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It is recommended that reference to the Content be made in the following form: Oswiacki, L. 1985. Geology and mineral deposits of Lundy Township, Timiskaming District; Ontario Geological Survey, Preliminary Map 2733, scale, 1:15 840.

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Ministry of Hon. Alan W. Pope MARGINAL NOTES Minister Natural LOCATION AND ACCESS John R. Sloan Resources Deputy Minister Lundy Township is located in the District of Timiskaming. 20 km west of Ontario the Town of New Liskeard. It is bounded by Latitudes 47°29'39"N and 47°34'50"N and Longitudes 79°53'17"W and 80°00'58"W Only one good road provides vehicular access into the township. It ex­ ONTARIO GEOLOGICAL SURVEY tends for a distance of 1.5 km, close to the boundary of concessions II MAP P.2733 and III. from a paved road leading from Highway 65 to the Twin Lakes cottage area The road ends at a beaver pond and splits into trails which GEOLOGICAL SERIES - PRELIMINARY MAP extend into the central and southwestern parts of the township. Similar trails are present in the northeast as continuations of lot line roads ex­ tending south from concession road II in Henwood Township (i.e. the GEOLOGY AND MINERAL DEPOSITS eastern boundary of lots 4 and 1). A trail also extends westward as a continuation of concession road V in Hudson Township. All concession roads eventually join with Highway 65. LUNDY The northwestern part of the township is accessible by float plane on Lundy Lake or by a new hunt camp trail leading south from Henwood Township to this lake Access to the southwestern part of Lundy Town­ ship is by boat on the Montreal River from a public dock at Mowat Land­ TOWNSHIP ing. The only dwelling currently inhabited is located in the southern half of lot 2, concession V. A seasonal hunt lodge is located on the northwest­ ern shore of Lundy Lake in lot 10, concession IV. TIMISKAMING DISTRICT

MINERAL EXPLORATION Scale 1:15 840 Discovery and development of silver-bearing veins near Cobalt in 1903 prompted an extensive prospecting boom throughout much of this part of the north. Although only 1 property is described from Lundy Township (Resident Geologist's Files, Ontario Ministry of Natural Resources, Co- balt), discovery of undocumented old pits and trenches during field NTS Reference: 31 M/12 mapping attest to the early exploration undertaken in the area. ODM-GSC Aeromagnetic Map: 1493G A single recorded mineral occurrence (Property 1) is located in the ©1985 Government of Ontario southeastern corner of lot 4. concession V. The claim was initially pro­ spected by the Alex J Godzik group in 1953, and worked later by Harold Walton in 1972. Ten shallow pits were blasted in a 125 by 175 m area, Parts of this publication may be quoted if credit is given and the material exposing sporadic copper mineralization in lower Lorrain Formation is properly referenced quartzose arenite, and younger diabase dikes. Assays including 2.52% copper over 4 feet (1.2 m) were obtained (Resident Geologist's Files, This map is published with the permission of V G. Milne, Director. OntarioGeologica lSurve y Ontario Ministry of Natural Resources, Cobalt). Minor and sporadic claim staking occurred in the northeastern part of the township between 1945 and 1970 along a Nipissing diabase intru­ sion. Unsubstantiated reports describe copper and cobalt mineralization from numerous pits within this diabase but locations were poorly identi­ fied. In 1973, a gold-bearing boulder was discovered by Mr Messenger in the northeastern quarter of lot 1, concession V. The ground was optioned to The International Nickel Company of Canada Limited (now INCO Lim­ ited) but nothing further was discovered The boulder was found in till and contained 16 ounces gold per ton in a quartz-carbonate gangue. In 1906, a headline in the local newspaper (New Liskeard Speaker) an­ nounced that gold-bearing copper was discovered in Lundy Township The article stated that a property was acquired by H.C. Barker and asso­ ciates and hosted a 2.5 foot (75 cm) wide vein averaging 6.5% copper and $4.00 gold per ton (equivalent to 0.24 ounces gold per ton in 1906) No current or past producing mines are known. No geophysical or geo­ chemical surveys have been performed and no diamond drilling has been undertaken. LOCATION MAP SCALE 1:1 584 000 Within a 4 km radius of the township, occcurrences of silver, cobalt, cop­ per, and pitchblende have been previously described from rocks similar to those exposed in Lundy Township. In order to investigate the potential for these minerals, a ground radiometric survey was carried out with a LEGENDa McPhar TV-1 spectrometer by the author, in addition to extensive litho- geochemical sampling. Reliable background values for many of the common trace elements found in Cobalt-type rocks were subsequently PHANEROZOIC derived and possible anomalous areas defined. CENOZOIC QUATERNARY GENERAL GEOLOGY PLEISTOCENE AND RECENT Glacial glaciofluvial. swamp, lake, and stream The map area is underlain by Early Proterozoic Lorrain and Gowganda deposits Formation sedimentary rocks of the Cobalt Group of the Huronian Super­ group. The rocks were subsequently intruded by a moderately-dipping UNCONFORMITY diabase sill and steep-dipping diabase dikes and plugs of Nipissing age. Middle Proterozoic diabase and olivine diabase dikes intrude all older rocks. PRECAMBRIAN MIDDLE PROTEROZOIC The adjoining townships of Auld (McIlwaine 1970), Henwood (Thomson 1960), Hudson (Lovell and Frey 1970) and Barr (Johns 1980) were re­ MAFIC INTRUSIVE ROCKS cently mapped in detail Except for a narrow 400 m strip in the south, 6 Olivine diabase, diabase mapped prior to this survey (Johns 1980), Lundy Township has never been adequately examined. The most recent map and report describing INTRUSIVE CONTACT the general geology were published by Burrows and Hopkins (1922) as part of a reconnaissance study of the larger Blanche River area. EARLY PROTEROZOIC The Gowganda Formation rocks are the oldest exposed in the township MAFIC INTRUSIVE ROCKS and have been previously subdivided into a lower Coleman Member, NIPISSING DIABASE and an upper Firstbrook Member (Thomson 1957) The Coleman Mem­ ber sedimentary rocks are present only in the southeastern part of the 5a Rhythmically layered and granophyric diabase township and form the crest of an anticlinal structure. The centre of the 5b Varied textured diabase anticline comprises a lower sequence of green and buff, thinly laminated 5c Hypersthene diabase argillite and siltstone. Small scale folding is common to this lithology and 5d Quartz diabase (contact zone) drag folds appear in the vicinity of north-striking lineaments. Thick beds 5e Unsubdivided of pebbly wacke and paraconglomerate overlie these rocks and form an arcuate belt about the northeast-trending anticline. Thin, discontinuous INTRUSIVE CONTACT lenses of thin-laminated grey/green siltstone, wacke, and massive, green and pink, fine- to medium-grained arkose are commonly interca­ HURONIAN SUPERGROUP lated. The pebbly wackes are characterized by the presence of 2% to COBALT GROUP 20% pebbles of varied sizes and compositions, resting in a cherty, green, massive or finely laminated matrix Greater than 60% of these Lorrain Formation pebbles are white and granitic in composition Within this unit, massive 4a Basal Transition Rocks an upper, thinly bedded conglomerate occurs sporadically and is characterized by a 20% to 75% grey wacke grades downward into massive to ex­ pebble and boulder content in a variable matrix of arkosic-wacke com­ tremely thick, bedded maroon siltstone (± thin position similar in appearance to "rock flour" described by Pettijohn beds of thinly laminated maroon and green argil (1975). lite) In lot 9, concession I, thinly laminated green siltstone, with 5 to 15 cm 4b Quartzose arenite thick gravel interbeds every 2 m, immediately overlies the conglomeratic 4c Feldspathic arenite (as 4d) but with ball and pil­ rocks low structures developed by thin. interstitial fine- grained shaley arkose beds Firstbrook Member sedimentary rocks outcrop in the central