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47 64©00 Ministry of MARGINAL NOTES Northern Development and Mines Introduction Ontario The map area (186 km2} consists of Cassels and Riddell Town ships and is located 5 km east of Temagami in the District of Nipissing. It is bounded by Latitudes 46tl58©25"N and 47008©00"N Mines and Minerals Division and Longitudes 79038©00"W and 79045©20"W. Ontario Geological Survey Road access to the area is limited to two gravel roads which lead from Highway 11 to Cassels Lake. One is in Cassels Town MAP P.3074 (Revised) ship and provides access to Temagami, the other is Lowell Lake Road in Riddell Township. Road access to the northern part of Geological Series-Preliminary Map Cassels Township is via a four-wheel drive road along a major power transmission line. The Ontario Northland Railway cuts across the southwestern corner of Riddell Township and provides some additional walking PRECAMBRIAN GEOLOGY access. Cassels, Rabitt, Pishabo, and Net Lakes provide water access to most other parts of the map area. RIDDELL TOWNSHIP DISTRICT OF NIPISSING Mineral Exploration Scale 1:15840 The information reported here, if not stated otherwise, is taken from assessment files, Resident Geologist Office, Cobalt, Ontario. Mil* 5* o . v. Mile

Mineral exploration for silver and cobalt in Cassels Township Metres 100 o 0.2 (M 0.6 0.8 1 Kilometre dates from 1900 with shaft sinking and trenching by Temagami- ^ i ^r- l l © Lorrain Mining Limited in the Sauve Lake area, and Temagami- Cobalt Mining Company Limited in the Gosselin .Lake area. During this period a smaltite-bearing vein was discovered along the NTS Reference: 31 L/13, 31 M/4 Ontario Northland Railway in Riddell Township. ODM-GSC Aeromagnetic Maps: 1490G, 1491G Base metal exploration by Hermes Mines Limited in 1945 was ODM Geological Compilation Map: 2361 centred on the Boot Bay and Outlet Bay areas of Net Lake in Cassels Township. This work consisted of ten diamond-drill holes (801 m) at three locations. Exploration for silver and cobalt near Gosselin Lake by E. Queen©s Printer for Ontario, 1988 deCamp in 1954 resulted in trenching and follow-up drilling of five Printed in Ontario, Canada holes for a total length of 365 m. Parts of this publication may be quoted if credit is Base metal exploration during the 1950s consisted of several given and the material is properly referenced. diamond drill programs on known sulphide occurrences in Cassels Township. Five holes (178 m) were drilled by A. Brochu in 1955 on This map is published with the permission of V.G. the Hermes copper occurrence just east of Outlet Bay, and six Milne, Director, Ontario Geological Survey. holes for a total of 151 m were put down by B. Riopel in 1955 on an occurrence on a peninsula of Cassels Lake. Ground geophysical surveys and drilling (one hole, 183m) were carried out by Geoscientific Prospectors Limited in 1956 .*~3 fA7© fV* adjacent to Obashkong Lake. Twenty trenches and eleven drill holes for a total of 445 m were put down by New Athona Mines Limited in an area northeast of Outlet Bay. A ground geophysical survey was carried out in 1962. The Gosselin silver-copper property near Gosselin Lake was extensively explored by Aldage Mines Limited in 1963. The work consisted of geological and geophysical surveys, prospecting, trenching, and sampling and subsequent diamond drilling of ten holes for a total of 331 m. Soil geochemical and geophysical surveys on claims adjacent to the Gosselin property were completed in 1964 by D. Burton. Other work in 1964 consisted of 3 diamond drillholes (107 m) by E. Burke on a galena showing at Boulton Lake in Riddell Township. Airborne geophysical surveys were carried