.

For a distance of three-quarters of a mile north-easterly and tothe east of the shaft, several trenohes have been dug, but it is reportedthat none of thesereached bed-rock.

No. 6 showing, a 20-foottrench, at an elevation of 3410 feet, is 30 feet in a direction south 65 degreeswest from the shaft. At a place 5 feet fromthe south end of thetrench a 10-inchwidth of' vein-matter is exposed that is probably a con- tinuation of the shaft vein; the full width of this vein was notexposed.

No. 7 showing, is a trench 6 feetlong, at an elevation of 3420 feet, and30 feetsouth'westerly from No. 5. The only exposure in this trench is a 2-footwidth of quartz-molybdenite vein-matter that alsoappears to be a continuation of the'shaft vein. A sanpletaken across the full 2 feetassayed: Molyb- denite, 1.0 percent.

No. 8 showing, is a sloughedtrench that is 30feet south- westerlyfrom No. 6. No ro.ck is exposed inthe trench but it

- 14 - is reported that the vein was foundand a large piece of rock nearby, 3 feet by 2 feetby 18 inches,suggests that the vein was 18 incheswide.

Exposures in thetrenches infer that the shaft-vein e:x- tends westerly for at least 75 feet fromthe shaft. Surface work hasfailed to find any easterly continuation.

Severaltrenches have been dug in the vicinity of qua:rtz- molybdenitefloat which is scattered on a low hill 900 feet north-westerly from the shaft across a swampy depression.

The first of thesetrenches, described as No. 9, lies at an elevation of 3375 feet and is 870 feet in a direction north 88 degreeswest from the shaft. This trench and others, one lying 75 feet westerly from it, and the remainder within a dis- tance of 400 feet north-easterly up the hill and on its sumit (elevation 4310 feet),failed to reach bed-rock, ht the drift, and glacial till, that they cut, consists of occasional sm,%ll boulders ofquartz-molybdenite vein-matter.

At a point that is approximately 700 feetsouth-easte,rly fromthe camp-cabin, a cuthas been driven for 12 feet in a direction north 30 degreeseast into the southerly slope of a knoll on thenorth edge of a smallmuskeg-area. This cut is in coarse-grained,pink granite that contains a few irregular quartzveins which range in width from a knife edge to 6 i:nches.; the borders of these veins are not sharp and the vein-matter containssmall inclusions of the wall rock,but no molybdenite. Some irregular areas of pinkaplite were seen in the surro..md- inggranite.

Severalopen-cuts have been dug on exposures on the south- erly slope or' a hill that liesone-quarter cr'amile southerly from the camp-oabin.

The first of these,described as showing No. 10, lies at an elevation of 3320 feet on the southerly slope of the hill at a point 1800 feet in a direction south.8 degrees east from the camp-cabin.This working,.a pit 5 feetin diameter, and 2 feetdeep, was caved at the time of examination(July 24, 1938), butthe dump showed approximately 100 lbs. of quarte- molybdenitevein-matter, and thematerial indicates that t:he vein must havebeen at least 6 incheswide. The rockformation is pinkgranite.

No. 11 showing is a 10-foottrench at an elevation of 3370 feet and 350 feet in a direction north 70 degrees mes-t from No. 10. The onlyexposure in this trench is part of 2%

- 15 - flat-lying piece of vein-float at the north-westerly end of thetrench. However, the dump shows 150 lbs. of vein-matter consisting of quartz,ribboned by thinmolybdenite seams; vein widths of at least 6 inches are indicated by thedump-material,

Xo. 12 showing is a shallow pit 4 feet in diameter, at an elevation of 3330 feet and 1075 feet in a directionsouth 65 degreeswest from No. 11. it exposespatche's of a len- ticularvein that ranges of an inch to 4 inches in width, on a planesurface or" pinkgranite that strikes east anddips 30 degrees northward.

No. 13 is anirregular stripping 4 feet by 2 feet in dimensions, at anelevation of 3310 feet,and 350 feet in a directionsouth 67 degreeswest from No, 12. It exposespart of a quartz-molybden.itelens that strikes north 25 degreeseast, dips50 degrees north-westward and is 24 inchesthick. A sampleacross the full 24-inchwidth assayed:' Molybdenite, 0.5 percent.

Prospecting to date indicates the presence of a fair grade of molybdenitemineralization. The writersuggests that the shaft-vein be prospected further.

Thismolybdenite property includes 'the MIDAS (11) Nos. 1 to 4 mineralclaims staked in May, 1938, by P. 0. Friske and owned by A. J. Cleeton 'of Cascade.This property was examinedby thewriter in June 1938.

The claims lie in the Trail CreekMining Division to the north-east of the flag-station Tunnel on theKettle Valley Branch of the CanadianPacific Railway. Tunnel is at mileage 50, as measured westerly fromNelson. From Tunnel theproper- ty is reachedby leaving the railway at Mile - 47..5 andpro- ceeding up the relatively open hillside and along the ridge- topin a south-westerlydirection for approximately 2 1/2 . miles.There is no well-defined trail.

The showings areextremely old and the surface work is dl caved. The mainworkings are two adits, at approximately 5000 feetelevation, on the easterly side of a northerly trending ridge and approximately 80 feet below the crest. Thisridge is the top of a spur that extends down to the north betweenBrooklyn and ?up.Creeks. There is alsoan open-cut and cavedshaft on the easterly side of theridge only a few feet below the top at a point approximately 1000 feet to the south of the adits.

The ridge-top in the vicinity of theworkings is quite

- 16 - open,.the timber having been burnt by a large fire about 1S32. The 'slopes on either side are steep andcovered by either talus or a veneerconsisting of talus and soil;the overburden is notdeep.

There are no camp-buildingson the property.

The Miidas molybdenite deposit consists of small amount:s of molybdenitein quartz stringers and in slightly-brecciated syenite. Very. littlemineralized material was found inplace by thewriter. Smallamounts of fluorite,chalcopyrite and more abundantpyrite, and magnetite and hematiteoccur with the molybdenite.

The mostabundant rock on theproperty is syenite. 1.: ' is a medium-grainedrock, somewhat porphyriticin texture, of a definitely-pink colour and consists mostly of pinkpotash feldspar. The syenite is cutby feldspar-porphyry dykes that rangefrom 4 to 8 feet in width, strike easterly and dip 70 de.- greesnorthward; only two suchdykes were seen on theproperty. One narrowandesitic dyke was seen,in the upper adit. This dyke is 18inches wide, dark-green in colour and relatively fresh in generalappearance.

An adit has been driven to the west for 104 feet into the hillside from a point 85 feet below the crest at a point approximately 2 1/2 milessoutherly from mileage 47.5 on t:ae railway. The workinghas been driven north 87 degrees west asan open-cut for 20 feet,then as anadit for 32 feet,then north 66 degrees west for 40 feet, then south 81 degrees west for 25 feet and lastly north 50 degreeswest for 7 feet to the face. At theportal a shafthas been sunk on a 70-degree slope'north-westward, a minimum distance of 10 feet. The shaft was filled with water at the time of the writer's ex- amination(June, 1938). From theopen-cut, the adit follows the south wall of a westerly striking feldspar-porphyry dyke for 72 feet. This dykeranges From 6 to 8 feet in width and dips 70 degreesnorthward., At 32 feet from theportal an 18- inch,andesite dyke strikes north-westerly across the adit, but on reachingthe foot-wall of theporphyry dyke it bends and follows thj.s to a point 40 feet farther in where the adit leavesboth dykes.

A small dump of approximatelyhalf a ton, was seen at the portal, but very little mineralized material could befound inplace. The onlymineralization consisted of'a fewspls.shes of hematiteand magnetite along the contact of the syenite and feldspar-porphyrydyke atthe portal. The shafthas been sunk at this point and it is presumed thatthe molybdenite ont.he

" 17 - dump was found in the shaft and in the vicinity of, if not actually along,the contact. The mineralizedmaterial on the dump consists of blebs of molybdeniteranging from 1/16 to l/Z aninch in diameter,that occur in narrowquartz stringers or slightlybrecciated syenite. Smallamounts of fluorite and chalcopyrite, and in places much pyrite, and mag- netite and hematiteoccur with the molybdenite; of these min- erals,molybdenite is one of theleast abundant. A. s'ample re- presentative of dump material assayed:Molybdenite 2.1 per cent.; Gold, e;Silver, -nil; Copper, 0.1 per cent. A second adit has been driven from a point south 80 de- greeseast from and 40 feet below the first adit. This work- ing hss been driven in a direction south 80 degrees west as anopen-cut for 12 feet,thence in the same direction as an adit for 30 feet, then north 70 degreeswest for 16 feet to the face. A winze fj.lled with water at the time of. the writ- er'sexamination (June, 1938) has beensunk at 30 feet from theportal. From the mouth of the open-cut, a second'qpen- cut has beendriven.ncrth-westerly for 4 feet and westerly for 8 feet to anincline shaft sunk 10 feet on a 60-degreeslope westward.Both theadit and entryopen-cut follow the hanging- wall of a feldspar-porphyrydyke. This dyke strikeswesterly and dips 70 degreesnorthward; it is not the same dyke as the oneexposed inthe upper adit.

The secondopen-cut follows the foot-wall of the dyke. 0ther.thanthe feldspar-porphyry, the rock is pinksyenite. No mineralizedmaterial could be found in place, but about 50 lbs. of molybdenite-bearingmaterial was seen in a small dump. The mineralassociation is similar to that as'described for the upper adit.

fit a pointapproximately 1000 feet to the south along the ridge,an open-cut extends in a directionnorth 10 degrees west for 12 feet to what was apparently a shaft; now entirelycaved. From the shaft a trench extends along the hillside in a direc- tion south 70 degreeswest for 25 feet; this trench is largely caved. Molybdenite and its yellow oxidationproduct, molyb- dite, occurin short stringersin pink syenite within a zone approximately 6 feet wide that strikes north-westerly across the caved shaft. The stringersaverage 1 footin length by 1 inchin'thickness and contain,in addition to molybdenize, abundantmagnetite and hematite. A pickedsample from a small pile of mineralized material at the mouth of'the cut assayed: Nolybdenite 0.3 percent.;'Gold, nil; Silver, nil. Copper, - _I -nil. Thisprospect comprises the MOLYBDENUM, NOS. 1, 2, 3. Molybdenum Nos. 1, 2 and 3 (12) mineralclaimsstaked in 1937 by E. and J. 6. Nessand owned by theestate of thelate €1. B. Thomson. The writer exam- inedthis occurrence in June, 1938.

The property lies westerly up the hillside across McRae Creekfrom Lafferty, a flag-station on the Kettle Valley branch of the CanadianP.acific Railway, 10.5 miles northerly from Cas- cade.

The showings areabout two-thirds of a milewesterly tsy trail from a point 02 theChristina Lake-Paulson road that is 7 1/2 miles northerly from the junction of the Christina LEke road with the main Cascade-Rossland highway.

The occurrencesconsist of scatteredflakes of molybden- ite in quartz-feldspar-biotitegneiss. Some of thegneiss containspegmatitic material consisting of quartzand feld- sparoccurring as a Pine-grainedgraphic intergrowth. There doesnot appear to be any controlling structure for the mol.yb- deniteother than ordinary foliation of thegneiss. Samples takenby the writer assayed from: Molybdenite, 0.04 to 0.8 percent.

The workingsare on a steep, lightly wooded hillside; between elevations of approximately1,000 feet and 1,400 feet above theroad. They consist of two open-cuts, a blasted.area, and an old shaft 10 feet deep.

The lowermostworking is a blastedarea, at the base of a low bluff,that exposes a fresh face of rockmeasuring 8 feet in an easterly direction along the bluff by 4 feet high. Scattered flakes ofmolybdenite occur in a coarsequartz-feld- spar gneiss the foliation of which strikes north 40 degree:; east and dips30 degrees south-eastward. A sampletaken across 3 feet of thebest mineralization assayed: Molybdenite, 0,04 percent.

The next ,-r.rorking is anold shaft that is 125 feet in i). directionnorth 57 degreeseast from the last working. Th.is shafthas been sunk for 10 feet in quartz-biotite schist that strikes north 20 degreeseast and dips 30 degreessouth-east- ward. The schistcontains scattered blebs and finegrains of pyrrhotite along the schistosity but no molybdenite.

Approximately 1000 feet northerly from the shaft a reot- anguiar rock trench extends in a direction north 60 degrees

- 19 - west for 18 feet across quartz-feldspar gneiss that strikes north45 degrees east and dips 35 degrees south-eastward. Molybdenite is scattered in the gneiss; particularly in a zone approximately18 inches wide towards the south-east end of the trench. k sampletaken across this zoneassayed: Molybdenite, 0.8 percent, and a pickedsample from a small dump nearby as'- sayed:Molybdenite, 1.4 per cent.

A short distance to the north along a roundedrock nose the uppermost working has been driven as anopen-cut in an easterly direction for 40 feet on the easterly side of the. rockslope. The rockhere is gneiss similar inkind and at- titudeto that in the last working.Several blebs of finely graphic-quartzin feldspar were seen in this gneiss. Molyb- denite is scarcein the cut. A sampletaken for 10 feetalong thenorth wall of this cut, and anothertaken along a further 30Feet on the same sideboth assayed: Mol.ybdenite, 0.04 per cent.Picked material from the ore-dump assayed:Molybdenite, 0.2 percent.

The Anticlimax molybdenite property, .~NTIcLI~,~(19). north-west of Littlefort,comprises the mineral claims, Anticlimax Nos. -1 to -7 inclusive.

Theseclaims were staked by Nowell Sadlier-Brown as agent, in May, 1939,and are owned byvarious people including C. A. Reidand the Lovevray brothers of Littlefort (Mt. Olie) and by X. S. Brown, L. S. Brown and D. S. McTavish of Kamloops. The BlueJay. Whiskey Jackand Buckhorn claims staked by Reid and the Loveways inApril, 1938,have sincelapsed. The Rroperty was examinedby the writer in August1939.

Subsequent to the staking or" the groundan option was taken on theproperty by D, S. Tait,of Victoria and associ- ates. They did a considerable amount of open-cutting and stripping, but it is understoodthey dropped this option-later in 1939.

The property is approximately17 1/2 milesnorth-west of Littiefort (Ivlt. Olie), a village on the west side of the North Thompson River,60 miles north of Bamloops. A good highway connectsthe village with Kanloops. From Littlefortthe camp may be reached3y following a good motor-road up LemieuxCreek for 9 miles to an abandonedfarm known as Dunshelc's; it is possible to take a car 2 miles farther, but the way is narrow and partly overgrownby bushes. .?ram Dunshek'sthere is a good pack-trail for 8 1/2 miles to the camp at an elevation of approximately 43'75 feet(based onan approximate elevation for Loon Lake of 4150 feet). - 20 - The camp-cabin is approximately a quarter of a mile north-east of the north end of Tin-tl-hoh-tan (Loon) Lake, a small body of water 2 milessoutherly from the east end of Taweel Lake. The cabin is 750 feetnorth-easterly from the north-westcorner-post of pre-emptionLot 3431; (See Kamloops ' Sheet No:. 3)procurable from the Dept. of Lands, Victoria, B. C.; and themain working is 1800 feet north of thecabin.

Tin-tl-hoh-tan Lake, or as it will be called in this re- port, Loon Lake, is on thenorthern extension of theTranquille Plateau. In thevicinity of Loon Lake, theplateau is charac- terizedby low,rounded, well-wooded hills, andintervening lakes, swamps and semi-alpineareas. Rock-outcrops are re- latively scarce and are found chiefly on thetops of hills and in the small canyons cut by the creeks in the edge of the pla- teau where thecreek grade steepens on entering the Thompson RiverValley,

The showings (.see Pig.(1)) are on a low, roundedhill. that rises to a height of approximately 590 feet aboveLoon' Lake. The hill: is densely wooded, butthe overburden is not deep.Outcrogs are numerous on top of the hill, butless fre- quent on theside.

The mineraloccurrences consist of, a pegmatiticquartz lens heavily mineralized with molybdenite and, many narrow quartz veins only slightly mineralized with molybdenite.

The rockformations which contain the mineral occurrences consist of a smallstock of granite and related rhyolite por- phyry. The area of graniteoutcrops measures approximately 2500 feet in a north-westerlydirection, by 1500 feet in a north-easterlydirectior,. This granitestock is bounded on at least three sides, the north-east, south-east and south-went, by areas of greenstone. The absence of outcropsnorth-wester- ly from the stock prevented determination of the rocks on that side. Nearlycontinuous outcrops of greenstoneoccur on a ridge that lies approximately 1000 feet north-easterly from the granite andextends for 1 mile in a north-westerly direc- tion. Scattered outcrops of greenstone occur on the Fourteen- mile Creek slope at points approximately one-half a milesouth- easterlyfrom the stock. Continuous outcrops occur on thetop of a low hill that lies 1 1/2 milessouth-westerly from the stock.

The outcrops of granite on the hill are as shown on Fig.(1). The granite is medium-grainedand almost white .in colour. Under themicroscope this granite is seen to be com- posed essentially of quartz, microperthite and albite-oligo-

- 21 - Fig. 1. Anticlimax molybdenite property: paca, compass and barometer survey. clase. The ratio of potashfeldspar to soda-lime feldspar is a little greater than as 5 to 3 which classifies the rock as granite. Because of thealmost complete absence of dark min- erals and the sodicnature of the plagioclase, this rock could be classed as an alaskite - an alkaline granite with no fenics.

Rhyolj.te porphyry occurs in the areas indicated on Fig. (1). It is a light-colouredrock in which thequartz pheno- crysts, or eyes,are a veryconspicuous feature. Under th'a microscopethe rhyolite porphyry is seen to be composed of phenocrysts of quartz, microperthite and albite-oligoclase from 1 mm. to 2.5 mm. in size set in a groundmass of the same minerals.

The relation of the rhyolite porphyry to the granite was notevident in the field. However, thewriter interprets -the rhyoliteporphyry as a borderphase of thegently-sloping 'but definitely uppersurface of thegranite stock. Definite dyke- like relations to thegranite were not found, an irregular and indefinite contact with the granite is indicated by a 'Tar- iation in texture.of the rhyolite porphyry that is not uni.?orm in anyone direction. This non-uniformvariation may bet:?e result of the intersection of the uneven surface of the ground withthe irregular contact of the rhyoliteporphyry and granite. This contact may tend to conform to the gently-sloping upper surface of thecomposite granite-rhyolite porphyry stock.

One large, andseveral small masses of apliteoccur in thegranite and rhyoliteporphyry. P. large mass in No. 4 pit appears tostrike northerly and dipgently eastward. Within the boundaries of the pit the mass measures50 feet along the exposeddip-length by 15 feet along the strike by 6 feet across the dip. Smallerbodies of aplite occur in the granite to the west of Nos. 11 and 12 workings. In the outcrop these are ore- scentic to triangular-shaped areas that range From 2 inches to 2 feet in maximum dimension.Although they have no continuity the aplitemasses havesharp contacts against the granite. It is probable that the aplite fills.gash-like openings in the granite.

Small irregularpatches of pegmatitemeasuring from a few inchesto 2 feetin diameter, occur in the rhyolite porphyry and aplite of No. 4 pit, and inthe strippings immediately north-east of' thepit. The pegmatitepatches are very poorly defined andmerge intothe surrounding rock. The pegmatite is composed of abundantwatery quartz and lesser amounts of potashfeldspar; in places, as in ?io. 4 pit,molybdenite oc- cursin pegmatite.