portion of 4d Feldspalhic arenite; coarse-grained, characteris­ the township. Three distinct lithologies are distinguishable. The lower­ tic purple colouration and hematite/sericite(?) al­ most unit is restricted in distribution, possibly due to faulting, and con­ teration sists of maroon siltstone interlayered at 10 cm intervals with thin, (<1cm) laminae of massive chlorite. Dropstones up to 1 m in diameter occur CONFORMABLE CONTACT sporadically at the base. A distinctive black to grey, very thinly laminated argillite immediately overlies this unit. The shape, areal distribution, and Gowganda Formation relative enrichment in many trace elements (e.g. Zn, Ni, Li, Cu, As, and Co) suggest that this sediment may have been deposited in a deeper Firstbrook Member more anoxic part of a basin. More characteristic Firstbrook Member sed­ 3a Thin to medium bedded maroon siltstone. drop imentary rocks overlie these rocks and comprise thin to thick (5 mm to 3 stones at base cm) alternating maroon and green laminae of arenaceous to argilla­ 3b Thinly laminated, black to grey argillite ceous composition. Johns (1980) suggests that these sedimentary rocks 3c Very thin bedded to thinly laminated red and are filling a deep basin located in southern Barr Township and central Firstbrook Township. The author concurs, and adds that a major anti­ green argillite. siltstone arkose cline (Lady Evelyn Lake Anticline) which transects the southeastern part 3d Contact metamorphosed, green/grey laminated of Lundy Township may be the surface expression of a major paleotopo- siltstone graphic high in the underlying Archean basement. This high may have served as a partial barrier between the deeper and more extensive Co- CONFORMABLE CONTACT balt Embayment to the west and the depression described by Johns (1980). Coleman Member 2a Green and buff, thinly laminated argillite and silt­ Coarse-grained clastic sedimentary rocks of the Lorrain Formation un­ stone derlie much of the northwestern part of the township. The base of the for­ 2b Pebbly wacke and conglomerate with minor in- mation is characterized by a narrow, conformable, less than 150m thick, terbeds of siltstone, wacke, and arkose transition zone from the underlying Firstbrook Member sedimentary rocks. Within this zone there is a rapid upward change from massive, 2c Thinly laminated green siltstone with occasional fine-grained, maroon siltstone (±thin interbeds of thinly laminated ma­ thin conglomeratic interbeds roon and green argillite) to green, medium-grained wacke characteristi­ cally exhibiting pink concentrations of feldspar along bedding planes. NOTE Both ripples and small scale crossbeds are are commonly developed in aThis legend is basically a field legend and may be changed as a result of subse­ these sediments An approximately 400 m thick sequence of medium- quent laboratory investigations grained, quartzose arenite conformably overlies the transition zone. The rocks weather pink and buff and are made up of very discontinuous, thin, interfingering and lensoid sand beds. Feldspar and quartz grains within individual beds predominate and are uniform in size but vary from fine grained to medium grained in different beds. Larger volcanic and argilla- SOURCES OF INFORMATION ceous rock fragments (<2 cm) occur sporadically throughout the litholo­ gy. This unit rapidly changes upward to thick-bedded, coarse-grained Base map derived from Forest Resources Inventory Map 475794, Lands arkose or feldspathic arenite which forms much of the middle Lorrain and Waters Group. Ontario Ministry of Natural Resources Formation. The base is characterized by the presence of thin (<25 cm), fine-grained shaley arkose beds which are interstitial to thick coarse­ Resident Geologist's Files. Ontario Ministry of Natural Resources. Co­ grained and massive feldspathic arenite. This produces a ball and pillow balt. appearance to the outcrop. The lithology as a whole resembles, in many National Topographic Series Maps 31 M/5 (Cobalt), 41 P/9 (Elk Lake), 41 ways, the underlying quartzose arenite. It consists of