out by Keevil Min ing Group in 1965 over the western half of Cassels Township. Later, follow-up geophysical surveys and diamond drilling were carried out by Wabi Mining Syndicate in 1968 on the former New Alhona Property, northeast bf Outlet Bay. The following year. Rio Tinto Canadian Exploration Limited carried out geological and geophysical surveys and diamond drilling (five holes totalling 605 m) on the same property. Elsewhere in the area, a soil LOCATION MAP Scale: 1:1 584 000 or 1 inch to 25 miles geochemical survey and diamond drilling of nine holes (554 m) J ©N\ were completed in 1969 by Silver Leader Mines Limited on a property to tne east of Bogie Lake. Ground geophysical surveys, 7 U*, by Metron Exploration Limited in the southwestern corner of Rid dell Township, and by Lake Beaverhouse Mines Limited in the LEGEND** SYMBOLS Bool Bay area of Cassels Township, were completed between Geological 1970 and 1971. PHANEROZOIC Glacial striae boundary, observed Geological surveys, trenching, and 3 diamond-drill holes CENOZOIC (705 m) were completed by Goldex Mines Limited in 1973 near a QUATERNARY Small bedrock Geological chalcopyrite showing along the Gowganda Formation Nipissing outcrop boundary, position Diabase contact at Boulton Lake in Riddell Township. PLEISTOCENE AND RECENT Sand, gravel, clay, and swamp deposits interpreted Elsewhere in Riddell Township several trenches were put Area of bedrock down during 1974 in Archean mafic metavolcanics west of Lower outcrop Structural lineaments Twin Lake by G. Vaillancourt. UNCONFORMITY Geological mapping by Canadian Nickel Company Limited in PRECAMBRIAN Bedding, top Shear zone, with dtp 1974, and ground geophysical surveys by Hollinger Mines Limited unknown; (inclined, and St. Joseph Exploration Limited in 1978, were carried out MIDDLE PROTEROZOIC vertical) northeast of Outlet Bay in Cassels Township. OLIVINE DIABASE DIKES (Sudbury Type) Jointing; (horizontal, inclined, vertical) Bedding, top (arrow) Unsubdividedc from grain gradation; General Geology Coarse-grained olivine diabase (inclined, vertical- Anticline, syncline Fine-grained olivine diabase overturned) The first geological mapping of the area was done on a reconnais Anticlinal, synclinal sance scale by Bell (1892), Barlow (1899), Coleman (1900), Miller folds with plunge (1901), Burrows (1909), Miller and Knight (1911), Knight (1920), INTRUSIVE CONTACT Bedding, top (arrow) and Todd (1925). Subsequent and more detailed mapping in areas from crossbedding; adjacent to Cassels and Riddell Townships were carried out by EARLY PROTEROZOIC (inclined, vertical, Drag fold with Mcilwaine (1970), Bennett (1978), and Fyon and Crockett (1986). MAFIC INTRUSIVE ROCKS overturned) plunge Underlying the map area are Archean supracrustal and plu NIPISSING DIABASE tonic rocks, Early Proterozoic supracrustal and intrusive rocks, and Lava flow; top S-folds, M-folds, and Middle Proterozoic (Keweenawan) dikes. 9a Quartz diabase, gabbro (arrow) from pillows Z-folds with plunge shape and packing Archean rocks which underlie the northwestern part of the 9b Coarse-grained, varied textured quartz gabbro map area consist of a 8 km long, northeast-trending metavolcanic 9c Leucocratic quartz gabbro Diamond drillhole Schistosity; location belt intruded by Archean felsic and mafic plutonic rocks. The 9d Granophyre-quartz monzonite metavolcanic belt is an eastward extension of the Temagami (horizontal, inclined, Greenstone Belt which has been subdivided into a Younger Vol 9e Hydrothermally altered diabase vertical) Shaft; depth in canic Complex (YVC) and Older Volcanic Complex (OVC) (Fyon metres and Crockett 1986). Archean metavolcanics in Cassels Township INTRUSIVE CONTACT