- 23 - The granite is massiveand cut by only a fewjoints. The rhyoliteporphyry, on the other hand, is cutby a great number of joints,spaced from 2 to 6 inchesapart, which strike north 73 degreeswest and dip 80 degreesnorth-eastward. The only recognisablefeatures are along the north-east side of No. 4 pit. One of theseconsists only of a paper-thinfracture that follows a joint-plane;the other, is a fractureonly 1/4of an inch in width,that strikes north 30 degrees west and:dips 75 degreessouth-westward; it definitelycuts the first, butthere has been no mea'surable displacement.Apart from the main ore- lens in No. 4 pit, many narrowveins and stringers of quartz andmolybdenite cut the granite to the east of No. 4 pit. Theseveins strike approximately north 25 degreeswest and dip steeplynorth-eastward. They arediscontinuous in length, pinching out to a mere joint within distances ranging from 2 to 20 feet. They representjoints in the granite that have subsequently been filled.mainly by quartz.

The mineral-assemblage is definitely high-temperature and closely related to the formationof pegmatites. Medium- grainedmolybdenite is evenlydisseminated in pegmatitic quartz and feldspar and in watery quartz that is adjacent to pegma- titic areas andundoubtedly pegmatitic itself in origin. Small amounts of molybdeniteoccur elsewhere in narrow quartz veins and stringers that rangefrom 1/2 an inch to 8 inches in thick- ness. In additionto molybdenite, small amcuntsof pyrite, sphalerite and fluoriteoccur in these quartz veins and string- ers. It may benoted that the alkaline nature of theenclosing granite and rhyolite porphyry would presuppose small amounts of fluoritepresent in the accompanyingvein-matter. The molybdenite is most abundant where associated with the pegma- tite and pegmatiticquartz of No. 4 pit, and is much less abun- dant in the nerrowquartz veins and stringers elsewhere on the property. ' .

The mainoccurrence of molybdenite is in No. 4 pit. The mineralizedlens has been largely removed.However, it is re- ported to havecomprised a gently-dippinglens approximately 8 feetin diameter by 2 feetthick. Remnants of thislens as seen on the north-east side of the pit consist of molybdenite replacing aplite along ill-defined planes that strike north 65 degreeswest and dip 25 degreesnorth-eastward. Rearants of the same lensas seen on thesouth-west side, consist of an exposure of molybdenite mineralizationmeasuring 8 feet in lengthby 2 feet in depth by 1 foot in exposedwidth; in this part of the lens the molybdenite is associated with watery quartzand a small amount of feldspar.

Aithoughthe molybdenite of the mineralized lens has sev-

- 24 - era1mineral-associations, it appearsto be most commonly as- sociatedwith pegpatitic quartz and feldspar. It is found re- placing rhyolite porphyry in a fewplaces, more commonly re- placing aplite andmost commonly associated with the watery quartzand feldspar of pegmatiticpatches. In the pegmatite., quartz is much more abundantthan the feldspar, and single hand-specimens of the mineralization wrongly suggest that the molybdenite is associatedwith only quartz. The pegmatitic materialoccurs as irregularpatches., ranging from 6 inches to 2 feetin diameter, andoccurs both in the rhyol.ite porphyry and the aplite.

There is a widevariation in the molybdenite content. A sampletaken from a 10-inchspecimen of high-gradematerial in theore-bin assayed: Molybdenite 10.8 percent.; another samplefrom a 12-inchspecimen of'high grade assayed: Molyb- denite5.8 per cent.

B sampletaken across 2 feet of theremnant of the lens asexposed on the south-west side of the pit assayed: Molyb- denite 1.4 percent. A 10-poundsample approximately repre- sentative of theore in the bin assayed: Molybdenite 1.1 per cent. A sampletaken across 14 inches of aplite and banded. molybdenitein the north-east side of thepit assayed: Mo3.yb- denite 0.4 per cent,.

The workings will be described in sequence as they art: numbered onFig. (1).

No. 1 hasbeen driven as an open-cut for 22 feet in a directionnorth 55 degrees east to an 8-foot,.oaved face. The cut is mostlyin overburden, and exposes only a small amount of rhyolite porphyry at the face.

No. 2 is similar to No. 1.

No. 3 consists of irregularstrippings that expose a little aplite and two patches of pegmatitein rhyolite por- PhYrY.

No. 4 is the cut in which the mineralized lens was found. It is a largeirregular cut measuring 60 feet in a north-vres- terly direction by 10 feet in a north-easterly direction; the face on the north-east and south-east ranges from 2 to 15 feet in height and thesouth-west from 1 foot to 3 feet; the north- west end of the cut is, open.

No. 4 pit exposes a 1.arge body of aplitewithin rhyo:lite porphyry. The aplite is exposed in all butthe easterly, and

- 25 - southerlycorners of the cut and is a body of at least 6 feet in thickness by 53feet exposed dip length; it strikes nor- therly and d.ips gentlyeastward. The molybdenitelens and as- sociated pegmatitic material lie almost wholly within this ap- lite; both are probably genetically related to the aplite.. The easterly,and southerly, corners of thecut consist of rhyoliteporphyry.

A small fault fracture 1/4 of aninch in width,strikes north 30 degrees west anddips 75 degreessouth-westward close to the north-east side of the pit; it cuts the easterly part of themineralized lens but does not displace it. The fault- fracture is unmineralizedand consists only of crushedrock.

All therock, rhyolite porphyry, aplite andmineralized lens are cut by many unmineralized joints,' spaced from 2 to 6 inches apart, andwhich strike north 73 degreeswest and dip 80 degreesnorth-eastward. The assays of samplestaken from the mineralized lens in this pit havebeen described above.

No. 5 is anopen-cut that has beendriven in a direction north57 degrees east for 30 feet. The cut is badlycaved and no rock is exposed.

No. 6 is a strippingthat exposes only rhyolite porphyry.

No. 7 is inoverburden, and sloughinghas covered the rock.

No. 8 is a largetrench, 6 feetwide that extends in a direction north 20 degrees east for 40 feet across jointed rhy- olite porphyry.

No. 9 is a narrowtrench 2 1/2 feet wide that extends 75 feet in a direction north 10 degrees east across jointed rhy- olite porphyry.

No. 10 trench is inoverburden.

No. 11 is anope?-cut that has beendriven in solidrock in a direction north 20 degrees east for 4 feet to a 7-foot rock-face at thebase of a low rock-bluff. The rock is medium- grained granite that contains a small amount of molybdenite and fluorite.

No. 12 i.s a combined stripping and pit;the stripping is 10 feet wide and extends for 20 feet in a direction south 23 degrees east to the edge of the pit LO feet square by 6 feet deep. The pitexposes a 1-inchquartz-molybdenite stringer

- 26 - along the north-east wall. Glacialfluting md striae are well defined in the smooth rock-surface of the stripping; the direction of glacier-movementas indicated by fluting and striae is south 23 degreeseast. This direction cor- responds very closely with,the alignment of ore-float in the boulder-train(Fig. (1)).

No. 13 is a shallowpit 2 feetdeep that measures 8 feet in a northerly and 4 feetin an easterlydirection. It ex- poses a short, 1/2 inchstringer in granite; the stringer con- tainsquartz, pyrite, fluorite and a little molybdenite.

No. 14 is anirregular pit in granite. The pit is 2 feet deepand measures 10 feet in an easterly and 4 feet in a nor- therlydirection. A few stringers of quartz, 1 inchwide, follow north-westerlystriking joints. h smallmount of sphalerite,but no molybdenite, was seen in the quartz.

No. 15 is a pit 4 feetdeep and 4 feet square on a quartzvein, 8 to 10 incheswide, that strikes north 13 de- greeswest and dips 85 degreessouth-westward. This vein con- tainsonly a little molybdenite. A fewsmall stringers of quartz,pyrite and sphalerite also cut the granite.

No. 16 is a stripping 26 feetlong that extends south- easterly to the edge of a large area of granite. The strip,- pingfollows a discontinuous,lenticular quartz vein that rangesfrom 1 inchto 8 inchesin thickness. The vein-matt,zr consists of quartz,pyrite an.d a little molybdenite,sphaler- ite and fluorite.. The rockin the stripping, andadjacent outcropsouth-easterly, is all graniteexcept for anisolated dyke-like body of rhyolite porphyry at the south-easterly end of the outcrop. This dyke is 4 feet wideand strikes east.

F.urtherprospecting, if done,should either (1) fcl1o.w a possiblerepetition of themineralized-lens BS in ?To. 4, either down the dip or alongthe strike, or (2) be in the na- ture of exaTination of all float around the periphery of the stock. A repetition of structuresimilar to,that in No. 4 pit is possibleand the presence of otherlenses might be shown by min.eralized-boulders in the float. The source of any float could be determined in a similar manner to that of the No. 4 occurrence,as is describedin the following para- graph.

Mineralin place in No, 4 pit was made by following a dis- covery of molybdenite float to its origin. The float was found on a wooded hillside, so well covered by overburden that pros- pectingconsisted of searching the glacial-till for mineralized bouldersand digging several cross-trenches. The discovery of float was made in the vicinity of trench No. 10 see Fig. (1) and trenches Nos. 10 to 5 inclusivewere dug before the outcrop of molybdenite was found in No. 4 pit. Most of this floathas been distributed by glacialaction. This is shown by theparallelism (see Pig. (1)) between thealignment of the various positionsin which the mineralized-boulders were found, that is, thealignment of theboulder-train, and of gla- cialfluting and striae on outcrops on top of the hill. The direction of the boulder-train as mapped is south 30 degrees east,and that of the fluting and striae is south 23 degrees east;the indicated direction of movement of the ice is from north-west to south-east.

Ground formerly comprising the Ken- KENALLAN MOLYBDENITE allan property has beenrecently PROPERTY (21) re-staked as a group that includes themineral claims Numbers 1 to 6, inclusive, and the Oak Fractional.These were staked in A:- gust andSeptember, 1939 by R. and P.L. Fitzmaurice,Otto Sand bergand P. W. Groves.This property was examinedby the writer in August,1939.

The property lies approximately 4 milessouth-west of Westwold, formerly known as Grande Prairie, a village 35 miles east of Kamloops on the Ramloops-Vernonhlghway. The property may be reached by following the Westwold-DouglasLake highway for 4 milessoutherly from Westwold, thence by anold logging- road for 1 1/4 milesnorth-westerly to the property; the logging- road is passable by car for 3/4 of a mile fro!n the highway.

The workingsare on the long top and northernslope of an openly-wooded,round-topped hill, the maximum height of which is approximately 300 feetabove the end of the, passable section of the logging-road.

The Kenallan is a high-temperaturereplacement deposit in which me original lime and argillaceous sediments have been replaced by lime-silicateminerals and by molybdenite. The molybdeniteoccurs as a minor constituent in beds of lime-sili- caterock. These beds of lime-silicaterock occur in two nor- therlystriking zones. The westerly zone is exposed by sur- facecuts Numbers 1 to 15 inclusive, and by a shortincline on thecrest of theridge. The easteriy zone is exposed by an in- cline and a verticalshaft, wo'rkings Numbers 17and 18, on the easternslope of theridge. The length of thewesterly zone as exposed by workings, is 1,000 feet, and althoughthe maxi- mum width of the zone is 100 feet, the width of theindividual lime-silicate bedsranges from only a fewinches to 4 feet.

- 28 - The length of the easterly zone, as exposedby the incline and vertical shaft, is 150 feet and the maximum width 12 fest; this is also the width of the lime-silicate bed.

Molybdenite occurs almost exclusively within the lime- silicatebeds. It is widelyscattered and is nowhere conce:n- tratedinto areas of heavymineralization. The bestmaterial found is that whichcomprises the dump for No. 6 working, a combinedunderhand. stope and short incline from the bottom of thestope. A 250-lb.sample representative of the dump mater- ial, taken by thewriter assayed: Molybdenite, 0.5 percent.; copper;trace; iron, 1.9 percent.

The rocks associated with the lime-silicate rock' are inter- bedded crystallinelimestone and hornfels. The bedsrange in strike from north 15 degrees west to north 10 degrees east and indip from 40 degrees to 50degrees westward. The lime-sili- caterock and thelimestone range in thickness from a fe7.f in- ches to 4 feet. The entirewidth of thehornfels was seldom exposed,but widths up to 12 feet' havebeen seen.

The lime-silicaterock is a dense,predominantly light- green rock that contains the following minerals listed in or- der of abundance:diopside, lime-garnet, epidote, wollaston- ite and axinite.

The hornfels is a veryfine-grained, dark-green rock, thathas a slightlybrownish hue. It consists of a mosaic of quartzand small amounts of feldspar and biotite.

The limestone is a medium-grained,white rook consisting almostexclusively of calcite.

Towards the north end of the westerly zone,and particu- larly in the easterly zone, the rocks are cut by diorite sills andtongues. This diorite is a medium-grained rock, c0ntai.n- ingfeldspar and amphibole. The presence of patches of lime- silicate minerals and 'molybdenite, indicate that although tihe diorite hasintruded thesediments, its intrusion definite1.y precededthe replacement of theserocks by lime-silicates and molybdenite. The mineralizingsolutions, however, probably came fromareas of granite,rather than from thediorite. An area of graniteoutcrops 150 feetnorth-westerly from No. 1.5 pit.

Beginning at a point 150 feetnorth-westerly f'rom No. 15 pit, an area of graniteapproximately 50 feetwide, extend8 for 200 feetto the north-west. This granite contains c1oi;s of pegmatiticmaterial and on thenorth-westerly end a lens of

- 29 - quartz-feldsparpegmatite, measuring 10 feet in a northerly ..I clirectionand 3 feet in aneasterly direction. The'granite is medium in grain and varies with the orthoclase content fromgrey to pinkin colour. The compositionranges from that of granodiorite.to that of a truegranite. This area of granite is boundedby hornfels and crystallinelimestone.

The surfaceworkings will bedescribed consecutively, beginningfrom the southernmost trench on the top of the ridge andproceeding northerly.

No. 1 is a trench 4 feetwide and 4 feet deep that has beendriven in a northerlydirection for 12 feet. The rocks strikenorth and dipwestward. One foot of greylime-silicate rock lies in a foot-wall of hornfels. .No molybdenite was seen.

No. 2, a shallowstripping 4 feetwide by 2 feet deep, by 10 feet long in a northerlydirection, is 90 feet in a direc- tionnorth 7 degreeseast. from No. 1. As contrastedto No, 1, the lime-silicate rock lies in the hanging-wall of rusty horn- fels. The rocksstrike north 15 degrees west and dip 35 de- greeswestward. No molybdenite was seen.

No. 3, a trench 8 feetlong in a northerlydirection by 7 feet wide ty 3 feetdeep, is 45 feet in a direction north 2 degreeswest from No. 2. It cutsthe following section of rock: 4 feet of limestonein the hanging-wall, then 3 feetof lime- silicaterock, then 2 feet of rustyhornfels. No molybdenite was seen.

No. 4, a trenchdriven 28 feet westerly across the strike ofthe rocks to a &footface, is 75 feet in a direction north 5 degreewest from No. 3. The trenchexposes 3 lL2 feet of limestone on thehanging-wall, and 3 feet of greenlime-silicate rockin tne foot-wall, some ofwhich contains abundant fine,- grainedepidote, and then 6 feet of hornfels. A small amount of molybdeniteand chalcopyrite were seen admixed with dark- brown crystalline garnet.

No. 5,an irregular pit 5 feet deepmeasuring 25 feetin a northerly direction and15 feet in a westerly direction, is 60 feetin a directionnorth i0 degreeswest from No. 4. The same succession of rocksoccurs as in No. 4. In thispit the limestonebed is decidedlylenticular. A small amount of pur- ple axinite was seenin the lime-silicate. The only molybden- ite seen was in a small dump at the side of this pit.

No. 6, anopen-cut driven 20 feetwesterly, is 60 feet in a directionnorth 10 degreeswest from No. 5. From the

- 30 - westend of this cut a drift-workingextends 25 feetsouther- ly, and from thefloor of thisdrift-working, an underhand- stopeextends down thedip of thesediments for 15 feet. The stope is in a 42-inchband of lime-silicaterock, with 4 feet of limestonein the hanging-wall and hornfels in the foot-wall. Theserocks strike north 15 degrees west and dip40 degrees westward.

Only a little molybdenite was seen in the present faces, but a considerable amountof molybdenite-bearingrock estimated at approximately100 tons has been taken from the drift-working and incline,as indicated by a nearby dump.

The writer sampl.ed this dump by taking representative pieces of ore from variousplaces on and inthe dump. A 250- pound sample of this material was sent to the Department of MinesSampling Plant at PrinceRupert for crushing and reduc- tion. The sampleassayed: Molybdenite, 0.5 per cent.; copper, trace; iron, 1.9 per cent.

No. 7, a strippingthat follows the same lime-silicate bed as the drift in No. 6 working,but here the beds strike north, is 60 feet in a direction north 60 degreeswest from west end of theopen-cut at No. 6. Eightfeetwesterly from No. 7 a. second strippingexposes a lime-silicate bed 4 feet thick. The sucoessionof rocks to the east of this stripping is; lime- stone, 2 feet;lime-silicate rock, 4 feet;limestone, 2 .feft; lime-silicate, 3 feet;hornfels. A small amount of molybden- ite was seen.

No. E, a trench 4 feetdeep measuring 35 feet in a nor- therlydirection and 5 feetin width, is 70 feetnortherly from No. 7. This trenchappears to be inthe western.bed cf lime-silicatethat extends from Wo. 7; 3 feet of limestone overliesthe lime-silicate. The beds strikenorth 10 degrees east and dip 45 degreeswestward. A slight bend tothe east seems to have occurred in the rocks between No. 7 and No. E. Only a small amount of molybdenite was seen.

No. 9, a pit 8 feetdeep and 4 feetin diameter, is 90 feetin a directionnorth 60 degreeseast from No. E. The rocks in this pit strike north 10 degrees west, and dip50 de- greeswestward; they are bounded on the south by a vertical fault that strikesnorth 60 degreeseast. The continuation. of thelime-silicate beds northerly from No. 8, appearsto be offset in aneasterly direction towards the position of No. 9 pit. The succession of rocksin No. 9 from westto east is: lime-silicaterock, 2 feet;hornfels, 2 feet;'diorite sill, 14inches; hornfels, 3 feet.

- 31 - No. 10, a trench 3 feetdeep, measuring 15 feet in an easterly direction and 4 feet in width, is 40 feet in a direc- tionnorth 30 degreeswest from No. 9. A smallpatch of horn- fels is exposed inthe western end.

?To. 11, a pit 3 feetdeep and 6 feetin diameter, is 70 feetin a directionnorth 40 degrees east from No. 10. From westto east it exposes 1 foot of limestone, 3 feet of lime- silicate rock and then hornfels.

No. 12, a pi-t 2 feetdeep and 5 feetin diameter, is 100 feetnorthward from No. 11. Prom westto east the succession is: 2 feet of lime-silicaterock;. 12 .feet of limestone;and 3 feet of lime-silicaterock. Wollastonite was seenin this pit.

No. 13, a pit 4 feetdeep and 5 fee.tsquare, is 175feet in a directionnorth 5 degreeseast from No. 12. The rocks strikenorth 4 degreeseast and dip 45 degreeswestward. From westto east the succession is: 6 inches of lime-silicate; 12 inches of diorite; 5 feet oflime-silicate rock; and thenhorn- fels. Although thediorite is definitelyintrusive into the associatedrocks, it hasbeen in partreplaced by lime-sili- cates md by molybdenite.