rapidly changing, P/8 (Lady Evelyn Lake), 31 M/12 (New Liskeard), scale 1:50 000. and discontinuous beds of medium and coarse quartz and feldspar grains 31M (Ville-Marie), scale 1:250 000 but includes a much higher felsic component, larger grain sizes (in the order of 1 cm maximum) and rock fragments (up to 3 cm in diameter) Aeromagnetic Maps 1943G (New Liskeard), scale 1:760 320 or 1 inch to which comprise 1% of the unit The rock is also distinguished by the 12 miles, 1504G (Lady Evelyn Lake) and 1505G (Elk Lake), scale presence of pervasive alteration. Discordant yellowish green, sericitic al­ 1:63 360 or 1 inch to 1 mile, by the Geological Survey of Canada teration zones commonly border narrow fractures and also occur within Sudbury-Cobalt Sheet, Sudbury and Algoma Districts: Ontario Geologi­ individual beds. In addition, a purple colouration is imparted to the rock cal Survey, Map 2361, Compilation Series, scale 1:253 440 or 1 inch to 4 as a whole by the presence of irregular clots of hematitic alteration. Col­ miles, by K D. Card and S. B. Lumbers, 1977. our changes are also present in concentric halos around rock fragments and sand grains and may reflect a weathering phenomenon. Temagami- Area, Sudbury. Nipissing, and Sudbury Districts, Ontario Geological Survey, Map P.2296, Geophysical Series, scale 1:100 000, by V.K. Gupta and D.R. Wadge. 1980 Early Proterozoic Nipissing diabase has intruded the Huronian rocks as a subhorizontal sill and as steeply dipping dikes and plugs. The bottom Timmins- Sheet, Cochrane, Sudbury, and Timiskaming contact of the sill trends in a northeast direction from the southwestern Districts; Ontario Department of Mines, Map 2205. Compilation Series, corner of the township and dips moderately at 25° to 35°W. It forms the scale 1:253 440 or 1 inch to 4 miles, by D.R. Pyke. L.D. Ayres, and D.G. eastern limb of a diabase basin, the western limb of which outcrops in Innes, 1973 Auld Township where it dips 30° to 45°E (Thomson 1958). The sill is New Liskeard Area, District of Timiskaming; Ontario Geological Survey, clearly differentiated into zones similar to those identified in Cobalt by Engineering Geology Terrain Study (NOEGTS) 84. by Hriskevich (1952). A narrow zone of fine-grained quartz diabase is pres­ M.A. Roed, 1979. Accompanied by Maps 5021 and 5025, scale ent at the base of the sill and gradually changes upward into a distinct 1:100 000. zone of massive and medium-grained hypersthene diabase. Outcrops characteristically exhibit a clotty appearance, produced by phenocrysts Makobe Lake, Timiskaming District; Ontario Division of Mines. Map of brown, weathered, euhedral pyroxene in a slightly finer-grained ma­ ABBREVIATIONS 2257, scale 1:63 360 or 1 inch to 1 mile, by K.D. Card and W.H McIl- trix. The upper half of the sill comprises coarse-grained, varied textured ments are approached. Quartz veining is locally developed within the Limited) in 1973. 10. concession I. The mineralization is sobparallel to bedding and Burrows, A.G., and Hopkins, P.E. Ag Silver Transitional contact waine, 1977. diabase, characterized by irregular pockets of pegmatitic material oc­ bounded by a narrow bleached alteration zone The thinly laminated 1922: Blanche River Area; Ontario Department of Mines, Annual Report for 1922, sedimentary rocks, usually within 50 m of these lineaments. The veins A zone of faulting is exposed in lot 5, concession IV in the hypersthene Au Gold Firstbrook Lake Area, Timiskaming District; Ontario Geological Survey, curring with sharp and/or transitional contacts within finer-grained mate­ are subhorizontal and dips tend to parallel the bedding in the sedimen­ grey argillite of the lower Firstbrook is anomalously ennched in many of Volume 31, Part 3. 