Foliation; (horizontal, are part of the YVC, whereas those found in the southwestern inclined, vertical) Exploration trenching corner of Riddell Township are part of the OVC. The oldest rocks HURONIAN SUPERGROUP COBALT GROUP Paleocurrent in the Net Lake area (Cassels Township) are pillowed to massive .Au Mineral occurrence mafic flows of the Arsenic Lake formation (Fyon and Crockett LORRAIN FORMATION direction as 1986) which are found along the northern limb of the Lake suggested by ripple Mineral occurrence Tetapaga Syncline. Overlying these are mainly intermediate to Unsubdividedc marks and felsic pyroclastic rocks such as tuffs, lapilli tuffs, lapillistone with crossbeds reported but exact 8a Green arkose with minor feldspathic lith- location uncertain minor mafic to intermediate, and intermediate to felsic flows which wacke pebbles The youngest rocks are correspond to the Link Lake Formation. 8b Micaceous, green lithic arkose Lineation with pillowed to massive mafic flows of the Upper Formation which plunge Sample location, see occupy the core of the syncline. Clastic rocks of the Turtle Lake Bc Micaceous, red hematized arkose Tables 1 and 2 for 8d Fine-grained, micaceous, green arkose inter values Formation which normally overlie the Link Lake Formation further D2 lineation to the west, appear to be absent in Cassels Township. bedded in coarse-grained, lithic arkose Rocks of the Older Volcanic Complex outcrop west of Lower 8e Thin siltstone interbeds in medium bedded green Gravel pit Twin Lake in southwestern Riddell Township and consist of well arkose foliated massive and pillowed mafic flows and minor pyroclastic 8f Contact metamorphic rocks rocks. 8g Rippled, cross-bedded, and graded beds A body of coarse-grained gabbro, pyroxenite, amphibolite, and 8h Hematized minor pillowed mafic volcanic rocks represents a mafic volcanic- Plutonic remnant in the Archean granitic terrain west of Pishabo 8i Laminated bedded K0.3 to 1 cm) Lake in Cassels Township. 8} Thinly bedded (1 to 10 cm) PROPERTIES, MINERAL DEPOSITS Felsic plutonic rocks consist of coarse-grained, massive, 8k Medium bedded (10 to 30 cm) leucocratic granites with minor granodiorite and trondhjemite Bl Thickly bedded (30 to 100 cm) PROPERTIES: varieties. A contaminated border zone is locally present and ex 1. Manderstrom, W., property (includes Brochu, Hermes, and hibits up to 50% mafic xenoliths, CONFORMABLE CONTACT (LOCAL ANGULAR UNCONFORMITY) Mandy occurrences) North and northwest-trending mafic dikes commonly intrude GOWGANDA FORMATION 2. Novamin Resources Incorporated property (New Athona) the felsic plutonic rocks. These consist of diabase and minor Firstbrook Member 3. Plexman, E., property (Gosselin occurrence) lamprophyre and plagioclase porphyritic diabase which were re 4. Quebec Cobalt and Exploration Limited property ferred to as Matachewan Dikes by Todd (1925). Unsubdividedc (Temagami-Lonaine occurrence) Early Proterozoic rocks of the Huronian Supergroup, namely arenite with minor inter 5. Silver Leader Mines Limited property the metasediments of the Gowganda and Lorrain Formations, un 7a Very fine-grained derlie most of the area. laminated mudstone 7b Wache UNCLAIMED PARCELS OF EXPLORED LAND: The Gowganda Formation consists of a lower unit, the Col 6. D. Burton [1964] eman Member and an upper unit, the Firstbrook Member. 