No. 14, a pit 2 feetdeep and 5 feet in diameter, is 40 feet in a directionnorth 25 degreeseast from No. 13. The rocksare similar to those in No. 13,

No.: 15, a trenchthat extends 10 feetsouth-westerly, is 50 feetnortherly from No. 14.This trench^ cutsacross 2 feet of diorite. 3 feet of hornfelsand.some lime-silicate in the foot --Mal 1.

Ingeneral, workings No. 1 to 15 inclusive,follow one westerlyzone, of lime-silicatebeds. However, thiswesterly zonecan be sub-divided into possibly five separate lime- silicatebeds; onebed is exposedby Nos. 1 to 7 inclusive, a second by Mos. 7 and %,a third' by Nos. 9 and 10, a fourth by Nos. 11 and 12, and a fourthand fifth by Nos. 13to 16 in- clusive. The maximum width of the zone of lime-silicatebeds is 100 feet; but theindividual beds range from only a few inchesto 4 fee.t.

No. 16, a trench15 feet long in an easterly direction, is 360 feet .in a direction north 42 degreeswest from Fo. 15. It extends across the northern end of a pegmatitelens 10 feet longby 3 feetwide; the pegmatite contains only quartz and pink feldspar.

- 32 - No. 17, an incline sunk on a 40-degreeslope in a wes- terly direction for 9 feet, is 400 feet in a directionnorth 85degrees east from No. 15.This incline measures 12 fee.1; in a northerlyd.icection and extends as an irregular stripping for 50 'feetto the south. The rocksin this inclineconsist of hornfelsand cro.ss-cutting tongues of diorite: only a few patches of lime-silicate rock and a little molybdenitewere seen.

No. 18, a shaft, 12 feet in diameterthat is 'now filled withwater and inaccessible, is 150feet northward from No.. 17. It hasbeen sunk entirely in lime-silicaterock. Only sma1.l amounts of molybdenitewere seen.

The SandsCreek molybdenite Occurrence SANDS CREEK and adjacentground appears to be cov- MOLYBDENITE (24). ered by the No.. 1 and No. 2 Sands Creek- Molybdenum claimsstaked on April 21, 1939and owned by Gordon and I. A. Bennett of' Clearwater, and, by the Morning Starclaim, staked on December 30, 1939and owned by J. L..Carden. The writer examined thisoccurrence in June, ' 1938.

The occurrence is a small showing of molybdenitethat occursin the south bank of SandsCreek: a smallcreek tha-t flowswesterly into the Clearwater River and crosses the Clear- waterroad at a pointabout 1 1/2 milesback or to the north of the mainNorth Thompson highway near Clearwater Station, (CanadianNational Railway) about 76.miles north of Kam1oo:ps. The showings are 700 feet down-stream from the roadcrossiing. This propertyhas been briefly described by Walker in the Sum- mary Report,Geological Survey of Canada, 1930, Part A, p. 153-A.

The workingsconsist of a little blasting on three qwrtz lensesin the bank of thecreek. Two of theseare close to the top of the 30-foot bankand the third is halfway down the bank at the base of a 15-footrock bluff that extends down from theupper showings.

The uppermostshowing is a lens of barrenquartz, 6 feet long by 18 inches thick in its thickest part, that strikes ~ north 70 degrees east and dips 7 degrees southward.

At about the same level in the bankand 20 feet easterly, a &footzone of quartzstringers cuts aplitic granite. These stringers,strike north 70 degreeseast and dip 6.0 degrees southwardand carry a small amount of molybdenite. A sample takenacross the zoneassayed: Molybdenite, 0.1 per cent.

- 33 - A short distance beloiv the quartz lens first described, a thirdshwing containing a small amount of molybdenite,ex- tendsdiagonally north-easterly down the bank of the creek for approximately 20 feet.This quartz strikes north 50 de- greeseast and dips 80 degreessouthward, and ranges in width from 3 inchesto 8 inches. A sampletaken across 6 inches of vein-matternear the upper end assayed:Molybdenite, 0.3,: percent, andone consisting of selecteddump-material as- sayed:Molybdenite, 0.78 per cent. This occurrence is in coarse-grainedgranite similar to that of the secondshowing.

The Boss MountainMolybdenite prop- BOSS MOUNTAIX (25).erty on Boss Mountain(Big Timothy Mt. ), in the Quesnel Mining Division, includesthe Crown-grantedmineral claims, Tooty Fruity, %- aldine,Black, -, Adanac,Bonnie, Adanac No. 2, Tip Top, Adanac Fraction and Adanac No. 1; theseclaims were located at various times between1928 and 1935, and are at present owned by theConsolidated Mining and Smelting Company of Can- ada, Limited of Tadanac, British Columbia. The propertywas examined by thewriter in July, 1937.

Boss Mountain(Big Timothy Mt.) (Plate I B) atlongitude 120degrees 56 minutesand latitude 52 degrees 06 minutesnorth, liesapproximately 45 miles north-east of Lac la Hache.

The Boss Mountain area may bereached by at least three different routes, but the best is by 25 miles of poormotor- road,passable by carswith good clearance,from Lac la Hache (elevation 2,650 feet) on the Cariboo Highway, to the Eagle LakeRanch on the western end of Murphy (Eagle) Lake, (ele- vation2,875 feet), thence by pack-horse trail for approxi- mately20 miles to the pass over Boss Mountain, at aneleva- tion of 6,750feet, and down to the camp-cabin a; an elevation of 5,550feet on thesouth-easterly side of the maintain. The camp-cabin is on the northern bank of the eastern headwater tributary of MolybdeniteCreek. This tributary flows to the north into McKinleyCreek andthence into the Horsefly River.

The two otherroutes are (1) via a pack-horse trail that leads from Vaughan'sranch (Pre-emption Lot No. 104 on Quesnel Sheet, Map No. 3-G, procurable at Dept. of Lands,Victoria), now abandoned, 8 milesalong the road to the north from Lac la Hache, north-easterlypast the east end of SpoutLake, by Geo. Borthivick'sranch (Pre-emption Lot No. 9105 onQuesnel Sheet) on the east end of Murphy (Eagle)Lake, thence north-easterly to the property, and (2) by pack-horse trail to the north from Forest Grove, a village9.miles east' of Canim'Lake, to Geo. Borthwick'sranch (Pre-emption Lot No, 9105 onQuesnel Sheet),

- 34 - thencenorth-easterly to theproperty. Hunting parties have approached Boss Mountainalong a route that follows Boss Creek directly to the north fromthe west end of Canim Lake; this route is possibly better than the others because of its shorterlength and thereported absence of swamps. As yet, no well-definedpack-trai-1 has been built.

The showings are onboth sides of a small creekflowing easterlyinto Molybdenite Creek. The southside of thecreek- valley rises steeply from the creek bankand is covered by drift and a densegrowth of timber; 600 feet above the creek the slope eases and thedense timber gives way to more alpine countryconsisting of grassyslopes and rock-exposure's. The workingson this side of thecreek extend from an elevation of 5,600 feet near the creek to an elevation of 6,100 feet. The north side of the creek-valley slopes gently back for 1/4 of a milebefore it beginsto steepen; the workings on this sideare in the creek banks, on thisgently-sloping groundand on a small area of flat groundon thesouth side. The accom- panyingsketch (Fig. Z), shows theirdistribution. South-wes- terly fr'om the workings the creek heads in a precipitiously- walledcirque. From its base at a pointabout 1;OOO feet up- streamfrom the cabin the cirque rises steeply for approxim- ately 1,100 feet to the gentle slopes of theupland area.

The molybdenitedeposit consists of (1) quartzveins mineralized by molybdenite, and (2) a circulararea of fra.c- tured quartz diorite mineralized by quartz andmolybdenite.

The rock in the vicinity of the showings is quartz-di.- orite that forms part of a iarge batholith of granitic roc:ks that is about 30 milesin diameter. The showings areapprox- imately 5 miles from the eastern contact of the batholith with a north-westerly trending belt o.f older greenstones nearly 5 milesin width. Olivinebasalt andagglomerate of Tertiary or post-Tertiaryage cap the two summits of Boss Mountainwhj,ch lie roughly 1 1/2 miles north-easterly from the molybdenite showings.

At various places, 'particularly in the vicinity of the CreekShowings (Pig. 3), thequartz-diorite contains light- greyinclusions of feldspathizedrock, These feldspathic in- clusionspossess a typicalsugary, hornfels texture indice.tive of re-crystallization of the original rock, presumably a green- stone, by thecontact action of theenclosing quartz-diori,te.

The rocks on theproperty, other than quartz-diorite, in- cludeaplite, pegmatite, quartz-porphyry and lamprophyre. Two outcrops of fine-grained,sugary aplite were seen, which aon-

35 - I / I I I / i 4 / / Wooded Flat / / stitute parts of a dykeapproximately 3 feetwide in showir:g No. 18 (Fig. 2). Pegmatiteshave been reported from the hill- sidelying north-westerly from the camp-cabin,but on theeouth- easterly side and in the CreekShowings the writer was able: to findonly small pegmatite veinlets of pinkorthoclase and q,uartz. Oneyquarter of a miledorm-strem from the CreekShowings, a 4- foot dyke of quartz-porphyry,striking south-easterly and dipping 40 degreessouth-westward, occurs on thesouth side of theCreek.

Parts of a dark-green,lamprophyre dyke, consisting of hornblerideand biotite were seen on the south-easterly hill- side; it extendsto the south-east of showing No. 22 up the hill to ?To. 31,and for most of the distance on thenorth-east wall of a quartz vein; the maximum widthobserved was 5 feet. Although the patchy distribution of the dyke as seen in the cutsalong the strike, suggests that the lamprophyre occurL: as inclusionsin the quartz-diorite, the presence of off-shoots of the lamprophyrefrom the mainmass into the quartz-diori.te points to a somewhat laterage. It is suggestedthat (1) the dyke may havebeen emplaced at a late stage in the crystal1.i- za.tion and intrusion of the batholith, and at a time before all movement of the magma had ceased, or that (2) thedyke may have filled gash-fractures in the quartz-diorite after all crystal- lization had ceased and the mass had become solid.

The molybdeniteoccurrences on the property belong to two closely-alliedstructural types. One typeconsists of quartz veins that fill tension-fractures and the other a quartz-di- orite breccia cementedby quartz and molybdenite; molybdenj.te occurs in both types.

The quartz veins are variable in width and discontinuous alongthe strike. In width they range from a knife-edge to 2 1/2 feet and in length from 3 to 56 feet; this last figure representsthe longest continuously-exposed section of anyone veinseen. It is possiblethat disconnected exposures aligned betweenshowings ?lo. 23 and 32 (Fig.2) over a length of 250 feet,represent parts of the same vein. The greater number of the veinsrange in strike from north 70 degrees west to north 50 degrees west, the latter strike being the prevalent one, and range in dip from 25 degreesto 80 degreessouth- westward. The exposures and probably by farthe greater num- ber of veins,occur within a belt 150 feet in width that trends to the south-east up the hillside for approximately 2,000 feet from the camp-cabin (Fig. 2).

In most of the veins, massive quartz is the main vein-. filling. However, in some veins,particularly along their borders,angular inclusions of wallrock are abundant; these

- 37 - LEGEND Massive quartz diorite c? Area in quartz diorite, marked by an abundance of basic inclusions Area of abundant molybdenite in brecciated quartz diorite Base of rockface cut -

Top of creek bank 7rr,.N: ,,‘V Fault, marked by gouge,

crushed rockore and ?Ivv\IyvL Joints in dioritequartz @A

Scale 20 40 ”_ Feet

Sample No. Width % MoSZ Description. I Grab 2.7 Good gradebreccia from ore dump 2 56” 3.0 Acrossseams of MoS, andquart3 3 56“ 3-4 Solidbreccia 3.4 seams of MoS, and yellow oxide 4 30” 3.5 In north portion of fault 30ne, abundant MoS2 and yellow oxide 5 72” 2.0 Crushedfault 30ne material, rock, MoS2 andyellow oxide 6 70” 2.4 Acrosssolid breccia, minerali3ed by MoS,

Fig. 3. Consolidated Mining and Smelting Company molybienite property, Boss Xountain. Detail of creek showings. Tape, compass survey.. inclusionsare mostly quartz-diorite,but in areas where law prophyredykes occur they may be fragments of the dyke. A ribbon-texturein the vein-quartz occurs in parts of showing No. 25; this texture is characterised by thin films of fine- grained molybdenite in parallel fissures that themselves paral- lel.the' strike of thevein. The zones of suchribbon-texture are discontinuous along the strike andprobably represent an incipient parallel fracturing of the vein rather than marked shearing within it.

Quartz-diorite,conspicuously brecciated and the frag- ments sealedby quartz and abundant molybdenite, (Plate I1 8) occurs within an area 20 feet in dianeter in the Creek Show- ings(Fig. 3). The brecciationextends north-westerly and south-westerly for a distance,as exposed intrenches, of 350 feet, but the intensity of the brecciation is much decreased and the amount of mol.ybdenitesmall. The breociafragments are very angular in outlineand range from l/2 an inch to 6 inches in maximum dimensions.

The area of intense brecciation presumably forms the centralpart of anore-chimney or breccia-pipe. It would, therefore,be expected to extend farther vertically than hor- izontally. Where no structuralreason is evident,the char- acteristic fracturing of a breccia-pipe is considered to have resulted from the explosion of watervapour and other vapours collecting at certainpoints under increasing pressure during thecooling and crystallization of a batholith.Breccia-pipes have been widely discussed in literature, the most recent des- criptionsbeing those by Mons (1935,1938) and Perry (1933) (seeBibliography at end of Bulletin).

The filling of both the veins and the breccia is chiefly quartz.Molybdenite occurs in varying amounts from traces to as much as 3.5per cent., as shown by the accompanying assays. The molybdenite commonly occurs 8s films of bladesarranged normal to the walls of a vein or to the outlines of included rock-fragments;the films rangefrom 1/32 to 112 aninch in width;less commonly it occurs as thin ribbons'of very fine- grainedmolybdenite imparting a ribbon-textureto the vein, as in showing No. 25. The canary-yellowoxidation product, the hydratedferric molybdate, molybdite, is common on thesurface of theveins or in theshear-zones of the Creek Showing. A small amount of chalcopyrite and pyriteoccurs in both the veins and the breccia.Occasional crystals of pink orthoclase, rangingfrom l/S to 1/2 an inch in size occur in both the veins and breccia; these are always associated with the molybdenite either on theborders of theveins or surroundingrock-frag- ments,indicating that they formed earlyin the sequence of

- 39 - mineralization. The mineral relations suggest that a consid- erable amount of vein-quartz formed subsequentlyto the de- position of both theorthoclase andmolybdenite: The occur- rence of smallamounts of 'orthoclasesuggests the close af- finity of the vein-matter in both the quartz veins and breccia topegmatites, and its formationrepresents a stagein separ- ation of volatiles from the magma chamber immediatelysucceed- ingthe pegmatite stage.

Fracturing of the quartz-diorite may begrouped accord- ing to the way it hasallowed for the emplacement of (1) aplite infractures of two directions,north snd north-easterly; (2) a lamprophyredyke in a nortin-westerlystriking fracturef (3) thequartz as veins in discontinuous fractures striking pre- dominantlynorth-westerly and dippingsouth-westward; (4) quartz as cementingmaterial for thebrecciated quartz-diorite of the Creek Showing. In these pre-mineralfractures there hasbeen no shearing, and this condition, combined with the characteristicbrecciation of thewall rock, indicates that thepre-mineral fractures are simple tension-fractures, as op- posed to the shears.

The post-mineralfaults or shearsare characterised by abundantcrushed rock and gouge, which is evidence of a con- siderable amount of shearingwithin the fracture-zones.' Faults or shears are not common in the vicinity of the quartz veins. Two small faults were seen in the adit or showing No: 10 fig^ 2). Post-mineralshearing has been intense in the brec- cia of the CreekShowing. Most of theshearing is confined to two east-westerlystriking zones of crushedrock and gouge rangingfrom 1 foot to 4 feetin width. A widefault-zone striking north 60 degrees east and 5 feet in width, .cuts the quartz-diorite on thesouth-eastern side of thecreek approx- imately 250 feetup-stream from the Creek Showing (?ig. 3).

The first record of molybdenite on Boss(Big Timothy) Mountain is in the Annual XeportMin.ister of Mines, British Columbia, for 1917, p. 134,which states,

"During1917 exposures of molybdenitewere discovered by Ryan and claims were staked covering them."

Duringthe. following year development work was done by Ryan andHamilton. Apparently little was donebetween then and 1930, when the property was bondedby theConsolidated Mining andSmelting Company and a considerable amount of workdone on thetrail. Since then farther surface exploration has beencarried on by this company.

- 40 - The workings on theproperty comprise numerous open-cuts and strippings andone short adit; their distribution is shown on Pig. (2). Caved cuts, or those showing no rock,are not shown on Fig. (2). The workings will bedescribed in two groups, one, those up the hillside south-easter1.y 'from'the camp-cabin and those on the banks of the creek north-easter,ly down-stream from thecabin, known as the CreekShowing.

No: 1 cuthas been driven south 55 degreeseast for 20 feetthrough disintegrated quartz-diorite. Two lenses of quartzare exposed, one, on thesouth-westerly wall, that measures 1 foot'by 3 feet, andthe other in the back at the facemeasuring. a few inchesby 3 feet. None of these show any molybdenite, althoughfragments of quartzcontaining molyb- denite wereseen on the dump.

No.. 2 is a shallow cut that has beendriven south 75 de- greeseast for 12 feetthrough quartz-diorite. The cutexposes a relatively flat quartz vein on the north wall, that ranges from 2 to 3 inchesin thickness, and contains a thinsheet of molybdenite oc both walls.

No. 3 cuthas been driven south 55 degreeseast for 16 feet. From 10 feet to the face, a lenticularvein of quartz mineralized with a small amount of molybdenite on the north- easterlywall, outcrops in the floor'; this vein is vertical md rangesfrom 8 inches in width at the floor to 18 inches at the top of thecut. The rock on thewest wall of thevein is quartz-diorite and on theeast wall. it is part of a green- stoneinclusion.

No. 4 is a strippingthat has been driven south 65 degrees east for 20 feet. The floor on the southern endexposes a curving quartzlens 5 feet long by a few inches wide that pinchesout on both Ads. It strikessouth-easterly and dips 45 degreessouth-westward'; and contains 9. little molybdenite on the hanging-wall.

No. 5 is anirregular stripping approximately 10 feet in diameterthat exposes an area of quartz-diorite inclusions in vein-quartz, 5 feet in diameter, and on thewest wall a 2-imch stringer of quartz that has a ribbon of molybdenite 1,/2 aninch wide on bothwalls over a length of 2 feet. The molybdenit? crystals are conspicuously normal to the walls of the stringer.

No. 6 is a squarestripping approximately 10 feet on the side'that exposes an area of brecciated quartz-diorite seahd and cut by vein-quartz;the two main quartzlenses of this show- ingstrike north-westerly and north-easterly. Only onesmall '

- 41 - film of molybdenite was seen in this material.

No;. 7 is a trench that has been driven north 15 degrees eastfor 60 feet in quartz-diorite. Twelve feet from the northern end a barren quartz vein outcrop strikes north 55 degreeswest and dips 25 degreessouth-westward.

No. 8 is a smallsidehill cut that exposes a lens of quartz 3 feet thick by 4 feetlong, striking north 15 degre.es west and dipping50 degrees south-westward; the lens contains only a little molybdenite.