22p. Accompanied by Map 31b. scale 1:63 360 or 1 inch Fault: (assumed) Preliminary Map P.2279, scale 1:15840 or 1 inch to ¼ mile, by G.W. rial of similar composition zone of the Nipissing sill. Sphalerite, galena, and chalcopyrite minerali­ to 1 mile. Chalcopyrite tary rocks. Although movement is inferred in some instances, most of the zation occur as coarse crystalline masses in asbestos-filled fractures the elements found in the silver veins at Cobalt relative to all other Huro­ cp Johns and Robin Van Steenburgh, 1980 Card, K.D., Mcllwaine, W.H., andMeyn , H.D. lineaments appear to be major joints. Two curvilinear, north-trending and as disseminations in adjacent rocks A grab sample collected by the nian lithologies. Cu Copper Lineament Rhythmically layered diabase outcrops in lot 2, concession VI. within a faults are inferred to offset sedimentary beds and diabase intrusions in 1973: Geology of the Maple Mountain Area. Districts of Timiskaming, Nipissing Hudson Township, Timiskaming District; Ontario Division of Mines. Pre­ bulbous protrusion at the top of the sill. Narrow bands of fine- and author returned values of 2.60% Zn, 0.14% Cu. and 1.39% Pb (Geosci- and Sudbury; Ontario Division of Mines, Geological Report 106,133p .Ac ­ ery Erythrite liminary Map P.786, scale 1:15 840 or 1 inch to ¼ mile, by H.L. Lovell, the central part of the township. ence Laboratories, Ontario Geological Survey, ). On strike and to SUGGESTIONS TO PROSPECTORS coarse-grained felsic crystal cumulates(?) range in thickness from 1 mm companied by Maps 2256-2259. scale 1:63 360 or 1 inch to 1 mile, and Lead Jointing; (inclined, E.D Frey. and T.W. Cane, 1972. to 10 cm and exhibit local development of flow folds. This banded phase the east, in lot 4, concession IV, narrow chalcopyrite-bearing, white cal- Map 2260, scale 1:31 680 or 1 inch to ½ mile. Pb Potential for discovery of cobalt and silver-bearing carbonate veins in vertical) Henwood Township. Timiskaming District; Ontario Department of Mines, is in sharp contact with very coarse grained and massive gabbro char­ ECONOMIC GEOLOGY cite veins are exposed in a number of shallow trenches Quartz-carbonate vein Nipissing diabase and intruded wallrock is good The many veins and Hriskevich, M.E. qc Preliminary Map P.160. scale 1:15 840 or 1 inch to ¼ mile, by R. Thom­ acterized by the presence of radially concentrated white and pink felds­ The Walton Copper Occurrence is located at the base of a cliff of Nipiss­ In lot 4, concession II, chalcopyrite mineralization is exposed in a 15 cm 1952: Petrology of the Nipissing Diabase Sheet of the Cobalt Area of Ontario; Un­ qv Quartz veins Anticline son. 1962 par. Podular granophyre has formed along the contact. small occurrences discovered during mapping justify more detailed pro­ ing diabase. Two, and possibly three, narrow and steeply dipping dikes published Ph.D. Thesis. Princeton University. Princeton, New Jersey, 129p. wide, moderately dipping quartz vein in Nipissing diabase. Narrow, grey specting efforts in these locations In addition the presence of a number Zn Zinc Geology is not tied to survey lines. Three Nipissing diabase bodies intrude the sedimentary rocks in the appear to branch from the main intrusion and cut quartzose arenites of aplitic dikes were observed nearby and the only anomalous silver value of significant silver and cobalt occurrences (Card et al 1973) in the Johns, G.W. Vein, vein network; eastern part of the township. These intrusions have inferred steep dips the lower Lorrain Formation. The dikes contain minor chalcopyrite and (8 ppm) obtained from all rock samples in this township was from an out­ same sill on its western margin suggests the likelihood of similar occur­ 1980: Geology of the Firstbrook Lake Area District of Timiskaming; Ontario Geo­ (inclined, vertical) Magnetic declination approximately 10°43'W in 1982 and show variations to the zones observed within the sill. The massive adjacent sedimentary rocks are baked red and contain disseminated crop 550 m northeast of this area (Geoscience Laboratories, Ontario rences to the east in Lundy Township. logical Survey, Open File Report 5303, 86p., 8 tables, 5 figures, 12 photos. Metric Conversion Factor: 1 foot = 0.3048 m speculate and copper minerals. Chalcopyrite predominates and oc­ Accompanied by Map 2279, scale 1:15 840 or 1 inch to ¼ mile. SYMBOLS hypersthene zone is absent: zoning occurs