7c Arkose 7. Geoscientific Prospectors Limited [1956] Coleman Member rocks unconformably overlie the Archean 7d Mudstone, shaley mudstone basement and are approximately 500 m to 600 m thick. They 7e Siltstone and claystone S. Goldex Mines Limited [1973] consist of a local basal breccia consisting of angular granitic 7f Technically brecciated and sheared 9. Keevil Mining Group Limited [1965] clasts. overlain by both matrix- and c last-supported, granitic clast 7g Contact metamorphic rocks 10. Lake Beaverhouse Mines Limited [1971] conglomerates which grade upwards into predominantly pebbly 7h Ball and pillow structures 11. Mining Geophysics Company Limited [1956] wacke. Locally however, laminated (-C0.3 cm beds) to thinly bed 12. Riopel, B., occurrence [1950] pebbly siltstones, and pebbly 7i Ripple marks ded (3 lo 10cm beds) silts tone s, 13. Schubert. I., occurrence [1972] arkose are intercalated with massive to thickly bedded pebbly 7j Soft sediment deformation wacke. 7k Laminated bedded K0.3 lo 1 cm) 14. Upper Twin Lake occurrence Coleman Member rocks are characterized by rapid lateral 7I Thinly bedded (1 to 10 cm) lithofacies changes and the presence of "dropstones". Contacts 7m Medium bedded (10 to 30 cm) between the Coleman and overlying Firstbook Member are poorly 7n Thickly bedded (30 to 100 cm) exposed, but appear to be conformable and abrupt. The transition is marked by the disappearance of granitic clasts and/or 1 to CONFORMABLE CONTACT 2 mm quartz grains within the sediments, and by an abrupt change ABBREVIATIONS in bedding and lithology to laminated grey to maroon siltstones Coleman Member and wackes in the Firstbrook Member. Ag...... Silver The thickness of the Firstbrook Member is generally in the 6 Unsubdividedc anna ...... Annabergite range of 100 to 200m, except in the northern part of the map 6a Coarse-grained, pebbly wacke Au...... Gold sheet where it is 400 m thick. Contacts between the Firstbrook 6b Fine-grained, silty, pebbly wacke Member, and the overlying Lorrain Formation are conformable and BD...... Beaver Dam gradational over 10 to 20 m, except in one locality at the northern 6c Arkose, pebbly arkose, pebbly arkosic wacke Co...... Cobalt edge of the map area (southern shore of Petraut Lake) where this 6d Arenite, pebbly arenite is an angular unconformity. 6e Mudstone, pebbly mudstone, and lesser siltstone cp ...... ,...... Chalcopyrite locally have a thickness and claystone Cu...... Copper Rocks of the Lorrain Formation which 6f Matrix-supported pebble and cobble of approximately 600 to 700 m, underlie the eastern half and conglomerate cv ...... Carbonate veins northern margins of the map area. The lower portion of the formation consists of thickly bedded (30 to 100cm beds), green, 6g Clast-supported pebble and cobble ery ...... ,...... Erythrite subarkosic wackes interbedded with minor laminated siltstones conglomerate gn ...... Galena 6h Basal breccia which grade upwards into laminated subarkosic wackes that com Pb ...... ,...... Lead monly exhibit crossbedding and minor graded bedding. 6i Contact metamorphic rocks Overlying this is a unit of medium-bedded (10 to 30cm) 6j Soft sediment deformation py ...... ,...... Pyrite coarse- and fine-grained subarkose and subarkosic wacke, which 6k Dropslones po ...... Pyrrhotite is in turn overlain by thickly bedded micaceous subarkose and qcv ...... Quartz carbonate vein micaceous arkose which contain rare pebbly beds. 6I Laminated bedded Ko.3 to 1 cm) to 10 cm) Early Proterozoic Nipissing quartz diabase forms a north- 6m Thinly bedded (1 qv ...... Quartz vein trending, 600 m thick sill which intrudes mainly Coleman Member, 6n Medium bedded (10 to 30 cm) sm ...... ,...... Smaltite Member and Lorrain Formation lithotogies. 