No. 9 is a sidehillstripping with its longaxis strik- ingsouth 45 degreeseast for a length of 21 feet. A strong but barren quartz vein 12 incheswide, exposed on the north- easterlyside of thestripping, strikes north 70 degreeswest andd.ips 10 degreessouth-westward. Westerly from this vein there are two.smal1 areas of brecciated quartz-diorite sealed by quartz,but containing no molybdenite.

No. 10 working is a combined open-cutand short adit. The open-cuthas been driven south 10 degreeswest for 15 feet, andsouth 40 degrees west for 14 feet to the portal of the adit; the adit has been driven south 40 degreeswest for 14 feet to theface. For 7 feetout from the portal of theadit the open- outintersects a zoneof quartz-veins. This zonecontains threequartz-veins, striking north 50 degrees west and dipping 20 degreessouth-westward, that range'from 2 to 12 inchesin width;several smaller parallel stringers occur between these mainveins. Discontinuous fringes of molybdeniteoccur on the walls of thesequartz-veins. Occasional narrow veins or crushed rockindicate that there hasbeen a slight post-mineral move- ment along the veins. A flat fault near the face of the adit has displaced theveins 3 feet to the west.

No. 11 working is anold shaft 5 feetwide by 8 feetdeep. Close to the bottom in the north-westerly wall of this shaft there is a lens of barrenquartz, 8 feetlong by 2 feetthick, striking north 40 degrees west and dipping 30 degrees south- westward. The south'wall of theshaft is marked by closely- spacedjoints in the quartz-diorite that strike north-easterly and dip 80 degrees. south-eastward.

No. 12 is a cutthat has been driven south 50 degrees 'east for 11 feet. The faceof the cut exposes a quartzlens 28 inches thick which strikes north 50 degrees west and dips 55 degreessouth-westward. The lenscontains a'few small frag- ments of quartz-diorite in thehanging-wall; each fragment is bounded .by a fringeof molybdenite. A sampletaken across 28

- 42 - inchesassayed: Molybdenite, 6.0 percent.

No: 13 is a rectangularstripping 10 feet by 15 feet thatexposes a 9-footlength of a quartzlens 2 to 3 feet thick, that strikes north 45 degreeswest and dips50 degrees south-westward. Numerous angularinclusions of quartz-diorite occur inthe hanging-wall of thelens. A fewsmall quartz lenses cut the quartz-diorite 5 feet west of the main lens. There is very little molybdenite in this showing,and the m.a- terial in a pile on the north-easterly side of the strippirg, contains but little 'molybdenite.

No. 14 is a stripping10 feet square that exposes a lens of quartz 5 feetwide 'by 6 feet long that strikes south 50 de- greeseast and dips 40 degreessouth-westward. This quartz. lenscontains numerous angularinclusions of quartz-diorite that are fringed by molybdenite crystals growingnormal to the facies of thefragments. The surface of the quartz is mark:ed by numerous blade-like gashes thatindioate thelocation of' , blades of molybdenitewhich have weathered. A sampletaken across. 5 feet of vein-matter and including five 1/2-inch fringes of molybdenite,'assayed:Molybdenite, 6.0 percent:. A sample taken'from an ore-dump that evidently represented hand-sortedmaterials assayed: Molybdenite, 8.6 percent.

No. 15 is a stripping 8 feet by 15feet that exposes a triangularly-shapedquartz lens 6 feetlong by 1 footwide, that is'apparently a continuation of the quartz in the last stripping;this lens contains only a few flakes of molybdenite.

Showing No. 16 comprises two veryshort trenches each of whichcontains a short stringer of quartzcontaining very little molybdenite. ,. No. 17 is a sidehill stripping 36 feetlong that exposes two quartz-veinsranging from 6 to 18inches in thickness that strike north 50 degree's west and dip 30 degrees south-westward. They are bordered in part by 1/4-inchfringes of molybdenite. The rock is quartz-diorite.

No. 18 is a cut 10 feet1ong.that exposes a 2-inchquartz vein, strike north dip 35 degreeswest, with 1/4 to l/2-inch fringes of molybdenite on its walls. It lies in a 3-foot aplite dyke of similar attitude and strike.

No. 19 is a cutthat has beendriven southerly into the hillside for 15feet. A shortlens of quartz, 2 feetlong by 6 incheswide, occurs close to the face; it contains a small amount of molybdenite.Fragments of aplitein quartz-diorite

- 43 - wereseen in both walls of the cut.

No. 20 cut,driven south 65 degreeswest.for 15 feet, badlysloughed, but exposes part of a 12-inchquartz lens that strikes north 50 degreeswest and dips40 degrees south- westward; thequartz contains a small amount of molybdenite.

No. 21 is a sidehillstripping that extends 24 feet north-westerlyfrom the west bankof a small creek. It ex- poses a quartz-vein 3 to 6 inches in width that strikes north 50degrees west and dips 30 degrees south-westward. The vein cuts'quartz-diorite and a 6-foot vertical aplite dyke that strikes north 55 degrees east.

No. 22 is a shortcut, almost completely sloughed, but it exposespart'of fine-grained, dark-green, lamprophyre dyke consisting almost wholly of hornblende and biotite.

No. 23 is a sidehillstripping andcut that exposes on its south-westerlyface a 9-footlength of quartz, 15 inches inthickness that strikes north-wester1.y. No molybdenite was showing. A 5-footwidth of thedark-green, lamprophyre dyke exposed in No. 22 lies on'the east side of thevein; elsewhere therock is quartz-diorite.

.No. 24 is also a sidehillstripping andcut that exposes what is pro'bably the extension of the quartz vein from No. 23; herethe quartz is 12.incheswide, and contains very little molybdenite. A 3-footwidth of thegreen, lamprophyre dyke is exposed adjacent to the east side of the vein.

No. 25 is a strippingthat extends for 56 feetsouth- easterly up the hillside andexposes a continuoussection of a quartz-vein that ranges from 8 inches to 2 1/2 feet in width, strikes north 45 degreeswest and dips 80 degreessouth-west- ward. The foot-wallpart of thevein is ribboned by thin films of veryfine-grained molybdenite; elsewhere the quartz is mass- ive. In general,the molybdenite in this vein is finer-grained than that seenelsewhere on thehillside. The vein,occurring as anelevated rib, is theonly material exposed in the strip- ping,except for some inclusions of thelamprophyre dyke and quartz-diorite;the presence of these inclusions indicate that thevein is laterthan the lamprophyre dyke.The.following sampleswere taken across the vein: one across the full 2 1/2- footwidth of vein at a place 25 feet from the north end, as- sayed:Molybdenite, 1.3 percent., and anotherfrom the same placeacross 6 inches of high-gradematerial in the' hanging- wall assayed:Molybdenite, 2,.5 per cent,; a third sample taken across the full 2 1/2-footwidth of the quartz vein at

- 44 - a point 8 feetfrom the south end, assayed: Molybdenite, 1.4 percent.

No. 26 is a sidehillcut and strippingthat exposesonly quartz-diorite and thin patches of the green dyke on the wes- terly wall.

No. 27 is a similarcut and stripping exposing quartz-. diorite and patches of green dyke, but no vein-matter.

No. 28 is a shortcut that exposes quartz-diorite, but no vein-matter., The quartz-dioritecontains a fewhornfela inclusions and in one place is cut by a 1-inchveinlet of epi- dote.

No. 29 is a stripping 12 feetlong that exposes a verti- cal quartz lens 1 foot wide that strikes north 37 degrees west; the quartz contains a little fine-grained molybdenite and paper- thin inclusions of thegreen dyke.

No. 30 is a shorttrench that exposes only the green lamprophyredyke, here 1 footwide.

No. 31 is a shorttrench exposing only quartz-diorite.

No. 32 is a shorttrench exposing quartz-diorite and E; stringer of quartz 1 inchthick.

No. 33 is a shorttrench exposing quartz-diorite and E~ part of greenlamprophyre dyke 1 footthick; offshoots of the dykewere seen to extend into the quartz-diorite.

No. 34 is a shorttrench that exposesonly quartz-diorite.

The best showing of molybdenite is the one known as the Creek Showing (Fig.3), approximately 800 feet down-streamfrom the camp-cabin. Inan area approximately 20 feetin diameter on the east bank of the creek (Pig. 3), the quartz-diorite has been intensely brecciated and the fragments sealed bymolyb- denite,orthoclase and quartz(Plate I1 B). Thismineralieed brecciahas been cut by post-mineralfaults, the fault-zones being marked by crushed rock and mineral matter; much of the molybdenitein the crush zones has altered to the canary- yellow,hydrated ferric molybdate, molybdite. The quartz- diorite here and to the north across thecreek-bed containa numerous feldspathesized greenstone inclusions : these are j,n variousstages of absorption or feldspathization by the qumtz- diorite and as a result range in colour fromdark-grey to EL light-grey,which is only slightly different from the general

- 45 - colour of the mainrock-mass.

The molybdeniteoccurs mainly as rims surroundingrock- fragments(Plate I1 B). Lessfrequently it occurs in the quartzforming the matrix for the breccia or in quartz-molyb- deniteveinlets cutting the rock mass. In the groundexposed, the best developmentof molybdenite is confined to the 20- foot area of intense brecciation which is shown by the area sampled inFig. (3). Only small amounts of molybdeniteoccur tothe north across the creek or in the trenches that lie north-westerlyand south-easterly fromthe Creek Showing. It is probable that the area or most intense brecciation consti- tutesthe central part of a breccia-pipe,and, therefore, has a verticalextent greater than its horizontal.

The faults and accompanying fault-zones are post-mineral in ageand as such have no causal relation to the emplacement of themolybdenite. The quartz-molybdenitesolutions probably rose through the brecciated quartz-diorite, the brecciated frag- mentsinducing precipitation of themolybdenite and orthoclase as is indicated by thefrequent occurrence of molybdenite and orthoclaseas rims around therock-fragments. The grade of the ore in the Creek Showing is shown by the table of assays or1 Fig. (3).

Trencheshave been dug on bothsides of thecreek in the vicinity of the CreekShowing, but so far have failed to un- cover an area of brecciated quartz-diorite containing molyb- denite similar in amount to that found on the eastern side of the creek in the CreekShowing.

Showing No. 35 is a trench45 feet long exposing a zone of breccia 10 feetwide in quartz-diorite. The brecciation in this zonehas been slight and the amount of quartz and molybdenite is correspondinglysmall.

Showing No. 36 is a trench 20 feetlong, exposing a slightly brecciated zoneapproximately 20 feet wide, the south-westerly 5 feet of whichcontains numerous veinlets of quartz;only a little molybdeniteoccurs here.

Showing No. 37 is a trench30 feet long. The rockin this trench is badlyweathered, but it appears to be slightly brecciated;quartz occurs as veinlets and irregular areas in thebreccia. Neither molybdenite nor molybditeare abundant. A saxpletaken across 3 feet at thenorth-east end of the trenchassayed: Molybdenite; 0.3 percent. and one across 3 feetat the south-west end assayed:Molybdenite, 0.2 per cent.

- 46 - Showing No. 38 is a trench SO feetlong which exposes a brecciazone approximately 20 feet wide,the fragments of which aresealed by quartz and a little molybdenite.

No. 39 is a trench EO feetlong. The quartz-diorite j.n thistrench contains an abundance of basicinclusions in vary- ingstages of absorption. The assemblage is cut by quartz-. veinlets, and in oneplace, by a pegmatiteveinlet 1/2 aninch wide. Very little molybdeniteoccurs in this trench.

No. 40 is a trench40 feet long that exposes quartz di- oritecut by quartz veinlets, and late orthoclase stringers. No molybdenite was seen here.

It is reported (!Wilmot, 1935,p. 49) thatthe production to date has consisted of 1,000 pounds of pickedore from which 350 lbs. of molybdenite was recovered.There has been no pro- duction in recent years.

The Creek Showing offersthe best chance for the deve:top- ment of an ore-body. In support of thisstatement, the writer suggests that the area of intense brecciation in this showing may form the central part of anore-chimney or breccia-pipe. The work done'todate'l(July, 1937) is all surface workand as suchdoes not supply data which may aid in determining either (1) whethersuch a pipeexists or not, or (2), if thepipe ex- ists, what its configuration is withdepth. The pipe may in- crease,decrease, or remainconstant in diameter with depth.

As anaid in determining the structure, diamond-drilling is suggested as the best type of future,preliminary exp1o:ra- torywork. Several 45-degree holes directed radially towards the centre of the area of intense brecciation would give de- terminativeinformation.

Thisprospect consists of the M-oll~ BENTHAM MOLYBDENITE Nos. 1 to -8 mineralclaims staked in PROSPECT. (30) 1937 by T. Bentham, and ownedby Bentham and associates of Powell:?iv- er, B. C. The writer examined thisprospect in September, 1939.

The showings are on the north-west side.of RaslamLake, a small lakelying about 6 mileseast of PowellLake. Haslam Lake may be reached from the toym of PowellRiver by follow- ingthe Cranberry Lake road south-easterly for 2.6 milesand thence by a branchroad to the east for 1.5 miles to a boat- landing at thesouth end of HaslanLake. From here a boat may betaken for 2 miles to the camp-cabin on the north-west shore of the lake.

The showings are scattered along the hillside between elevations of' 430 feet and1150 feet aboveHaslam Lake.

The mineralization consists of small amounts of molyb- denitein scattered occurrences of (1) aplite or fine-grained granitedykes, (2) quartz-filled joints ranging from 1\16 of an.inch to 1 1/2 incheswide, and (3) quartz veins ranging from 4 to 18inches wide. Assays of thesamples taken ranged from:Molybdenite, -nil to 0.2 per cent. The rock is quartz- diorite.

Themain working is an adit 430 feet above the lake andap- proximately 1,600 feetwesterly from the cabin. The working hasbeen driven northerly as an open-cut 15 feetwide for 9 feet,then as an adit 10 feethigh for 12 feet.This develop- ment cuts three aplite or fine-grainedgranite dykes in quartz- diorite. The dykes strikenorth 40 degrees east, dip 60 de- greesnorth-westward and range from 4 to 18inches wide. k small amount of molybdeniteoccurs as 1/8 to 1/4 of an inch flakes associated with pegmatiticquartz and feldspar on the footwall-side of thelargest aplite dyke. Two selectedsamples of thebest material assayed: Molybdenite, &.

At a point520 feet above the lake and about 900 feet south-easterly along the hillside from the adit, a stripping 15 feet wideextends in a direction north 15 degrees west for 45 feet. The bottom or southern part of the cut was covered by sloughedoverburden at the time of the writer's examination (September,1939). No mineralization was seenin the exposed part,but the dump showed a considerable amount or" material consisting of quartzstringers from 112 aninch to 2 inches widethat contained molybdenTte and chalcopyrite.Several of these stringers are reported to occur in the lower part of the stripping.'

kt a point 80 feet south-westerly along the hillside from the last stripping and approximately500 feet above the lake, a secondstripping extends in a directionnorth 15 degrees west for 35 feet.This stripping ranged in width from 10 to 15 feet. The mineralizationconsists of numerous quartzvein- letsoccupying joints in the quartz-diorite. These veinlets generallyrange from 1/16 of aninch to 1 1/2 inchesin width; one4-inch vein was seen. In the%-foot length of stripping 65 veinletswere seen, spaced from 4 inches to 2 feet apart. They containquartz and small amounts of molybdeniteand chal- copyrite.Seven chip-samples taken over consecutive 5-foot sections along the stripping assayed from: Molybdenite, -nil to 0.2 percent.

At a point100 feet south-westerly from the last strip-

- 4s - ping, a quartzvein has been exposed for 25 feet. This vein is vertical,strikes north 50 degrees east, ranges in width from 2 to 6 inches,and contains a small amount of molybdenite and chalcopyrite.

Thirty feet above and due west from the adit, a little open-cutting has been done on a vertical shearthat strikes north 45 degreeseast. The shear is 1 footwide and consi.sts of sheared,chloritic quartz-diorite that contains a small amount of disseminatedchalcopyrite and greencarbonate. It containsneither quartz nor molybdenite.

A* a point northerly from and 160 feet above the adit;, a small cut 2 by 5 feet with a IO-footface, has been made on an 8-inch wide aplite dyke that strikes north 50 degrees oast and dips 75 degreesnorth-westward. The dykecontains on1.y a very little molybdenite.

At a point northerly from and350 feet above the adit, a cut 10 feet long by 2 feet wide by 2 feetdeep has been made on a quartz vein from 6 to 12 inches wide that strikes no]-th 50degrees east and dips 75 degreesnorth-westward. The min- eralization consists of a small amount of magnetite, molybden- ite and yellow molybdic ochre.

Aplite, or fine-grained granite dykes cut the quartz- diorite at various places on the hillside between the adit and a bench approximately 700 feet above.These dykes, strike north-easterly,dip steeply north-westward, range in width from 12 to 18inches, and in placescontain a small amoun-c of molybdenite in paper-thin seams.

In 1937, the writer 'examined JFRVIS INLET - anoccurrence of molybdenite on MT. 'NELLINGTON MOLYBDENITE thesouth-easterly slopes (of PROSPECT, ( 38 ) Mt. Wellington, a mountainop- posite or south-westerly f:rom the mouth of Princess Louisa Inlet, near the head of Jervis Inlet. The occurrence is half a milesouth-west from the south-west end of a lake,about 2 miles long,that is approx- imately 3 miles from and2,800 feet abovetidewater'. The writer examined this prospect in September,1937.

Access is byUnion Steamship up Jervis Inlet to Gustaf- son's Logging Camp, where a launch may be obtained;thence by launch for 10 miles to the mouth of a small creek that flows intoQueen's Reach of Jervis Inlet from the south-west, at a pointopposite the mouth of Princess Louisa Inlet. From the beach,access is by anold logging incline or skid-way that

- 49 - extends up a very steep slope westerly to q point 2400 feet above the lake; thence.@ a poorlydefined 'foot-trail south- westerly for approximately 2 miles to the north-east end of a smalllake 2800 feet abovetidewater. From this end of the lake a log raft is used to travel, &'or approximately 2 miles, tothe other end of thelake. From here, a foot-trailleads south-westerly for half a mile to the bottom of a large talus slope that extends upwards to the base of unsoalablerock bluffs.

There are no workings on theproperty. The molybdenite occursin talus fragments as 1/8-inch flakes in clusters that rangefrom 2 inchesto 4 inchesin diameter scattered in quartz-diorite, and assimilar flakes associated with 2-inch clots of pegmatiticquartz, feldspar andmica, widely scattered inthe quartz-diorite. The occurrence of themolybdenite is notcontrolled by anyrecognizable structure. Many of the talus-boulderscontain numerous rust spots that are the result of oxidation of grains of pyrrhotite and pyrite.

Althoughtwo samples, taken across two individualclus- ters,.assayed: Molybdenite, 2.6 per cent. and 2.7 percent., respectively, these clusters are too widely spaced to permit mining in the aggregate; the distances between clusters range from 1 foot to several feet.

An occurrence of molybdenite on Gray Creek GRAY CREEK (49) was examinedby thewriter in june 1938. This is anold discovery and is considered to be the same onedescribed by Wilmot(1925, p. 31),which was stakedbetween 1916 and 1919 by Axel,Chas. 0. and Swan. A. hanson. The undergroundwork was probablydone during that period.

The property is reachedfrom GrayCrdek post-office, on the east side of IlootenayLake, by following a road easterly for 1 1/2 miles to Magee's farm,and then by following an old, overgrownroad for three-quarters of a mile to the only access- ible working, a long drift-adit.

The ground in the immediate vicinity of the adit is covered by densebush and the hillside rises steeply above the adit in a north-easterly direction.