as a core of varied textured Geological Survey, Toronto). In the Lorrain sedimentary rocks, anomalous copper and gold values Float diabase enveloped by a dense, black, medium-grained gabbroic curs in irregular and massive clots to 10 cm in length and as dissemi­ Lovell. H.L., and Frey. E.D. Glacial striae nated crystals. Malachite and azurite have also been recognized. Ten In the southwestern part of the township numerous quartz and quartz- within the quartzose arenites and concentrations of at least the copper phase This relationship suggests that magma may have been em- carbonate veins were discovered by the author. Some were previously 1970: Kerns and Hudson Townships, Timiskaming District, Ontario Division of shallow pits were blasted and all contained varied concentrations of this adjacent to a Nipissing diabase contact warrant further investigation. Mines, Map 2300, scale 1:31 680 or 1 inch to ½ mile. Shaft placed in more typical dike-like fashion with gradual cooling inward to pitted and appeared to be barren of metallic mineralization. A new vein Boulder lag CREDITS mineralization. Assays from pit #7 returned values of 3.40% Cu over a 60 The grey argillite making up the lower Firstbrook Member is anomalously ward the centre. These intrusions are interpreted as being either rem­ was also uncovered by the author on the boundary between lots 11 and McIlwaine, W.H. nant feeder dikes to the sill or separate and slightly younger intrusions of cm (2 foot) width, or 2.52% Cu over 140 cm (4 feet), and 0.72% Cu was enriched in Zn, Co, Sb, Ni, Li, As Pb, and Cr relative to other Huronian li­ 1970: Operation Maple Mountain, Auld Township, District of Timiskaming; Ontario Test Pit obtained for a grab sample from pit #4 (Resident Geologist's Files, On­ 12. concession I The vein is 10 cm wide and was followed for 8 m before Small bedrock Geology by Leo Owsiacki. 1981 ,1982 Nipissing magma. being lost in overburden. A grab sample contained minor chalcopyrite thologies and as such represents an area amenable to sedimentary sul­ Department of Mines, Preliminary Map P.579. scale 1:15 840 or 1 inch to ¼ tario Ministry of Natural Resources, Cobalt) Mineralization is not related phide mineralization. mile. outcrop Fire Tower Narrow olivine diabase and diabase dikes are exposed at various locali­ to any apparent veining. The localization of copper is believed to be inti­ and assayed 0.03% Cu (Temiskaming Testing Laboratories, Cobalt). An Every possible effort has been made to ensure the accuracy of the in­ ties in the township. The dikes commonly exhibit chilled boundaries and old shaft and dump were subsequently discovered by the author 350 m The extension of the Lady Evelyn Lake Anticline represents an area Pettijohn, F.J. formation presented on this map; however, the Ontario Ministry of Natu­ mately associated with the magma, or remobilized out of the sedimen­ Area of bedrock Building, cabin coarser centres and cross-cut both Huronian sedimentary rocks and tary rocks and concentrated near the diabase contacts. southeast of this vein, near the base of the Nipissing sill. The shaft was where basement rocks are estimated to lie within 200 m of surface. Be­ 1975: Sedimentary Rocks (Third Edition); Harper and Row, New York, 628p. ral Resources does not assume any liability for errors that may occur. apparently sunk on a thin vertical seam of carbonate, chalcopyrite, and outcrop remains Nipissing diabase intrusions. cause of a close spatial relationship in Cobalt of silver-bearing veins to Thomson, R. Users may wish to verify critical information; sources include both the Many additional mineral occurrences were found by the author during erythrite. A grab sample assayed 0.47 ounce Ag per ton and 1.23% Cu Archean interflow sedimentary rocks (Boyle et al. 1969) and the affinity of references listed here, and information on file at the Resident or Regional (Temiskaming Testing Laboratories, Cobalt). These occurrences all lie 1960: Henwood Township, Timiskaming District, Ontario Department of Mines. Bedding, top STRUCTURAL GEOLOGY