60 Thickly bedded (30 to 100 cm) and lesser Firstbrook sp ...... Sphalerite Contact metamorphism of these sedimentary rocks resulted in local chlorite spotting in Lorrain Formation rocks and local UNCONFORMITY spec ...... Specular hematite chloritization, epidotization and recrystallization of Coleman and Zn ...... Zinc Firstbrook Member rocks at several localities. ARCHEAN Coarse-textured diabase, varied textured diabase, and minor MAFIC INTRUSIVE ROCKS granophyre are the main lithologies of the slightly differentiated Nipissing Diabase sill. 5 Unsubdlvidedc The youngest Precambrian rocks in the area are represented 5a Diabase by a no rt h west-trending, 200 m wide olivine diabase dike of the 5 b Gabbro Sudbury Swarm, which cuts across Cassels Township. 5c Glomeroporphyritic diabase (Matachewan type) SOURCE OF INFORMATION 5d Lamprophyre Base-map derived from Ontario Base Maps, Ontario Ministry of Structural Geology INTRUSIVE CONTACT Natural Resources: Sheets 2017590052200; 2017600052000; 20 17 6000 52000. Archean metavolcanics in Cassels Township are folded into a 46 58W northeast-trending syncline which is the extension of the Lake FELSIC TO INTERMEDIATE INTRUSIVE ROCKS Assessment Files Research Of Tetapaga syncline (Bennett 1978; Fyon and Crockett 1986). To the (Chambers-Strathy Batholith) Source Mineral Deposits Record, Riddell Township, pillowed Archean flows indicate top fice, Ontario Geological Survey, Toronto. south in Another northeast-trending, 5 cm wide sulphide vein (800 m to the east and northeast. References Table 1: Grab sample assay values for samples collected during the 1986 field season. Table 2: The following assay results are from the Assessment Files Data, Table 3: Data filed with Resident Geologist Office, Cobalt, and Geoscience Data Centre, Toronto, to June, 1980 directions north of the shaft) contains massive chalcopyrite, pyrite, and 4 Unsubdividedc Sedimentary rocks of the Proterozoic Gowganda and Lorrain Barlow, A.E. Sample numbers correspond to location numbers on map face. Value in ppb _____Geoscience Research Office, Toronto. ^ ^^^^^^ ^^ Resident Geologist©s files, Ontario Ministry of Northern Develop minor calcite. This vein is along a joint surface in relatively or ppm, or if in brackets, in 9fc or oz/ton. 1 4a Biotite granite ment and Mines, Cobalt. Formations have undergone two periods of folding, the effects of unsheared and unaltered varied textured diabase close to several 1899: Geology and Natural Resources of the Nipissing and SaniDle Au Aa Cu Co Ni As Zn Company Mane Commodity Geology Geochem Trenching Drilling Assay Underground Proapectu* Airborne Airborne Ground Ground Self Resis which are mainly evident in the southern half of the map area. F, Netals istry Stripping Data Work/Shaft Notes Magnetic Electro Kagnetic Electro- Potential tivity 4b Biotite granodiorite and minor trondhjemite crosscutting, aplitic, granophyre veins. Assay values indicated Temiscaming Map Sheets; Annual Report of the Geological Cu Co Pt Pd NI A* Pb no Corres Sample Au AS 101 37. 03g trace i.oax 3.87X 0. 12X 10. 39X magnetic Hagnetic 4c Quartz monzodiorite Assessment Files Research Office, Ontario Geological Survey, fold hinges are oriented in a northeastly direction. Elsewhere, average grade of 2.67 ounces Ag/ton and IS.76% Cu over a width Survey of Canada, Volume 10, Report l, p.172-174. HO. DDb B P" com DOTH DDb DDb oom DDBI DDb X DDIB pondence northeast-trending (F^ fold hinges are parallel to the original Resident Geolo 4d Contaminated border zone with numerous Toronto. of 10cm for a length of 18 m (Assessment Files, 2 168 - ci ei . 1 Aldage Nines. Ag, Co 63 64 63,64 63,64 64 63 63 bedding and are represented by local north- and northeast-tren Bell, R. 1 lO2a 5. 90 02 21 X trenching xenoliths gist Office, Cobalt). Samples taken by the author indicated values 2 <2 *2 *1 Rabbit Lake. The 1U4 O. 12X 2 © -wide trench1 est for potential PGE (platinum group element) mineralization. Report for 1908, Volume 18, Part 2, p.21-31. Accompanied 12* <2 <2 - 7 2. 