The adit has beendriven north 62 degreeseast for 57 feet,north 56 degreeseast for 40 feet,north 62 degreeseast for 67 feet, and north 48 degreeseast for 11 feet to the face. Throuzhout its length it follows a vertical quartz vein that maintains a fairlyuniform width of 3 feet. lnlith the excep-

- 50 - tion of a 4-foot aplite dyke, the rock is massivegranite. The aplite dyke is vertical and strikes across the adit in a direction north 45 degrees east at a point 135 feet in from the portal.

The vein-matterconsists of abundantquartz, scattered masses of pyrite,clusters of muscoviteand a small amount of molybdenite. The location,width and assays of samples from thosesections of the vein showingmost molybdenite, are as follows. No. 1, 40feet from theportal, across 3 feet of vein-matter containing a considerable amount of pyrite and some molybdenite:Gold, trace; silver, 0.2 ounces per ton: molybdenite,0.04 per cent. No,. 2, 75 feet from the porta11 across3.5 feet of vein-mattercontaining some molybdenite but no pyrite: Gold, -nil;silver, I&; molybdenite,0.3 per cent.

The Sapplesmolybdenite property LITTLE KEEN PROPERTY. consists of theLittle Keen, L0S.t (50) Chanceand Lucky Jim mineralclaims stakedin 1932and ownedby Jack Sapples of Salmo. The property wasexamined by thewriter in June1938.

Thisproperty is on thewest side of Bennett(Bear) Creek closeto its junctionwith SheepCreek. The actual showings are 500'. abovethe Sheep Creek road and about half a mile southerlyfrom the road. The property may bereached by m3tor- road from Salmo by followinkthe Salmo-Nelway highway for 4 1/4 milessoutherly from Salmo, thenturning to the east and followingthe SheepCreek road for 3 3/4 miles to the camp atBennett Creek.

The showings are on a steep hillside, part of whichslopes north-easterly into Bennett Creek and partly to the north into SheepCreek. The hillside was severely burnedover several yearsago and is now coveredby doiun-timber and brush.

The generalgeology is described byWalker (1934, p. 86) in the following quotation:

"Molybdeniteoccurs in, and closeto the contact of, apliticgranite with sediments of thePend-d'0reille . series.This is presumably theoccurrence mentioned by 0. E. LeRoy inthe explanatory notes on.the sketch map of SheepCreek mining camp.

"Severalcuts and strippings expose a north-dipping contact between granite and strata of the Pend-d'0reille

- 51 - series. The granite is fine-grained and aplitic at the contact and locally is altered,the alteration being characterized by the development of greenish white talc with which molybdenite appears to be associated. The granite is veryrich in quartz, about 30 percent, and the feldspar is orthoclase or microcline with a relatively small amount of plagioclase. The argil- laceous sediments at the contact are highly altered to a mass of pyroxene, amphibole, calcite, and titanite. The intensity of alteration rapidly diminishes array fromthe contact. The limestone band is inpart in- tensely altered and holds abundant brown garnet and tremolite,considerable molybdenite, and a little pyrr- hotite. The lessaltered limestone has been given a greepishcolour.

"Disseminatedmolybdenite occurs in the sedi- mentsfor a few inches away from the contact, and also alongfractures for 1 foot or 2 feet from thecontact. The most northerlycut exposes altered sediments,and limestonecut by granitetongues. Molybdenite occurs in a narrow, vertical fissure striking 40 degreesand alsoalong joint planes in the limestone.

"It is evidentthat the molybdenite is closely associated with the granite contact and occurs either inthe granite or the enclosing sediments for short distances on either side of the contact."

The workings,consisting of a shortadit, open-cuts and' strippings,are described below:

The position of the workings will be given in respect of .the single short adit which is about 500 feet abovethe Sheep Creek road.

Prom a point 80 feet north-easterly down the hill on a 35-degree slope from the shortadit, an open-cut, 8 feet wide, hasbeen driven for 12 feet in a direction south 25 degrees west. The faceexposes a granite-sedimentcontact that ranges in strike from south 20 degrees west to south 10 degrees east and dips 45 degreeswestward: the granite lies und.er the sedi- mentson thesouth-easterly side of thecontact. Although the strike of thecontaot is locallyvery irregular, it canappar- ently be traced up the hillside to the south toward. the adit andnearby workings. No molybdenite was seenin this working.

The adit (as ofJune 1938) beginsas an open-cut driven in a direction south 25 degrees west for 10 feet to the portal;

- 52 - from here the adit extends in the same direction for 5 feet to the face. The north wa1.l of theworking consists of gran- ite andthe south wall of se'diments.Small amounts of molyb- denite occur at the contact and in the granite for 3 feet from thecontact. h samplealong 2.8 feet of whatappeared to be thebest grade of material from thecontact assayed: Molyb- denite1.5 per cent. Two samplesof mineralized granite mar thecontact taken across 2.9 feet and 1.6 feetassayed respec- tively;Molybdenite 0.9 and 0.3per cent. In this workingthe sediments contain very little molybdenite.

From a point 1.8 feet in a direction north 70 degrees west from the nouth of the last open-cut, a deepopen-cut extends in a directionsouth 25 degreeswest for 17 feet to a rock- face;this working seems to be theoldest on theproperty. The rock in this cut consists of phyllite andlimy sediments that havebeen largely replaced bybands of the lime-.silicate mineralsdiopside, brown garnet, and wollastonite. The sedi- ments strike north 45 degreeswest md dip 35 degrees north- eastward. In thiscut molybdenite occurs in a 4-footdiopside- garnet bandabout 4 feet thick on thesouth-east wall at a point 12 feet back from theface. A sampletaken across i-t assayed:Molybdenite 0.5 percent. It is interestingto note that the sediments in the face of this working are cut by an8-inch, aplite sill. Thisaplite is inpart replaced by pegmatitic quartz and the latter by brown garnet.

From the mouth of the adit open-cut, a stripping exte:nds south-easterly for 45 feet.This exposes only granite.

From thesouth-east end of this stripping a cross-trench extendssouth-westerly for 15 feet to a combined stripping and open-cutthat extends 15 feetsouth-easterly'and 25 feetnorth- westerly.This working exposes a contact between granite on thenorth-east and sediments on thesouth-west; the contact appears to strike nor'th 70 degrees west and dip 40degrees. south-westward. Two lenses of molybdeniteoccur along this contact; No. 1, measures 6 feet by 6 inchesand a sample across it assayed:Molybdenite 3.9 per cent.; No. 2, measures 2 feet by 18,inchesand a sample acrossthis assayed: Molybdenite 0.9 percent. Tavards the upper or south-easterly end a small amount of molybdenite was seenacross a 2-footwidth of sedi- mentsclose to the contact; a sampletaken across this assayed: Molybdenite0.3 per cent.

The rock in this working consists of granite to the north- east of thecontact and phylliteto the south-west. A sma.11 amount of diopside and garnet occurs along the contact.

- 53 - Severalopen-cuts have been dug to the south up the hillsidefrom the last cut. Although some of theseexpose a granite-sedimentcontact,, none containmolybdenite other than in traces.

The showings as of June1938, do not show anymineable bodies of commercial ore.

The Molly molybdenite property consists of MOLLY (52).the following Crown-granted claims: and Molly Nos. 1 to 9 inclusive which are owned bythe Consolidated Miningand-Smelting Company of Canada, Ltd.This property wasexamined by thewriter in June,1938.

The property, located on LostCreek in the .NelsonMining Division, is reachedby leaving the Nelson-tielway Highway at a pointapproximately 5 3/4 milessouth of Salmo and follow- ing an old road that goes up the south fork of the Salmo Riv- er for approximately 1 1/2 miles to Lost Creek, thence by a branchroad north-easterly up Lost Creek for 2 3/4 miles to the old camp-site that is half -a-mile to th.e.vrest of the mouth of a northerly-flowingtributary of Lost Creek. At the time of thewriter's visit (June, 1938), it, was impossibleto take a car more than 1 1/2 miles up the road.

The workingsare on thesouth side of LostCreek approxi- mately 600 feetabove the creek-bottom on a steep northerly- sloping hillside.

The generalgeology is asgiven in the following extract by J. F. Walker(1934, p. 85):

"The property is on the west end of a large area of granite extending for 4 milesalong Lost Creek. The edge, of the granite body at the Molly runs a little east of south up the hill to an elevation of 4,000feet, where it turns east and follows this dir- ection for a little over1,500 feet, to where it re- sumes its southcourse. To thewest sediments%rgil- 1aceous)outcrop for about 1,200 feet, beyondwhich graniceoutcrops westerly for several hundred feet, andup the hillside, to elevations of 3,600. feet to 3,700 feet.

"The granite is jointed or sheeted more or less parallelto the contactwith the sediments. The molyb-

* (insertionby Stevenson)

- 54 - denite occurs in the granite close to the contact and mostly in a sheeted zonehaving a maximum observedwidth of 10feet. The sheeted zone strikes from15 de- grees to 25 degrees, and dipsfrom 40 degrees wes- terlyto vertical. The bestmineralization appears to be at a point where the contact dips at low angles as if this point were near the top of the granite body. The northerlyextension of thebest minerali- zationappears to havebeen eroded away. A little molybdenite can be seen disseminated throughout 'the granitein the single, shortadit.

"Themost favourableground appears to be along thecontact (into the hill-side) south fromand about atthe level of theopen-cuts. Some diamond drill- ing has been done in this direction, but the results are unknown to the writer.

"Four thinsections were cut fromspecimens takenacross 3 feet of thesheeted zone holding averagegrade mineralization. One sectionholds only traces of molybdenite. In theother three sections pyrrhotite is thepredominating sulphide and is accom- panied by chalcopyrite,molybdenite, and pyrite. Al- most all the molybdenite is intergrown with pyrrhotite in grains few of which are larger than 0.05 nun. and many are smaller. The mineralization appears to be laterthan the granite. Molybdenite is' plastered along some of the joint planes in the sheeted'zone, andforms a small percentage of, the high-grade ore."

The workings,which consist of one shortadit and several open-cuts, are described in detail below.

The adit has been driven in a direction south 45 degrees east for 58 feetto the face. At a point50 feet from the portal a cross-workinghas been driven in a direction south 35degrees west for approximately 45 feet. From a point15 feet backfrom the face of this cross working, a raise con- nectswith a deepopen-cut approximately SO feet above.Five feet north-easterly fromthe raise a working has been driven to the west for 5 feetwhere a large winze now filled with water and of unknown depthhas been sunk. The onlystructure in the adit is a 4-footsection of sheeting in the south-west end of thecross-working; otherwise there is onlymassive granite. A few specks of molybdenitewere seen in the walls of this adit. Eowever, it is reported byWilmot (1925, p. 37) that the best ore on the property was found at the bottom of this winze.

- 55 - The raise from the adit breaks through into the floor of anopen-out 12 feetdeep and 8 feetwide that extends easterly up the hillside on a 30-degreeslope for approximately 80 feet. The wholecut is within the zone of well-defined sheeting in thegranite. This zonehas a minimum thickness of 8 feet in thecut. The component joint-planesstrike north 25 degrees east and 45 degreeswesterly. The joint-planes,spaced from 6 to 18 inchesapart, are by no means parallel,they curve gradually into each other and enclosemasses of unfractured granite.Neither the joint-planes nor theintervening granite in this cut carry much molybdenite.

Ten feet north-easterly from the top of the last cut, a smallcut has been driven 4 feet in a direotion north 75 de- grees east and 4 feet in a direction north 25 degreeseast. Thiscut is inthe same sheetedzone. Two samplestaken acrossthe sheeting in this cut assayed: Molybdenite 0.1 and 0.08 percent. respectively.

Severalshallow cuts and strippingshave been made for a distance of 60 feet north-easterly from here. Theseindicate thatthe zone of closelyspaced sheeting dies outnorth-easterly and a few small patches of' quartz-feldsparpegmatite appear.

A short distance to the south-east up the hillside from theopen-cut immediately over the raise, a largeopen-out has beenexcavated along the contour of the hillside for 75 feet in a directionnorth 30 degreeseast. At thesouth-westerly end of this cut sheeting is welldeveloped over a zone that measures14 feet inthickness. Ths joints, 4 inchesapart, are more, closely-spaced than inthe lower cut, and they strike northerly and dip 35 degrees westward.Although the sheeted zone contained more molybdenite than any other part of this cut,the amountwas very small. h sampletaken across its widthassayed; Molybdenite 0.1 percent. To thesouth-east up the hill from this cut, in the foot-wall of thesheeted- zone, as in the cuts north-easterly from themain cut, small patches of quartz-feldsparpegmatite were seen.

It is understoodthat a considerable amok of diamond- drilling was done by the Consolidated Mining andSmelting Com- pany previousto 1934.

Although no ore was in sight at the time of the writer's examination,past reports indicate that a considerableton- nage of high-gradematerial was mined and shipped,Descrip- tions by Drysdale(1915, p.254) and by Wilmot (1925,p. 37) indicate that the ore must have come fromthe mainopen-out and raise connecting the adit with the open-out and, from the winzein the adit. The following is therecord of production, as given by Wilmot (1925,p. 38): - 56 - TABLE IV

Shipmentsfrom Molly Mine, B. C.

~

Dat Ship- Place of ToXhom Sent '0 und s Percent. Remarks nent s Extraction lry ore Molybdehite (Nosz) - 191 Surfaceshowings Henry E.Wood, ore Molybdenite testingplant, (MoSz) 85% of Denver. Colo. 17,119 9.335 contents at 20b per pound.

I 822 30.175 ,,

, 29,895 10.250 I1 I 191 Top of shoot 48,202 12.26 9% of Molyb- denite (MoSz) contents at 50,d per pound. Oresamples Xew York 4,000 9.50 At schedulerates 191 Underground International Moly' denm Co.Renfrew 22,810 10.36 (hand-cobbed) 191 .81,000 3.84 At schedule rates Mines Br. ore test ingplant, Ottawa 44,924 3.14 - ...... 56,148 3.31 1TAI L-04,920 5.88 - The averagerecovery from run-of-mineore seems, therefore, to havebeen about 3 1/2 percent. The Margaretgroup consists of six MRGARET GROUP (62) mineralclaims, the Margaret, William,David Fred and Jean, staked in 1936 and owned by 0. A. !Woolsey of 4329 Kinney Street, Van- couver. The writer examined this property in September, 1937.

The property is 12 milesnorth-westerly from the head of Pitt Lake. It is reachedfrom Pitt Lakeby followingPitt Riverup-stream for 3 milesalong an oldmotor-road, then crossing the Pitt River to the west side in a rowboat;thence by good pack-horse trail for 9 miles to the camp and workings at anelevation of 1800 feet.

The shoTvings are betweenelevations of 1650feet and 1850 feet, on BoiseCreek thatflows south-easterly into Pitt River, joining it approximately 4 milesabove the head of Pitt Lake. The mostimportant showings are along the banks of BoiseCreek near its junctionwith a smll south-westerlyflowing creek that joins Boise Creek frdm the east at an elevation of 1670 feet.Several less important showings occur along the bed of thi.sbranch creek and isolated showings in other more remote branchcreeks.

In the immediate vicinity of the showings,Boise Creek flows in a V-shaped valley, the hillsides of which are heavily timbered. In many placessloughing along the creek banks exposesbed-rock and the molybdenite showings. The main branch-creekflows through a rockycanyon a.nd over a rocky floor to BoiseCreek.

The rockformation of the immediatearea is quartz-di- orite that includes many large and small inclusions of fine diorite,andesitic greenstone andremnants of feldspar-porphyry dykes

In the vicinity of the main molybdenite showings, the hy- brid mixture of quartz-diorite and diorite is conspicuously sheeted by closely-space3joints; however, these do notappear to haveinfluenced the localization of themolybdenite. On the other hand, it is to benoted that the most abundant molybden- ite occurs in an area where the amount of dioriteconspicuous- ly exceeds the quartz-diorite, whereas quartz-diorite with very little diorite, common at distances of 500 feet or morefrom the mainmolybdenite occurrences, contains only widely scat- tered flakes of molybdenite.

The molybdeniteoccurrences on the property are of two types.First and mostimportant, are stringers and clusters of molybdenite flakes in silicified crush-zones that are up to

- 58 - 3 feetwide; and second,scattered segregations in clean-cut quartz-pyriteveins that range from 1/2 aninch to 12 inches wide. Of these two types,the first is the more important.

The mainoccurrence of molybdenite is at the portal of the only adit which has been driven on the south-west side of BoiseCreek, opposite the junction of this creek, at 1670 feet elevation,with the branch-creek as above described.

Thisadit has been driven in a direction south 25 de- greeseast for 25 feet. Most' oP themolybdenite occurs in an indefinite zone thatranges Prom 2 to 3 feetwide; and strikes north-easterly.This zone cons'ists of leachedand silicified wall-rock that contains scattered clusters OP Plake-molybden- , ite and quartz-pyritemolybdenite veinlets which range from 1 inchto 3 incheswide.

Three samples taken across this zoneassayed as follows. Across 12 inches at a place 6 feet in fromthe portal; Molyb- denite, 0.72 percent; iron, 8.5 per cent. Across 28 inches atthe portal: Molybdenite 0.36 percent.; iron, 4.6 per cent.Across 14 inches at a point 3 feetout from theportal: Molybdenite, 1.26 per'cent.;iron, 5.7 percent.

Immediately to the north and north-east across Boise Creek from the adit, two smallcuts have been dug on two lean molybdeniteshowings. One cut, is located 75 feet in a direc- tion north 45 degrees east fromthe adit, and hasbeen driven 3 feetnorth-easterly; the other cut 8 feet above, is 30 feet north-westerlyup-stream from the lower, aad has been driven 8 feet in a direction north 20 degrees east.

The lower cutexposes three irregular,gash 'ieins of quartz and pyrite,averaging 2 incheswide, that occur in a 5-fooi; wideleached zone in,the quartz-diorite; this zonecontain:! a small amount of disseminatedmolybdenite. The uppercut ex- poses a flat vein, 4 incheswide, containing quartz, pyrite and a small amount of molybdenite.

A small cuthas been driven 3 feet north-westerly into the bank of a small branchcreek, at a place 150 feet in a direction north 70 degrees west up-stream from the last upper cut.This cut has'been driven on a lenticularcrush-zone that ranges from 4 to 8 feet wide and' contains four 4-inchvein:; of quartz,pyrite and a littlemolybdenite.

Severalwidely spaced quartz-molybdenite veins occur :in the bed of thebranch creek that ,joins Boise Creek directly across from the adit. These will bedescribed consecutive:ly

- 59 - up-stream towards the falls.

Number 1 is a 4-inchwide quartz-molybdenite vein-outcrop- ping in the east bank 50 feetabove the creek bed, 230 feet up- streamfrom Boise Creek. A sampletaken across this assayed: Molybdenite, 0.9 percent.; and iron, 5.0 percent.

Number 2, a 4-inchwide quartz-pyrite vein in the bedof thecreek and 240 feetup-stream from 3oise Creek, contains only a little molybdenite.

Number 3,40 feetup-stream from number (2) is a 12-inch wide quartz vein that contains the mostabundant molybdenite of any of theoccurrences on theproperty. A 12-inchsmple acrossthis assayed: Molybdenite, 2.52 per cent.; and iron, 1.9 percent,

Number 4, 70 feetup-stream from number (3) is an 8-inch wide quartz-pyrite vein with very little molybdenite.

Xumber 5, 30 feetup-stream from 4, is a 3-inchwide quartz-pyrite vein.

Number 6, 70 feetup-stream from number (5), is a zone containingsix, 4-inch wide veins of quartz andheavy.pyrite, butcontaining only a little molybdenite. A 10-inchsample of thisassayed: Mo1ybdenite;nil;and iron, 9.4per cent.