mapping. Some had been previously tested, but not recorded. One such base metal and gold deposits to these rocks elsewhere in the Shield, the Map 2126, scale 1:31 680 or 1 inch to ½ mile. Motor road Geologist's office and the Mining Recorder's office nearest the map occurrence is located in lot 3, concession V, where a narrow erythrite within a broad arsenic and cobalt halo established through extensive area represents an ideal target for geophysical exploration. The combi­ unknown; (inclined, 1958: Notes from Triangle Silver File, Resident Geologist's Files, Ontario Ministry vertical) area Sedimentary rocks are draped about a northeasterly-trending anticlinal seam was observed cutting varied textured diabase. A grab sample as lithogeochemical trace element analyses, which are currently being nation of major lineaments, drag folding in the Coleman Member con­ of Natural Resources, Cobalt Trail compiled by the author. glomerates, and intrusions of Nipissing diabase in this area adds to its axis (Lady Evelyn Lake Anticline). Dips vary from a maximum of 31° west sayed 0.67 ounce Ag per ton, 0.30% Co. and 0 25% Ni (Temiskaming 1957: The Proterozoic of the Cobalt Area; Royal Society of Canada, Special Publi­ to 25° east, except where adjacent to Nipissing intrusions. In some of potential. Schistosity; (inclined, Testing Laboratories, Cobalt) Flecks of chalcopyrite are disseminated Mineralization in the Lorrain Formation sedimentary rocks, other than the cation 2. p.40-45. Radioactivity Issued 1985 these areas, beds have been tilted up to 68° (lot 1, concession VI). The nearby in the diabase. East of this showing, basal transition rocks dis­ vertical) Walton Occurrence, is minor. A few flecks of chalcopyrite were observed fold axis may reflect an underlying paleotopographic ridge of Archean play extensive chlorite alteration spotting similar to that exposed near in the quartzose arenite unit in addition to an occasional bed carrying up rocks which seems to plunge moderately northeasterly and southwester­ Cobalt. Further south in lots 3 and 4, concession IV, flecks of chalcopy­ Magnetic attraction Information from this publication may be quoted if credit is given. It is to 7% disseminated pyrite. Trace element analyses indicate that gold Banding; (inclined) ly. rite were noted in the quartzose arenite between this area and the Walton recommended that reference be made in the following form; has accumulated to a small degree near the top of this unit. It occurs in REFERENCES PROPERTY Two prominent sets of lineaments are apparent, those trending north occurrence to the north. These same rocks display extensive sericite Heavy green amounts greater than 3 times the background calculated for this sedi­ Geological boundary, Owsiacki, Leo predominate and occur throughout most of the township whereas west- and hematite alteration. Boyle, R.W., Dass, A.S., Church, D., Mihailov, G. Durham, C., Lynch. J., and sericitic(?) alteration ment (2 ppb) and the overlying feldspathic arenites. observed 1985: Geology and Mineral Deposits of Lundy Township, Timiskaming to northwest-trending structures are more common in the northwestern Dyck, W. 1. Walton, H.G.,[1973]* District; Ontario Geological Survey. Map P.2733, Geological Se­ Gold-bearing quartz-carbonate float was discovered by Mr. Messenger A thin seam of chalcopyrite was found by the author within the lower, ma­ 1969 Research in Geochemical Prospecting Methods for Native Silver Deposits, Hematite alteration part. They are usually accompanied by small scale, parallel joints which in lot 1 near the boundary between concessions V and VI. and investi­ Geological boundary, ries-Preliminary Map, scale 1:15 840 or 1 inch to ¼ mile Geology seem to intensify in strength and become closer spaced as the linea­ roon siltstone of the Firstbrook Member of the Gowganda Formation in lot Cobalt Area, Ontario, 1966: Geological Survey of Canada, Paper 67-35. *indicates last year of exploration activity gated by The International Nickel Company of Canada Limited (INCO 91p. position interpreted 1981, 1982.