06?. trace Ltd. dominant foliation trends in this area are northwesterly striking <2 - *s 20 Hi \Zn Cassels Township, Ontario Geological Survey, Geological Data Several studies of the PGE potential of Nipissing Diabase rocks in by coloured map I8f, scale 1 inch to 1 mile 12b 2 . 6 Goldex nines AB, Co 73 73 73 3a Pyroxenite and steeply dipping, and represent the penetrative schistosity 13 ^ *2 20 50 \ other areas have been completed over the last few years (Conrod 105 O. 94X Q. 01X IO.02X trenches Ltd. Inventory Folio 117, 1982. which is associated with F2 folding. Bedding orientations are more 14 12 ^ 54 10 3b Gabbro (Rowell and Edgar 1984). Sampling by the Coleman, A.P. NI iZn northwest-striking and shallow, and Naldrett 1985) 15 22 <2 660 142 9 Gas se lin Ag, Co j j 49 variable, but mainly indicate 1900: Copper and Iron Regions of Ontario; p 172-174 in Ontario 9 *2 365 38 1 Property 3c Leucogabbro Geological Survey, Geological Data in author in the Cassels and Riddell area, however, has not yet 16 toe Riddell Township, Ontario southwest-dipping strata. The resultant cleavage/bedding intersec Bureau of Mines, Annual Report for 1899, Volume 9, Part 1, 17 4 *2 1O4O 160 0. 14X1 Itractf IO. 016X1 ventory Folio 166, 1984^ yielded any significant results, with the highest values of 50 ppb 15 >2 188 42O 1 1 Hi IZri 1 10 Hemes (lines base 45 46 tions indicate northwest-trending, shallow-plunging (Oc to 100) F2 p. 143-191. 18 e t ala INTRUSIVE CONTACT Pt and 30 ppb Pd from a calcite vein with smaltite hosted by 19 3 <2 630 97 Ltd. fold hinges. The refolding resulted in a series of east- to - - lO7a diamond drlilin( Nipissing Diabase in Riddell Township as described above. Conrod, D.M., and Naldrett, A.J. 2Q 16 *2 0.35 02 Xg/Xon/lQ© sludge sample li HolL-inger base Geology not tied to survey lines. northeast-trending anticlines and synclines in which strata dip 150 21 225 2 373 92 Mines Ltd. Mtala METAVOLCANICS are also locally present I07b 0. 55 oz Ag/ton/ 2O* sludge sample diamond drillin to 35C to the east or west. Scattered disseminated sulphides 1985: Petrology, Geochemistry, Isotopic Studies and Platinum 22 5 ^ 389 18 Intermediate to Felsic Metavolcanic Rocks6 within the lowest part of the Coleman Member (Gowganda Forma Group Element Potential of the Nipissing Diabase; Grant 23 ^ C2 39 14 12 Keevil Hininj base 65 65 Magnetic declination approximately 11^, 1986. It is believed that the F, folding probably occurred during the lO7c 0.55 oz Ag/ton/lCT aludg* sample diamond drilling tion) sedimentary rocks which host minor pyrite, chalcopyrite, and 230, p.206-222 in Geoscience Research Grant Program, 24 26 <2 Group Ltd. etale Penokean Orogeny while the F2 folding was possibly related to the 25 a *2 65O 90 2 Unsubdividedc galena or calcite-quartz veins containing the minerals. Summary of Research, 1984-1985. edited by V.G. Milne, 13 Lake Beaver base Metric Conversion facior 1 foot ~ 0.3048 m. later Grenville Orogeny since its effects are mainly seen in the 26 33 19 600O 52 house Hi nee etale 2a Dacite This occurs particularly along the diabase contact or above Ontario Geological Survey, Miscellaneous Paper 127, 246p, 27 85 3 175O 25 Ltd. part of the map area closest to the Grenville Front. <2 Archean felsic volcanic rocks which commonly contain dissemi Fyon, A.J., and Crocket, J.H. 28 11 140O 24 2b -.Rhyodacite All information may not be present on both maps. Several shear zones and lineations have been identified. The nated sulphides. This is encountered on the Silver Leader Mines 29 7 <2 44 25 14 Mining base 56,57 only majo* shear zone is the northeast-trending Link Lake De 1986: Exploration Potential for Base and Precious Metals Min 30 <2 <2 800O - Gcoptiyaicil ne talc 2c Rhyolite Limited Property east of Bogie Lake, and at the Goldex Mines 31 *2 4 5720 - Co. Ltd. 2d Tuff formation Zone which cuts the Archean metavolcanics of the Lake eralization in Part of Strathy Township. Temagami; Ontario (23. 