In therock bluffs immediately below the falls of a creek thatflows south-easterly into Boise Creek 1500 feet up-stream from the adit, there are a fewquartz-pyrite-molybdenite stringers in the massive diorite.

Fourhundred feet down BoiseCreek from the adit, an 8- footcut has been driven north-easterly into the east bank of thecreek on a 10-inch wide fracture zone that contains pyrite, quartz,broken diorite and a littlescattered molybdenite.

At anelevation of 1840 feet on bothbanks of a creek, thatflows north-easterly into Boise Creek and joins it approx- imately1000 feet down-stream from the adit, there is a wide crushedand leached zone in the quartz-diorite that carries scattered andvarying amounts of molybdenite. Here, a combin- ation of open-cuttingand sloughing of thestream-banks has ex- posed two main crush-zones,one down-stream, 12 incheswide and oneup-stream, 12 feet wide;the strike of bothzones is indefinite,but ,is apparentlysouth-easterly across the creek. A samole takenacross the 12-inch wide zone assayed: Molyb- denite,0.72 per cent; iron, 5.4 per cent. A 6-footsample

- 60 - LEGEND

Lamprophyredyke pc?J Rhyolite Em Porphyriticgranodiorite D Aplite E2 Argillite (in part quartzite) mm0 Quartz vein or lens - Shears or shear-zones

.D 0 -.a eo Scale P" IFeet

0.25 tons M'osz nil A " 0.22 c Ag 14.5 03 Cu. nil Pb 4.1 9s 2" 3.4% As 1-0 % Fig. 4. Tidewater mol.ybdenm property. Plan showing surface geology. takenacross the best mineralization in the 12-foot zone as- sayed: Molybdenite, -3 nil- iron, 2.9 per cent. The rock in thesecrush-zones is both silicified and sericitized to such an extent that the original nature of the rock is destroyed.: however, it is consideredto be quartz-diorite and similar tothat up-stream anddown-stream. For a shortdistance dorm- stream from these crush-zones there are numerous tight, wic.ely- spacedstringers of quartz and pyrite and a little molybdenite, from 1 inchto 2 incheswide.

At anelevation of 3400 feet.in a smallcreek that flows north-easterly into Boise Creekand disappears in a rockand snow-slide300 feet up-stream from the adit, occasional string- ers of quartz and molybdenite are exposed in the quartz-diorite bed-rock of thestreani. Thisproperty comprises the Molybdenum /A TIDEXVATER MOLYBDENUM andSuccess Crown-granted claims and *f! PROPERTY * severalclaims held by location. It 5& ci? (74) is ownedby G. W. Bruggyandassoc:i- ates of Alice Arm, who purchasedt:he two Crown-grantedclaims at Tax Salein 1930.

The claims are on the north side and at the head of the Alice Arm inlet, about 4 miles from the town of Alice Arm. The camp andmain workings are at about 1,000 feet elevation andabout 1 milefrom the beach.

The area is reached by coastal steamer to Alice Arm a-ad thence by launch tothe property, camp andworkings. A good pack-horse trail extendsfrom the beach.

The property is on the lower southernslopes of the Chal- oner Range of theCoast Mountains. From the beach tothe :amp and adits, the hillside has a generalslope of about 15 degrees, xith intervening knolls and ridges, and is covered by fallen and some standingburnt timber and by characteristic underbrush. From the camp to the northern extremity of the surface showings, at1,370 feet elevation, the hillside has a generalslope of 25 degrees.North of this elevation, and to,.vards and in the area of graniticrocks, the slopesteepens and the hillside becomesmore rugged.Green timber composed mainly of hemlock, with some spruceand cedar, extends up the hillside to timber- line at abou't3,500 feet elevation.

The old mill buildings, tramwayand bunkershave completely collapsed,but one cabin, at an elevation 1,005feet and two - of *A synopsis of a report by Joseph T. Mandy.

- 61 - blacksmith-shops still standand are in good condition.

The cabin is equipped to accommodate three men and the blacksmith-shopsare equipped for hand-steel work. There is no machinery on the ground.

The volume of water in the creek would be probably suffi- cient for camp use, alt,hough during dry periods the volume wouldbe greatly reduced.

There is sufficient timber in the locality of the work- .ings for miningrequirements and there is abundantfirewood close at hand.

The depositconsists of numerous disconnectedlenses of quartz mineralized with varying amounts ofmolybdenite.

The rocksin the area include sediments and some greenish andesitic dykes of the lowerHazelton group of Mesozoicage, intruded by graniticrocks of the Coast Range batholith. The main eastern contact of the batholith lies 1 mile to the west of the property.

The sedimentaryrocks consist of interbeddedslates, ar- gillites,argillaceous sandstone, sandstone and quartzite and possibly some beds of water-laintuff. The rockshave a general north-easterly to easterly trend and although folded with vary- ingdegrees of intensity,they have a comparativelysteep south- ward dip.These rocks are intruded bynumerous hardand fine- grained,greenish andesitic dykes of pre-batholithage.

All the above rocks are intruded by spurs and dykesre- latedto the batholith. In thevicinity of theshowings, these spursconsist of bodies of apliteand rhyolite, some granitic dykesand numerous lamp'rophyre dykes which strike in a general north-easterlydirection and dipsteeply westward. These rocks and their structural relations are especially well-ex- posedalong the beach and in the creek-canyon.

Aplite and rhyolite occur to the north and west of the molybdenite-bearingquartz veins and appear to limit the con- tinuity of theveins. On thesurface, Fig. (4), theveins strike north-easterly towards a body of pink aplite which trendseasterly. As theaplite is approachedthe feldspar con- tent of theveins increases and the veins merge with the ap- lite.In the underground workings an appreciable feldspar content is evidentin places in the veins in their most nor- therly exposures.

- E2 - ... ,.LEGEND

Larnproph$edyke, ,:..~.. ..., Quartz vein or lens ssss

"" Rhyolite !::~;. EZZ Shearing ""j , ,., .. Argillite :j';;:,: .~ ...... , ,... a S;a,81 k0i ' L , ** _" Feet A body of rhyoliticrock Fig. (5), convergestowards the veins from thewest and disrupts their continuity, both on surface and inthe northern section of No. 2 aditdrift. Lo- cally the aplite at the northern end of the showingscontains patchesand streaks of disseminatedmolybdenite. The ev.idence suggests that the veins and molybdenite mineralization origin- ated from the batholith at a late stage in its consolidation. The veinscould be classified as pegmatitic quartz veins.

Shewing is prevalent along lines striking between north and north-easterly anddipping steeply westward, genera1:ty followingthe contacts of the dykes withthe sedimentary rocks. Locally,the shearing cuts the veins and the lamprophyre dykes. Some faulting has occurred, but noappreciable displacements of theformation or theveins is evident. Lamprophyredykes cutthe veins, and interrupttheir continuity so thatprojeo- tion of theveins along their strike and dip is difficult.

The veinsare exposed in theworkings, Fig. (5), and .in- termittentoutcrops, Pig. (4), between1,015 and 1,344feet elevation,along a horizontaldistance of 920 feet. They out- crop in a creek-canyon,in both the bed of thecreek and on thecanyon-walls, Fig. (4). Theseveins comprise quartz stringers,veins and lenses, ranging from a fraction of an inch to several feet wide, mineralized with fine-grained molyb- denite. The molybdenite is erraticallydistributed withftn the veins as thin ribbons and to a small extent as disseminated materialwithin the vein-quartz. As thequartz generally breaksalong the ribbon-banding, freshly broken vein-matter can eive a most deceiving appearance of solid molybdenite min- eralization,whereas this mineral occurs only as a thincoat- ingon the wails of thefractured quartz. Locally, a mere shadowy banding of the quartz is the only evidence of miner- alization, and, when suchmaterial is broken,finely-divided molybdenite is visibleunder a magnifyingglass. Theon:.y sul- phideaccompanying themolybdenite in the lower exposures and mainworkings is a small amount of pyrite. The molybdenite mineralization is confined to the quartz veins and doesnot penetrate the wall-rooks.

As the veins approach andmerge with the aplite to the north,the tendency to disperse ihoreases, the stringers be- come smaller and tighter,the pyrite content increases and galena,sphalerite, arsenopyrite and some chalcopyritebegin to occur.In the aplite, some shearingsimilar in strike to that of the quartz veins is locally well-mineralized with galena,sphalerite, arsenopyrite, some chalcopyriteand tetra- hedrite. In formeryears, soma work was done on these show- ings,but the workings have sloughed and are now coveredwith

- 63 - talus. The aplite,into which the molybdenite-bearing quartz veinsappear tp merge, locallycontains some streaks and patches of molybdenite.

The quartzveins, stringers and lenses strike in a gener- al north-easterly direction and dipsteeply north-westward. Localvariations in strike and dip are frequent. The vein wallscomonly vary in dip. These featurestend to produce variations in width within short distances end great irregu- larityin horizontal and vertical continuity. Additional dis- ruptions of continuity arecaused bylamprophyre dykes cutting the veins. Thesedykes constitute a largeproportion of the rock in the locality of the veins and frequently formboth walls or completely encompass thequartz masses. Where the veinsezter large areas of argillaceous rocks, they tend to form small. stringersand to disperse. This is evidentboth undergroundand on the surface, especially in the mostsouth-~ erly outcrops south of the portal of No. 2 adit and in the most southerly exposuresin No. 1 adit. Horizontal continuity of the veins is also disrupted as they approach aplite and rhy- olite areas, the mainmasses of which lie to the west and north. Small tongues of theserocks, however, alsoproject into the centralsection of the showings. The intrusion of thesetongues is probablyresponsible for some of theblind or isolated.masses of quartz occurring in the workings.

On the surface, the quartz becomes more glassy and the oc- curreme of feldspar more frequent as the veins approach the rhyolite and aplite. Underground, the same characteristics prevail to the north along No. 1 and No: 2 adits with a marked decrease in the molybdenite content of the quartz veins espec- iallyevident in No. 1 adit. In thissection of theworkings, quartzites become more abundantand are very comon in the most northerlyexposures of bothadits. The evidenceindicates the cl.oseapproach of the most northerlyunderground workings of both No. 1 and No. 2 aditsto intrusive rocks and theconse- quent disruption of the continuity of the veins in this direc- tion at this general elevation.

A summary of thegeological sequence of events is con- strued to havebeen as follows:

1. Deposition of sedimentaryrocks. 2. Intrusion of greendykes. 3. Intrusion of graniticrocks. 4. Fracturing. 5. Formation of quartz. 6. Crushingand formation of ribbon-structurewithin the veins.

- 64 .- 7. Deposition of molybdenite. 8. Intrusion of lamprophyredykes. 9. Lateshearing.

Detailsof the surface geology are shown in Fig. (4.).

The property is referred to in The Annual Report, Blin- ister of Mines, British Columbia, for theyears 1916-191.8 in- clusive and1928-1931, inclusive, and in G.S.C. Reports by McConnell, (1913, p. 93), Doimage, (1922,p. 30-A) Wilmot, (1925, pp. 44-46) and Hanson,(1935 pp. 37-38). For ref'er- encessee bibiiography at the end of bulletin.

In 1916 the mine was operated by the Molybdenum Mining and Red.uction Company, (C.P. Riel, Manager). This company built a 100-ton flotation plant at the beach, and made oonnec- tions with the workings by an aerial tramway. A description of the equipmentand mill. is given by J. M. Turnbull,in the Annual Report,Minister of Mines, British Columbia, 1916, pp. K-66-67.

It appears,however, that very little ore was treated in thisplant because :Nilmot,(1925, p. 45),says:

"Of the 383 tons of orethat were shipped, all exccpt 5 tons was sent to the International Molybdenum Com- pany'sconcentrator at Renfrew. Owing tothe average grade of theore being 1.60 percent MOS2 instead of 3 percent. as was expected, and to its complex nature, the Renfrew company wereunable to make a concentrate and refused to accept most of theshipments. About 45 tons of thetailings, which appeared to be almostas rich as the original ore, was sent to Ottawaand re- concentrated,as a result of which 1,368 pounds of' molybdenite was recovered.

"The Departmentof Mineswas approached with a view to treating the remaining ore at Renfrew,but the mo:.yb- denite market had then collapsed and the ore was not shipped. "

The outputfrom this operation came from thesmall stope to surface off the east drift of No: 2 adit.

From the time of cessation of theseoperations in :1916, theproperty remained idle until April1930, when work was re- sumed by theDalhousie hlining Company, Limited, (D. S. Wit, Secretary).This work consisted of drivingthe Eo. 1 adit, and driftingin No. 2 adit. Work stopped on April 23rd:.1931.

- 65 - In 1931 theDalhousie Mining Company shipped a sample of 2700 pounds to the CanadaDepartment of Kines'.Ore 3ress- ingand Metallurgical Laboratories, Ottawa. A detaileddes- cription of the metallurgical tests on this ore may befound in the Department's Report No. 393.

Very little surface work hasbeen done, or if it hadbeen done in formeryears the openings have now sloughed or are coveredwith talus. Surface continuity of theveins is es- tabiished entirely by intermittent outcrops along the bedand banks of thecreek, Fig. (4).

Undergrounddevelopment, Fig. (5), has been carried'out in two main adits at respectively 1,01.5 and 1,121 feeteleva- tion. No through-raisesconnect No. 1 and 2 adits. One raise hasbeen .started at the northerly end or^ No. 1 adit andex- tends for 59feet. The smallstope off No. 2 aditextends to thesurface. "wo shallowwinzes have been sunk from No. 1 and No. 2 adits; these were full of water in October,1939.

The details of the assay results and the sample locations, areillustrated on Fig. (6).

The method of cutting channel samples across the veins by hand moils was usedthroughout the examination. Whenever possible,these channels were evenly spaced at intervals of 5 or 10 feet,occasionally closer, to meet the mineralized char- acteristics of specificstretches of vein. In sectionswhere stringersoccurred, the stringers or veinswere sampled either exclusive or inclusive of theintervening rock with the idea of obtainingthe greatest degree of accuracy. In sections wherecertain widths of stringers were selectively sampled, theassay value is caioulatedacross a total practical mining width with theintervening width of rockincluded in the cal- culstion as containing no molybdenite.

Because of the markedly lenticular nature and discontin- uity of the lenses within short distances,' both vertically and horizontally,anyone makingtonnage estimates from theassays as shown in Tig. (6), must make thecalculations with due re- gard for suchuncertainty in the projection of veinlengths and widths.

The best grade molybdenite mineralization noted on the propertyoccurs in the old stope off No: 2 adit(upper). In this workingsampling indicates a grade of 2.65per cent. molybdenite for a length of 12 feet, and a width of 4.1 feet, butthe tonnage of this material is small and limited.

In No. 1 adit,the best grade. indicated is 1.05per cent. molybdenite for a length of 78 feet and a width of 3.9 feet..

The mode of occurrence, type of deposit and geological structurerelative to the mineral occurrence, indicates the probable limitation of continuity of the mineralization to the north bjj mergence with intrusive aplite, and to the south by stringering of thequartz in the sedimentary rocks. In depth, approach to intrusive rock is also indicated and although good widths of quartzoccur, there is definite indication of dimin- ution in grade.

Should furtherexploration be done 01: thisproperty. it is reconrrended that this beconfined to surface trenching to- wards thesouth from the present known southern limits of the veins with open-cutting of any vein exposures as warranted. Some exploratory drifting south in No. 1 adit on known struc- tures, would also beconstructive.

The L.H. group comprises the mineral claims, L-H GROUP (80) a,L.H. No: 1, and L.H. No. 2, stakedin 1938 by X. 'N. Lynes,Sicamous, E. C. and 0. Hoglurid,and ownedby the same men. The.writer examined this propertyin August,1939.

The property is approximately 3 milesnorth,-west ofMala- kwa, a statipn and smallsettlement on theCanadian Pacific. Railway and on the Trans-Canada Highway, approximately 36 miles west of Revelstoke. Prom Malikwa station,the property is reached by a motor-road that follows the west side of Eagle Rivernortherly for a distance of 2.2 mile.s,as measured from thestation. From this point a fairly steeptrail is followed for 8000 feet to the camp-cabin at anelevation of 2720 feet: this is a good pack-trail for approximatelyone-third of the distance from the endof themotor-road.

The workingsare in the bed of a creek. The hillside on either side of the,creek is steep,heavily wooded and cov- ered with extensive overburden.

Most of themolybdenite occurs (i) in a shear-zoneap- proximately 4 feet wide that strikes north and dips 25 degrees westwardwithin pink granite, and (2) inwidely-spaced shears that occur in the granite in the hanging-wall of the main :;hear- zone. The molybdeniteoccurs as paper-thin films in the c1n-v- ing slips associated with the shear's and occasionally as scat- ter.edgrains in the more massive granite between the shears. Samples takenacross the shear-zone and elsewhere in thegran- ite wheremolybdenite occurs, indicate that, although the molybdeniteas a mineral is conspicuous,the actual molybden- itecontent is low; thehighest assay obtained was: Molyb- denite 0.4 percent.

The rockson the propertyinclude pink granite, granite- gneiss,quartz-mica schist and a fewlamprophyre dykes.

The pinkgranite appears to be a beltapproximately 100 feet wide that strikes north and is boundedon the east by granite-gneiss and on the west by quartz-biotite schist and granite-gneiss.

The granite is medium in grain and light pink in colour. it is cut by themolybdenite-bearing shear-zone and bynumerous shear-planes,spaced 1 inchto 4' inchesapart, which strike north and dip 45 degreeswestward.

A widespr'eaddevelopment of' sericite is indicated by the large amount of compact sericite within the shears, and by the completesericitization of thefeldspars in thegranite. In addition to the molybdenite, a few stringers of quartz and scattered grains of pyrite occur within the granite.

The granite-gneiss is a. grey,coarse-grained rock, con- sistingmostly of potashfeldspar, quartz and biotite. It is distinctly gneissic and some phasespossess a marked augen texture,characterized by thewrapping of large biotite flakes aroundlens-shaped fragments of feldspar. The foliation of thegneiss is vertical and strikesnorth 22 degreeseast. The gneiss extends for an unknown distance both westerly upstream and easterly down-streamfrom the pink granite, and appears to be the most abundant rock in the region.

Quartz-micaschist and interbedded massive quartzite ex- tendup-stream for approximately 150 feet from the west side of thepink granite. The schiststrikes fairly uniformly to thenorth-east, but the dip is variable,ranging from nearly horizontalto 25 degreessouth-eastward.

Close to the granite the schist is cut by a 15-footwide biotite-lamprophyredyke that is approximately vertical and strikesto the north. A shortdistance farther up-stream, quartzite is cut by a similar dyke that is hereonly 4 feet wide,and strikeseasterly and dips 20 degreessouthward. A third lamprophyredyke, 4 feetthick, strikes .north-easterly across the creek from near the portal of the adit: this dyke dips 20 degreesnorth-westward.

The workingsconsist of a short adit on thesouth-west

- 68 - side of the creek and shallowopen-outs on the north-east side.

The adit has beendriven in a direction south 75 degrees west for 20 feet. The first 5 feet of theadit cuts the mim- eralizedshear-zone which strikes northerly and dips 20 de- greeswestward; the remaining 15 feet of theadit passes out of the shear and the face is in relatively massive granite. The shear-zone is in the granite and adjacent to the hanging- wall-side of a 4-footlamprophyre dyke that strikes north- easterlyacross the creek and dips 20 degreesnorth-westward. On thesouth-west side of the creek the dyke is whollyin pink granite,but on thenorth-east side it is whollyin granite- gneiss. It is to be notedthat the contact between thepink granite and granite-gneiss strikes northerly across the creek from a point just east of the dyke at the portal of the adi.t.

The followingsamples were taken:No: 1, 4.5 feet verti- callyacross the shear at the portal assayed: Molybdenite,

Inil. No. 2, 4 feet vertically across the shear 4 feet in from theportal on thenorth side of theadit assayed: Molybdenite,

Inil. No. 3, 4 feet similar to the last, but on the south side of the adit assayed: Molybdenite, -nil. No. 4, across 6 inches of crushedmatter at the face assayed: Molybdenite, 0.2 per cent. No. 5,black gougefrom a slip at theface assayed: Molybdenite, 0.2 percent. No. 6, 4.0feet vertically in the faceassayed: Molybdenite, 0.4 percent.

The banks of the creek have beenstripped clean for a distance of approximately 60 feet up-stream from the adit. On thesouth-west bank theshear-zone is exposed for approx- imately 20 feet northerly from the adit., A sample taken across it assayed:Molybdenite, nil. , The main shear-zone, as ex- posed in the portal of the adit and for a short distance up- stream,does not continueas a definite zoneacross the creek; it seems to havebeen dissipated as a number ofnarrow, closely- spacedshears 2 inches or lesswide; A small open-cuthas been made on the mostprominent of these at a point 40 feet nort.her- ly fromthe adit. However, samplesacross these mineralized shears assayed: Molybdenite, -nil. Up-stream from the opex- cutthe granite is cut bymany shears, some of whichcontain films of molybdenite.Several samples were taken, but only oneassayed anything in molybdenite.This sample, taken across a shear at a point 30 feetup-stream from theopen-cut assayed:Molybdenite, 0.3 percent.

Inasmuch as the molybdenite is confined to the pink granite andmore locally to shear-planes within this granite, furtherprospecting should be confined to areas along the oon-

- 69 - tinuation of thisbelt, either south-westerly diagonally down the hillside, or north-easterly diagonally up the hillside. Inasmuch asthe slopes are covered by abundantoverburden, thecreek beds should be examinedwhere they cut the projected extension of this belt.

This property comprises the following min- STERLING (81) era1 claims:Sterling Nos. 1 to 2, in- elusive,White Rock Nos. 1 and 2 andWhite Pine Nos.- 1 to 5. Theseclaims were staked in 1938 and 1939 and are owned by AugustSmith, A. D. Coueffin, J. L. Mason and Barry Sawyer, all of Revelstoke, B. C. The writer examined thisproperty in August, 1939.

The property is 34 miles north of Revelstoke on the Big Bend Highway. The camp-cabin is on theeast side of thehigh- way at a point 700 feetsoutherly from the 34-mile Post. The workings,east of and approximately100 feet above the road, consist of three shortadits, open-cuts and strippings.

The hillside slopes gently upwards east of theroad and is coveredby large timber and thickunderbrush, so that pros- pecting,except in the creek-beds, is difficult.

The deposit consists of molybdenite,pyrrhotite andpy- ritedisseminated in bodies of massive,siliceous rock that areenclosed in quartz-muscovite schist and phyllite. The siliceousrock consists of abundant orthoclase and albite, and, lesser amounts of quartzand disseminated sulphides. It un- doubtedly represents the high-temperature replacement of the schist and, or phyllite, by fel-dspar and quartz. Remnants of whatappear to bemuscovite schist in the siliceous bodies, suggestthat quartz-muscovite schist was therock replaced.

The largestreplacement body, as exposed in No. 3 adit, has a width of 40 feet; its lengthcould not be determined. The secondlargest, as exposed in No. 2 adit,has an exposed width of approximately 35 feet. and may be the same body as that exposed in No. 3 adit. A thinnerreplacement bodyoc- curs approximately three-quarters of a mile northerly from thosedescribed above. This body ranges in width from 1 foot to 2 feet, sndhas a probablelength of 175 feet.

In all these bodies the sulphide content is small.^ Although the pyrrhotite is fairly evenly scattered, the molyb- denite is of erraticdistribution. Assays of thebest miner- alizationrange, in all thebodies, from: Molybdenite, nil - to a maximum of 0.6 per cent.

- 70 - The bodies of high-temperature.replacement will be re- ferred to in the following descriptions as silicified mater-, ial, or as silicifiedzones. It is to benoted that the term, silicifiedzone, refers in this instance to silicification by quartz,orthoclase and albite, and not,as is more usual,to silicification by quartz alone.

From a point that is 300 feet east of the cabin, the "No. 1" adit is drivennorth 32 degreeseast for 12 feet,then north 22 degreeseast for 36 feet,then north 32 degreeseast for 90 feetto the face. From theface, a raisehas been driv- eneasterly on an angle of 30degrees for 14 feet, then verti- cally for 11 feet to the top.

The only mineralization in this adit consists of dissem- inated pyrrhotite in the silicified rook near the portal; molybdeniteand other sulphides are absent.

Commencing at theportal, the adit passes through 48 feet of completelysilicified sediments, and then through 90 fee.t of black,lustrous phyllite to the face. Near theface the phyllite strikes north 55 degrees west and dips 25 degrees north-eastwardand at 60 feet from the portal it strikes about northand dips 25 degreeseastward. The silicifiedsediments near the portal strike north 25 degreeseast.and dip 25 de- greessouth-eastward. At 46 feet from theportal a strong fault,strike north.35 degrees west, dip 42 degreesnorth-east- ward, containing 8 to 12 inches of gouge, hasbeen,cut by the adit.

From. a point that is 60 feet in a direction north 84de- greeseast from the portal of the "No. l" adit, anopen-cut extends for 34 feet easterly to the portal of "No. 2" adit that is driven north 76 degrees east for 30 feet to the face. Commencing at its mouth, theopen-cut passes through 18 feet of overburden,then through 16 feet of massive,siliceous rock. This rockextends into the adit for 18feet fromthe portal;from thence to the face, the adit passes through sil- very,quartz-muscovite schist that strikes north-easterly and dips 25 degreesnorth-westward. At 18 feet, 22 feet and 24 feet fromthe mouth of theopen-cut, and from 10 feet to 2C feet from theportal, in the adit,, and, at theface, short discontinuouslenses of quartz,parallel with the walls of theworkings, have been exposed. These lenses, ranging from a fewinches to 18 inchesin thickness andfrom 1 foot to 8 feet in length,contain small amounts of molybdenite,pyrite, galenaand sphalerite. Simples taken across the lenses shew- ingthe best mineralization assayed from:Molybdenite,nil - to 0.6 percent.

- 71 - Stripping on thenorth-west bank of thecreek, at a point 50 feet north-easterly up-stream from the mouth of the open- cut,exposes a small4-inch patch of galena,pyrite and quartz in a 1arg.erarea of massive, siliceous rock.

"No. 3'' adit is drivenfrom the south-east bank of the same creekthat flows south-westerlypast the mouth of "No. 2" adit. The portal of No. 3 adit is 255 feet in a direction north 21 degreeseast from No. 2, and is drivennorth 30 de- greeseast for 70 feetto the face. At 52 feet from thepor- tal a branch-working is drivensouth 86 degreeswest for 22 feet.

Commencing at the portal,the No. 3 adit passes through carbonaceousphyllite for 28 feet, then to the face, through partly silicified quartz-muscovite schist that strikes north- easterlyand dips 40 degreesnorth-westward. At 50-, 58- and 66 feetfrom the portal, the main-adit cuts lenses of quartz and at 5-and 18 feet from thisworking the branch-working cuts similar lenses.These lenses range from 1 inchto 14 inches- inthickness andfrom 6 inches to 4 feetin length. Other than quartz,they contain only a little pyrite; no molybdepite was seen.Apart from the quartz lenses, the only other mineraliza- tion in this adit consists or' pyrrhotite,pyrite and 'small amountsof molybdenite disseminated through the siliceous re- placement-rock. Two checkerboardsamples taken across the face of theside-working assayed: Molybdenite, 0.4 percent. and 0.3 percent., respeoti.vely.

Seventy-five feet north-easterly up-stream from the third adit,stripping along the south-east side of the creek exposes a flat-lyinglens of quartz 14 inchesthick by 3 feetlong, whichcontains pyrite and some molybdenite. A sampletaken acrossthe Lens assayed: MoJ.ybdenite, 0.4 percent.

Showings of molybdeniteoutcrop approximately 500 feet up-streamfrom the hlghv(ay-crossing in the bed of a smallcreek, locally known asGalena Creek, that crosses the hlghway 0.6 miles northerly from the cabm.

The workings on these showings consist of combinedopen- cuts and strippings.

From a point 20 feet south of thecreek-bed, an open-out is driven 5 feet easterly to a 4-footface. This workingouts an irregular lens of barren quartz at the face and on the walls, whichdies out within an exposed length of 8 feet.. The iens cutssilvery, quartz-sericite schist that strikesnorth 35 de- greeswest and dips 40 degreessouth-westward. A zone of

- 72 - massive,silicified rock of irregular width extends from the northside of thiscut north-easterly across the creek. This zoneranges from 1 foot to 2 feet in thickness,strikes north- westand dips south-westward with the enclosing schists. The silicified rock consists of abundantorthoclase and albite, lesser amounts of quartz,and scattered pyrrhotite and molyb- denite. Threesamples taken of the best mineralization as- sayed:Molybdenite, and 0.5 percent.

The silicified rock is cut by two barrenquartz lenses; by one inthe open-cut first described,and by another at 43 feet north-easterly from the cut.

No. 2 working, 40 feet in a directionnorth 25 degrees east from No. I., is anirregularly blasted area that extends 4 feeteasterly and 12 feetnortherly. It exposesmolybdenite and pyrrhotite in the north-eastern extension of the silici- fiedrock. A sampletaken across 1 foot of thebest mineral.- izationassayed: Molybdenite, 0.5 per cent.

No. 3 working, 35 feetnortherly from No. 2, is a com- binedstripping and open-cut that extends 10 feet along the strike, and 4 feet down and 2 feet across the dip of the sili- cifiedrock andenclosing schist; the schist strikes north 25 degreeswest and dips 45 degreessouth-westward. This expo- sure is probablythe northern eA&ension of the silicified rock exposed in andbetween No. 1 and No. 2 workings.'Scattered molybdeniteoccurs in this exposure and a sampletaken across the2-foot thickness of the zoneassayed: Molybdenite, 0.2 percent.

Three trenches have been dug to the north of No. 3 work- ing, butnone of themexpose any molybdenite. The farthest trench, 100 feet northerly from No. 3, expo'ses 1 foot of the silicified rock, whichcontains only a little pyrrhotite.

As measuredbetween this working and No. 1, the zone of silicified rock appears to have a strike length of approximate- ly 175 feetand a thicknessranging from 1 to 2 feet.

The Allies molybdenite property com- ALLIES MOLYBDENITE prisesthe following mineral claims: PROPERTY(91) YBritain~rancs,Lpictoria,~clg,- Sunset and Panorama. The mvners are Archie Cowie, 355 NicolStreet, Nanaino,and associates of the same city. The writer examined thisproperty in July, 1939.

The. property is reachedby (1) motorroad for 15 miles from Nanaimo up the main south fork of the Nanaimo River to

- 73 - the Nanaimo Citywaterworks dam, at an elevation of 820 feet, thence ISJ (2)approximately 16 miles of trail up Jump Creek to the Jump Creek-Green.Riverdivide, and finally by trail up a steep hillside to the camp-cabin at an elevation of ap- proximately3,200 feet. With the exception of the last mile the trail is good,and with only a little cutting, quite suit- able for pack-horses; this trail is in the E. and X. Railway Belt and is keptopen as a fire trail by the Canadian Tacific Railway. The last mile to the cabin, althoughnot in a burnt- overarea, is coveredby numerous windfalls of largetimber, and because of' the frequency of these .falls it would beunwise to attemptto keep this part of the trail open.

The showings are on the steep northerly slopes of Mt. Buttle. For the most part this hillside is heavily wooded with large hemlock,but towards the top and in the vicinity of the showings,steep, rock canyons, inpart inaccessible, prevail. The upperparts of Mt. Euttle, between elevations of 4,100 and 4,900 feet are relatively openand the cover al- pine.

The depositconsists of singlequartz veins that carry small amounts of molybdenite. The veinsrange in width from 1 inchto 54 inches,and in exposedlength, from a few feet to anobserved maximum of 37 feet. They occurover an area that measures 6,500 feet in a north-south direction, by 1,800 feet in an east-west direction(Fig. 7). Samplestaken by the writ- er frommineralized quartz veins assayed from: Molybdenite, trace to 0.4 percent.

The quartzveins cut granitic rocks that range from quartz- dioritethrough granodiori.te to granite in composition. Show- ings Nos. 1 to 16, inclusive,are in quartz-diorite; Nos. 17 and18 ingranodiorite, andNos. 22 and 23 in granite; Nos. 19 to 21 arein pyritized greenstone.

Quartz-diorite is themost abundant rock type, and ex- tends'southerly from the cabin for approxlmately 3,500 feet, and easterly for a minimum distance of 1,000feet. Outcrops wereseen on the trail forapproximately one mile northerly from the camp-cabin; traverses were not made to the east. The quartz-diorite,as exposed on theAllj-es, probably repre sents the south-westerly part of a large mass that extends north-easterly.

A section of granodiorite,approximately 500 feet wide, was observed in a canyon at a pointtowards the southern mar- gin of the area of quartz-diorite; the actual contact with the quartz-diorite was not seen.

- 74 - Andesiticgreenstone occurs on the east and west peaks of Buttle Mountain,and extends northerly down to a bench 500 feet below; this bench is 800 feet above and 2,500feet south- erly from the camp-cabin.

Granitedykes cut the greenstone in many places, andex- tendfrom the bench south-easterly over the pass between the east and westpeaks of Buttle Mountain. These dykes strike north-westerly and range in width from 25 feet to 750 feet.

The followingparagraphs form a detailed description of the showings, theirposition is givenon Fig. 7.

No. 1 is a cutthat has been drivensouth 23 degreesexst for 17 feet.This cut exposes a quartzvein that strikes south 25 degreeseast, dips 80 degrees north-eastward and ranges from 18 to 20 inchesin width. The vein is mostlymilky quartz and containsonly a small amount of sulphides. The sulphides includepatches of pyrite, a little chalcopyrite and a little molybdenite;the molybdenite occurs as rosettes from 1/4 to 1/2 aninch in diameter.

The continuation of this vein is seen 20 feetnorth-west- erlyin the bed of thecreek, where it is 2 feetwide and ex- posed for 14 feet. Onlyone smallpatch of molybdenite was seen, 5 incheslong, and 3/4 of an inch at its widestpart.

No. 2 is a water-hole 5 feetsquare by one footdeep; dirt in the bottomobscured the vein reported to be there. Material on the dump consists of quartzcontaining pyrite.and small amountsof molybdenite intimately associated with the pyrite.

Xo. 3 is a trench 12 feet long that exposesan 18-inch widequartz vein for 3 feet. THe quartzcontains pyrite and a few molybdenite rosettes.

No. 4 is anirregularly shaped water-filled pit approxi.- mately 5 feet in diameter by 2 feetdeep;quartz boulders of mineralization similar tothe above are scattered around it.

No. 5 is a water-filledpit that did not reach bed-rock.

No. 6 is a shaftfilled with water, and is reportedto beapproximately 50 feetdeep. A veincontaining traces of suiphides in the quartz'and ranging in width from 15 to 18 inches, extends from thenorth-west corner oE the shaft north- westerly across the rock-floor of the canyon for a distance of 15 feet. A pickedsample from the dump assayed: Molybdenite,

- 75 - Fig. 7. Allies molybdenite property: pace, compass Bnd barometer survey. 1.5per cent. Several other veins were .seen in the floor of the canyondown-stream and upstream from theshaft. These veinsrange from one inch to 10 inchesin width and contain traces of molybdenite;the position and strike of these ve:ins, showings Nos. 7 to 16,inclusive, are with the exception of No. 10, shown onFig. 7.

No. 10 is an open-cut thathas been driven for 18 feet at south 39 degreeseast to a face 10 feethigh. The veinin the face is 4 feet wideand contains patches of pyrite and small amounts of molybdenite. A sample takenacross the full width of thevein assayed: Molybdenite, 0.4 percent.

Nos.17 and 18consist of narrow,relatively barren quartz veins in a rockycanyon; they range from 2 to 10 inches wide and contain traces of' molybdenite.

Nos. 19 to 21 aresmall open-cuts that expose pyritized greenstone;quartz veins and molybdenite are absent.

Nos.22 is anopen-cut that has beendriven north 45 de- grees east for 15 feet into the north-east wall of a canyoc. It exposes two shearsin the Face that strikenorth 30 degrees west and dip from 60 degrees to 75 degreesnorth-eastward, but converge above theworking. The shears containquartz with much more pyritethan is common in the previously described veins, and small amounts of shearedmolybdenite. The vein material is lenticular and ranges in width from a knife-edge to 6 inches;there is no increasein width after the shears converge. In this same canyon there are two othershears that out-crop for only a few feet along their strike andcon- tainsmall amounts of sulphide.

The adit, 80 feet below the cabin, driven in a directim solith 12 degreeseast for 28 feetfollows a quartzvein 54 incheswide that contains a small amount of pyrite, pyrrhotite and a trace of molybdenite. This veinhas been faultedwithin 5 feet of the face.

No. 23 consists of two parallelveins, one 6 inches'and theother 10 inches wide. The quartzcontains traces of su:L- phides.

- 76 - ANNOTATED BIBLIOGRAPHY.

Bureau of Mines,Dept. of Minesand Resources, Canada, (Mar. 1939).Molybdenite in 1938.

Butler, B. S. and Vanderwilt, J. W. (1933) The Climax Molyb- denum Deposit,Colorado, U. S. Geol. Surv. Bull. 846-C.

Dana, E. S. (1922)Text-book of Mineralom for properties of molybdenum min'erals.

Dolmage, V. (1922)Coast and Islands of British Columbia be- tweenDouglas Channel and the AlaskanBoundary. Geol. Sum. Canada, Sum. Rept.Part A.

Drysdale,Chas. W. (1915)Notes on the Geology of the "Molly" Molybdenite Mine, LostCreek, Nelson, Id. D., Trans. Can. Inst. Min. Met.Vol. XVIII.

Jhmons, W. H. (1935)Origin of Certain Systems of Ore-bearing Fractures, Trans. Am. Inst. Min. andMet., Vol. 115, pp. 9-35.

.. (1938)Diatremes and Certain Ore-bearing Pipes, T. P 891, Am. Inst. "in. and Met.,pp. 1-15.

Hanson,George (1935) Portland Canal Area, British Columbia, Geo. Surv.Canada, Mem. 175.

Bess, F. L. (1923)Ilsemannite at Ouray,Utah, U. S. Geol. Surv. Bull. 750-A.

.. (1924) Molybdenum Deposits, U. S. Geol.Surv., Bull. 761..

Lilley, E. R. (1936) Economic Geology of MineralDeposits, Henry Holtand Co., New York, pp.438- 442.

Lindgren, 'Naldemar (1933)Mineral Deposits, McGraw-Hill Book Co., New York,pp. 769-771.

McConnell, R. G. (1913)Portion of Portland Canal andSkeena MiningDivision, Skeena District, B. C., Geol. Surv., Canada, Mem. 32.

Perry, V. D. (1933)Applied Geology at Cananea,Sonora, ". Lind- gren, Volume, Am. Inst., Min. a;; Mat., pp. 701-705.