4X) Limited Property at Boulton Lake. 32 3 as Athona base 56 Tetapaga Syncline in the Boot Bay area of Cassels Township. In Geological Survey, Open File Report 5591, 46p., 5 figures, 33 960 4 470 5950 3000 15 Hew 56 56 50,56 62 y 2e Lapilli tuff for veins of cobalt, silver, and - - Minea Ltd. met ale other areas, both northeast and northwest strikes of minor shear Three areas with potential and 7 maps in back pocket. 34 *2 ^ 4 2 2f Fine-grained flows zones have been recognized within the younger Huronian sedi copper mineralization are: a) along the upper margin of the Nip 35 C2 <2 - - 4 2 16 B. Riopel Ag, Co 56 issing Diabase sill; b) in the lower part of the Coleman Member Knight, C.W. 36 ^ K2 - *5 2g Crystal tuff mentary rocks. *5 17 Rio Tinto baae 69 69,70 CREDITS sedimentary rocks adjacent to the lower diabase contact; and c) in 1920: Windy Lake and Other Nickel Areas; p.211-219 in Ontario 37 ^ ^ 12 70 69 69 69 2h Lapillistone The lineaments strike in two general directions: a dominant 38 16 45 - <5 7. 28X Cdn. Explor metal* lower Coleman Member sedimentary rocks which overlie Archean Department of Mines, Annual Report for 1919, Volume 29, ©2 - *5 ation Ltd. northwest set and a lesser northeast set. The northwest-striking 39a O 2i Slump breccia sulphide-bearing felsic or mafic metavolcanics. but are slralig- part 1, p. 193-234. 39b ^ *2 - 14 Geology by Peter Born, C. Stephenson, M. Hitch, and assistants, set is probably related to the fracturing associated with the devel Id L. Schubert base 70 71,72 70 70 2j Schistose raphically below the lower diabase contact. Geological environ 40 <2 *2 etals 1986. Legun, Andrew 41a 1195 ^ 475 392 2k Carbonatized opment of the Lake Timiskaming Rift System (Lovell and Caine ments, as mentioned above, are analogous to the Cobalt Camp 1970). 1986: Huronian Stratigraphy and Sedimentation in the Cobalt Area; 41b 50 2 2090 5 6 19 Silver Leade/ Ag, Co 69 69 69 75, 77, 69 (Legun 1986). and the presence or absence of mineralized veins 42 305 85 ( 11. 7X) 630 ^ 2 *2 64 8 24 Wabi River baae 68 6B 68 Previous assays from surface trenches at the New Athona 1901: Iron Ores of the Nipissing District; Ontario Bureau of Mines, 57 *2 <2 - 10 Mining Ltd. metals 1f Amphibolite shaft was sunk on a 10 cm wide, southwest-trending calcite-quartz 58 2 <2 12 10 (cobalt bloom), arsenopyrite, pyrite, Property indicated 1 to 2^ Cu and O "/o Zn, with trace amounts of Annual Report for 1901, Volume 10, p. 160-180. - ~ 25 Nestville base 56 1g Variolitic basalts Issued 1988 vein with cobaltite, erythrite 59 2 <2 2 44 ^ *1 b) Subdivisions of major rock units does not indicate age rela calcite-quartz veins. Sulphides present are chal neous Paper 121, 252p. 71 *2 <2 - - 2 ( 1. 35X) Geological Series-Preliminary Map, scale 1:15 840 or 1 inch potential that remains is for deeper diamond drilling and subse 73 *2 <2 58 20 c) Outcrops from aerial photographs, not visited. ^ 100 to 3400 ppm Co (Geoscience Laboratories, OGS, Toronto). A - lo 1/4 mile. Geology 1986. quent down-hole geophysical surveys to establish the possible 1925: The Matabitchuan Area, Districts of Timiskaming and Nip 74 4 *2 44 d) May contain some minor younger Nipissing Diabase. .© J © parallel and similar vein on the east side of Gosselin Lake is 75 3 ^2 - 44 2 1 presence of a deeply buried orebody. issing; Ontario Bureau of Mines, Annual Report for 1925, - 20cm wide and contains cobaltite or smaltite, erythrite, nicolite, 76 i 4 K2 40 1