- 77 - Phillips, \'I. H. (1935) Molybdenite--Modern.Usesof Non-fer= Metals; Am. Inst. Min. and Met. Eng.,pp. 217-220. Rastall, R. H. (1922) Molybdenum Ores, ImperialInstitute, London.

Ridgway, R. H. and Davis, H. W. (1939)Minerals Yearbook, Bureau of Mines;pp. 615-620.

Vanderwilt, J. W. (1933)Molybdenite Deposits - Ore Deposits of the WesternStates; Am. Inst. Min. and Met. Eng., iindgren Volume pp.570-573.

. . (1938) Geology of the "Quests'! MolybdeniteDeposit, ?', County, New Mexico,Colorado ScientificSociety.

Walker, J. P. (1934)Geology and Mineral Deposits of .the 2:- Map-Area, BritishCol., Geol. Surv. Canada, Mem. 172.

Walker, T. L. (.1911) Molybdenum Ores of Canada,Mines Bran.ch Pub. No. 93,Dept. of Mines,Canada.

Wilmot, V. L. Eardley - (1925) Molybdenum, MinesBranch, Pub. No. 592,Dept. of Mines,Canada.

- 7% - APPENDIX.

INDEX OF KXOWN OCCURRENCES Or" MOLYBDENITE IN BRITIS8 COLUMBIA

(Occurrences marked with an asterisk described in this bulletin.)

AshcroftArea

No. as on KeyMap (frontispiece)

1 Martelproperty*

16 miles south of Ashcrof't;narrow quartz veins insediments; extensive underground workings andopen-cuts.'

Reference: (7) p. 18.

2 Tamarack group

Near Gnawed Mt., HighlandValley, 20 milessouth- east of Ashcroft:Nolybdenite associated in small amounts with chalcopyrite in joint planes ingranitic rocks. Twenty-foot shaft,pits and stripping. Oae ton of oreshipped.

References: (2) p.52; (1) p.32.

BellaCoola Area

3 Heino, A., prospect of

On mainlandnear Hunter Island, near Ocean Falls. Flakemolybdenite in quartz stringers.

Reference: (3) p.124.

4 Merkel,prospect of

Near Bagensborg.

Reference> (6).

5 Schonovitchprospect. Near Namu. Reference: (2). - 79 - Chilko Lake Area

6 Franklin Arm, Chilkc Lake.

Occurrencereported by R. P. Bishop of Wic- toria and possibly that referred to in the reference.

Reference: (5) 1917,p.132.

Cranbrcck Area

7 St.Idary's River, forks of

Molybdenum associated with bismuth.

Beference: (5) 1917, p. 180.

8 Sunnyside-Sunsetclaims I In St. Mary'spass, 20 miles north-west of Marysvillestation. Fine-grained molybd.en- ite in quartz veins that occurin quartzite.

Reference:(2) p. 5G.

Ft. FraserArea

9 Stel 1 a group *

NearEndako, south-westof Fraser Lake. Ribbonmolybdenite in quartz veins. Open- cuts,incline and adit.

Reference: (7) p. 23

Grand ForksArea

10 Franklin Camp

ldolybdeniteassociated with chalcopyrite in shear-zonesin granodiorite - no deveiopment.

Reference: (1) 49.p.

- eo - 11 -Midas group* Near Farron,east of Cascadeand Grand Forks on theKettle Valley Railway. Molybdenite disseminatedin syenite and innarrow quartz veins.Several short adits and an incline.

Reference:(7) p.33.

12 Thomson estate,property of*

West, of Lafferty,near Cascade. Molybdenitedisseminated in quartz-feldspar gneiss.Strippings.

Reference:(7) 39p.

Greenwood Area

13 Carmi mine

Near Carmi station,north of Greenwood. Molybdeniteoccurs with copperores, no de- velopment for molybdenite.

Reference:(1) p.49.

14 Younkin prospectnear Bridesville.

7 miles from Bridesville on the Camp McXinney road.Flake molybdenite in a 1-footquartz veins. A small shafthas been sunk on the vein.

Referenee: (3) p.127.

15 Younkin prospectnear Camp McKinney

5 milesnorth-east of Camp McKinney. 18- inch seam of mic'aceousmolybdenite.

Reference:(3) p. 127;

Hazelton Area

16 BlackPrince and 'Uonder

At head of Mud Creek,which flows eastward into Bulkley River about 10 miles above New

- 81 - Hazelton. ' polybdenite and wolframite BE:- sooiatedwith pyrite, chalcopyritg and galena.

Reference:(5) 1914, p. 205.

17 New Haeelton Gold-Cobalt Mines

On Rocher D&boulB Xt.., south of Hazeltor.. Molybdeniteoccurs in veins of cobalt su.1- phidesin granodiorite. Extensive adits, shafts and pits. Shipped 27 tons yielding 430 lbs. molybdenite,in 1917 and 1918.

Reference:(5) 1917, p. 103.

18 Thom prospect

On Suskwa River 4 miles from the Hazelton- Manson Creek trail and27 miles 'east of Hazelton.

Reference: (6)

Kamloops Area

19 Antic1 imax*

17 1./2 milesnorth-west of Little Fort (ldt. Olie.).which is 60 miles north of Kamloops. Quartzlens in graniticrocks. Open-cuts and strippings.

Reference:(7) p. 42.

20 Beresford, South

Prospect at South Beresford near.Knutsford.

Reference: (6)

21 Xenallan *

An old prospect 4 miles south of Westwold. Molybdenite disseminated with sulphides in lime-garnetzones in limestone. Numerous; strippings,open-cuts and short inclines.

Reference: (7) p. 57

- 82 - 22 Naismithprospect

Near2ed Lake, 30 milesnorth-west of Kam- loops.

Reference: (6)

23 Pearscnprospect

Near Stump Lake.

Reference: (6).

24 SandsCreek claims *

On SandsCreek, which flows intothe Clear- waterRiver near Clearwater Station. An 18- inch quartz-molybdenite vein in granitic rock. Stripping.

Reference: (7) p. 65.

Lac la Hache-

25 Boss Mt. *

Property of the Consolidated Miningand Smelting Co. 40 milesnorth-east of Lac la Hache.Breccia-pipe in quartz-diorite sealed by quartz andmolybdenite; also sev- era1 small quartz-molybdeniteveins. 3 shortadits, 1 shaft, severalopen-cuts. 1000lbs. of oreyielding 350 lbs. molyb- deniteshipped.

Reference: (7) p. 68.

LardeauArea

26 Copper Chief

On west side of TroutCreek, near Trout Lake. A small veinfollowing a diorite dyke.Several open-cuts.

Reference: (5) 1917, p. 191.

- 83 - 27 and -Fossclaims, Duncan River.

North of KootenayLake. Molybdenite in quartzveins that cut mica schist. Numer- ous open-cuts.

Reference: (1) p. 31.~

Lillooet Area

28 Croteauprospect

Approximately20 miles south of Lillooet, nearthe Index Molybdenite property.

Reference: (6)

29 "Index Mine On TexasCreek, 15 milessouth-west of Lil- looet.Fracture-zone in granitemineralized with molybdenite.Several pits, trenches and adits.

References: (1) p. 34; (4) Summ. 1916, p. 54; (5)1916, p. 272.

Lower Mainland Coastand Coastal Islands Area

30 Bentham prospect *

On Haslam Lake, nearPowell River. Molyb- denitein quartz stringers in joints in granite.Strippings.

Reference: (7) p. 88

31 Bower, Gideon,prospect of

1 1/2 milesfrom shore of north arm of Bur- rard Inlet andopposite Croker Island.

Reference: (2) p. 52.

32 Britannia Mine. On Howe Sound.'Molybdenite sometimes asso- ciated with chalcopyrite in shear-zones. Reference: (1) p. 52.

- 04 - 33 Clowham Lake, prospectnear.

Near SecheltInlet. Vague reports of show- ings.

Reference: (3) p.125.

3 4 CortezIsland. 34

Occurrenceeast of Carrington Bay onCor- tezIsland. Small quantities of molybden- ite in quartz veins ingranite.

Reference: (4) 1886, 'p. 23-B.

3 5 Cypress35 Creek, claims near.

On BurrardInlet. Reported high return in molybdenum.

Reference: (5) p. K-301.

36 __Gem property Near Gordon PashaLake, near Pwell River.

Reference: (6).

3 7 Grayson-Otto 37 prospect.

On Knight Inlet.Flake molybdenite in nar- row quartz veins.

Reference:(3) p. 125.

38 JervisInlet. *

Prospectabove Jervis Inlet and opposite PrincessLouisa Arm: Scatteredrosettes and patches ofmolybdenite in granite.

Reference:(7) p. 93

39 Lucky Swede

'Prospect ownedby Perry Hanson on Sonoro Island.

Reference: (6).

- E5 - 40 Lynn Creek

Molybdeniteassociated with sulphides and calcite.Several adits.

Reference: (1) p. 52.

41 Ottawa Cen&r&

QuadraIsland, one-half mile west of Bald Point. A littlemolybdenite in limestone.

Reference:(5) 1922, p.241.

42 Pleasant Lake, prospectnear.

5 1/2 milessouth of JervisInlet. Flake molybdenitein quartz and granite.

Reference: (3) p. L25.

43 PowellLake.

Prospect on shores.Fine-grained molybden- ite inquartz.

Reference:(1) p. 50,

44 "Soule claims

Nearhead of the North Arm Burrard Inlet, 2 miles up the valley of a smallstream. Mclybdenitein a 14-inchquartz vein' in granite.

Reference: (2) p. 52.

45 Texada Island.

Associated with chalcopyrite in many of t:he old coppermines.

Reference: (2) p. 50.

Merritt Area 46 CopperKing Mine. NearMamette Lake, north of Merritt. kssoci- atedwith an excess of chalcopyrite in al-

- e6 - teredgranite.

47 Bourne prospect.

NearNakusp, on UpperArrow Lake. Molybdenite in quartz veins. Numerous open-cuts.

Reference: (1) p. 49.

NelsonArea

4a SilverFree

on QuartzCreek, west of Ymir. Molybdenite with sulphides in vein in monzonite.

Reference: (1) p. 50.

49 GrayCreek prospect *

Bast side of KootenayLake. 3-foot quartz veinin granite. Adit, 175 feetlong, along the vein.

Reference: (7) p. 49.

50 Little Keen*

On SheepCreek, south of Salmo, owned by J. Sapples.Molybdenite in a lime-silicate zone. Severalopen-cuts and strippings.

Reference: (7) p. 97.

51 Lucky Boy

South.side of SheepCreek, near Salmo. A. small amount of molybdenite associated with pyrite,sphalerite andgalena.

Reference: (5) 1926, p. 278.

- a7 . 52 mine *

On LostCreek, south of Salmo. Molybdenite disseminated and in seams in granite and pegmatite. 202 tonsshipped,. 10 tons MoSz recovered.

References: (1) p. 33; (7) p. 102

53

Nearhead of southfork of FryCreek, east side of KootenayLake.

Reference:(5) 1926, p. 260.

54 prospectTier

NearRoseberry, 3 milesup Wilson Creek. Faultedquartz vein, 4 feet wide, showing rosettes and flakes of molybdenite.

References: (3) p. 128 and (6)

NeuJ Westminster Area

55 Dupres-Knight,prospect

On southside of FraserRiver, near Chem View. Molybdeniteoccurring in lenses of quartz in granite.

Reference: (3) p. 126.

56 hpress group

4 miles north of Agassiz.Molybdenite is associated with magnetite and sulphides in. lime-silicatezone. Extensive workings for copper,no molybdenite saved.

Reference:(5) 1917, p. 286.

57 Hicks discovery

Occurrence on Hurling Mt., and 7 miles east of AgassizStation.

Reference: (5) 1917, p. 285.

- 88 - 58 Lindemac 58 prospect.

On mountain west of north end Chilliwack Lake.

Reference: (3j p. 126.

59 3. L. M. group

On Silver Creek, east side of BarrisonLake. Molybdeniteoccurs in narrow quartz veins in granitic rocks.

Reference : ( 6).

60 Jamiesonprospect

On northfork of Spuzzum Creek.Molybdenite reported to occur with free gold.

Reference: (1) p. 48.

61 Last Chance group

On south side of Hurling's Mt., 7 miles east of Agassiz.Molybdenite occurs with other sulphides in metamorphosed limestone.

Reference: (5) 1917, p. K-289.

62 Margaretproperty *

B. C. Molybdenite Co. property on Boise (Canon).Creek, north of Pitt Lake. Molyb- deniteoccurs in one short,2-foot shear- zoneand inseveral narrow quartz veins, all inquartz-diorite. Workings consist of 1 short adit and severalopen-cuts and strip- pings.

Reference: (7) p. 109.

63 Dominion property

west of Iago on the Coquihalla River.

Reference: (6).

- 89 - 64 -Old Rainbow claim

On Twenty-two MileCreek, on theSlcagit River,south of Hope.

Reference:. (1) p.48.

65 StaveRivergroup

Wear Upper Stave River, about 6 miles north- west of the head of Stave Lake.Molybdenite occurs in silicified shears in granitic rook. B Reference: (5) lSf, p. K-288

66 PaulgroupSt.

On westside of Pitt Lake. A 4-fOOtmolyb- denite vein that had been uncovered for 400 feet.

Reference: (5) 1901,'~.1121.

Penticton Area

67 Golcondamine

One milewest and 1,100 feet above town of Olalla. Fine-grainedmolybdenite and chalco- pyritedisseminated in pyroxenite; 4390 lbs. of 17.11% molybdeniteshipped to Ottawa iu 1917. Workings consistof adits, shaft, ;and strippings.

Reference: (1) p.43.

68 West68Summerland, prospectnear.

Molybdenite in quartz vein at contact of granite aGd schist.Stripping and trenching, 246 lbs. of 0.3%material shipped.

Reference: (1) p.51.

- 90 - Portlmd CanalArea

59 Caribougroup 59

On Lime Creekon south shore of Alice Arm. Molybdeqiteoccurs in a stockwork of inter- lacingquartz stringers in granite.

References:(3) p. 124; (5) 1930,p.86

70 Fitzgeraldprospect

On StrohnCreek, nearMeziadin Lake. Molybdenitein a quartz vein that ranges from 3 to 5 feet wide, ingranite.

References: (5) 1917, p. F-68; (6)

71 Eaahti, John, prospect of

Near Stewart.

Reference: (6).

72 Mmoth Mine

On ObservatoryInlet. Fine-grained molyb- denite in quartz veins.

Reference: (1) p. 51

73 Molly B

East side ofBear River, one-half mile from tidewater and across the river from town of Stewart.Molybdenite with other sulphides associatedwith a 10-foot zone of line sili- cates in altered greenstone.

Re.?erence: (5) 1918, p.. X-76

74 Tidewater Molybdenum group*

On north side of Alice Arm, 4 milesfrom its head.Molybdenite occurs in numerous quartzlenses in sediments and andesitic greenstones.Extensive underground workings, 383 tons of oreshipped. Reference: (7) p. 116.

- 91 - Princeton Area

75 AshnolaCreek

Prospect 5 miles up thecreek. Flake mol.yb- denite in quartz.

Reference: (3) 127.p.

75 Galarneauprospect

On Champion Creek,south-west of Tulameen. Low-grade ore in a zone 8 to 12 feet wide).

Reference: (3) p. 127.

77 GraniteCreek, occurrence on

One-halfmile up Granite Creek, 8 miloseast of Tulameen.

Reference: (3) p. 127

78 Independence camp

On ColdwaterRiver. Molybdenite with chal- copyritein granite porphyry. Noticed in mining for copper.

Reference: (1) p. 51.

79 Twenty-one79 MileCreek, prospect near

Near Hedley.Molybdenite sparingly dis- tributedthrough granitic rocks.

Reference: (1) p: 51.

Revelstoke Area

80 L. H. group *

Near Malakwa, south-westof Revelstoke. Molybdenitein shear-zone in granite. 1 short adit and strippings.

Reference:(7) p. 132.

- 92 - 81 Sterling group *

35 miles north of Revelstoke,. on Big Bend highway.Molybdenite insilicified zone in schist.Several short adits.

Reference: (7) 'p. 138.

RosslandArea

82 Gian-t mine "

At Rossland.Fine-grained molybdenite as- sociated with chalcopyrite along fracture planesin granite.

Reference:(1) p.52.

83 Ros.sland camp

Molybdeniteseen in several of thegold- copper' mines.

References: (1) p. 46; (2) p. 54.

Terrace Ar,ea

8 4 Bradle84 Bane group

One mile east of SkeenaRiver 2nd 5 miles north-east of Usk. Veinlets of pyritewith a little .galena and molybdenite in tuff.

Reference: (4).Mem. 212, p. 36.

85 B. X.

On Kleanza Creek, 5 milesfrom its mouth, and 8 miles from Usk. Molybdeniteoccurs in a +foot quartz vein in greensto'ne.

Reference:(5) 1928, p. C-146.

86 &a andNorth Starclaims

Near head of Kitamaat Arm.

Reference: (4) 1899, p. 656.

- 93 - 87 Eurekaclaim

On Thornhill Mt. east; of Lakelse Lake. Owned by J. A. Michaud. Rosettes of molyb- denite associ.ated with smallpegmatite dykes in granite.

Reference:(4) Mem. 205,p. 33.

88 KitsumgallumLake.

Occurrence 5 miles north of the lake. Molybdeniteoccurs in reddishquartz.

Reference: (3) p. 125..

89 Molybdenum group

NearZimacord River.Molybdenite in quartz veinlets in dioritedykes.

Reference: (1) 51.p.

90 NicholsonCreek Mining Corporation

Between Lowrie and NicholsonCreeks, near Usk. Molybdenite in small quantitiesin quartz-pyrite veins in fractured grano-diorite. Extensive underground workings.

References:(5) 1928, p. 145; 1935, pp. C-7-C-10.

Vancouver Island Area

91 Alliesgroup *

On Buttlemountain, 30 miles south-east of Nanaimo: Flakeand rosette molybdenite in graniticrocks. Several open-cuts, 2 short aditsand 1 shaft.

Reference: (7) p, 146.

92 -Come& group

On Cottonwood Creek, north of' CowichanLake.

Reference: (6).

- 94 - 93 Fanny Bay

On northpassage in Fanny Bay, east side of Vancouver Island.Molybdenite in narrow quartzveins in granite.

References: (lj p. 50; (4) Mem. 23,p.141.

94 Goodspeed, prospect of

Near Port Hardy.

Reference: (6).

95 Sharpe,prospect of

NearTofino, west coast Vancouver Island.

Reference: (6).

VernonArea

96 Armstrong camp

Aberdeen Mt.. near Vernon. Associated with galena in quartzvein; no development for molybdenite.

Reference: (1) p. 52.

97 Bertram,prospect of

NearVernon.

Reference: (6).

98 Eagleprospect

Near BeaulieuLake, 30 miles south of ?Nes two Id.

Reference: (6).

- 95 -

. eReferences in Appendix

1.' Wilmot, V: L. Eardley - (1925) Molybdenum, MinesBranch, Pub. No. 552,Dept. of Mines, Canada.

2. Walker, T. L. (1911) Molybdenum Ores or' Canada,Mines Branch,Pub. No. 53, Dept. of Mines,Canada.

3. MunitionsResources Commission,.Canada (1520).

4. GeologicalSurvey of Canada, (Mem. - Memoir; Summ. - Sura- mary Report).

5. Annual ReportsMinister of Mines, British Columbia.

6. Privateinformation, Dept. of Mines, Victoria.

7. See description in text of this report.

- 26 -