Ontario Geological Survey
Permanent Link to this Record:
MDI42A09SE00002
| Record Name(s) | McCool Property - 2022, Bonnacord - 1981, Placer Development - 1981, Belore - 1982 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1981-Apr-08 |
| Date Last Modified | 2023-May-08 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: McCool
Latitude: 48° 33' 3.16" Longitude: -80° 4' 15.43"
UTM Zone: 17 Easting: 568561.267 Northing: 5377947.713 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 42A09SE
Point Location Description: Diamond drill hole
Location Method: Conversion from MDI
Access Description: A point 1.35 km north and 4.55 km west of the southeast corner of McCool Twp.
Circa 1960: Texas Gulf Sulfur Co. completed an electromagnetic survey of the area. 1961: Canadian Johns-Manville Co. Ltd. completed magnetic surveys in the area. 1972: Alexander Red Lake Mines Ltd. completed magnetic, VLF electromagnetic, and geological surveys of the Gunnex claims. 1973: Northern Atlas Explorers Ltd. acquired the Gunnex claims electromagnetic survey, and diamond drilled 2 holes totalling 778 feet 1981: Placer Development Ltd. optioned claims in the area from Belore Mines Ltd. and Huronian Mines Ltd. (a Belore Mines subsidiary) and completed magnetic, VLF electromagnetic, and geological surveys (The Northern Miner, April 29, 1982). 1982: Placer Development completed magnetic, VLF electromagnetic, and geological surveys and diamond drilled 9 holes totalling 1,637 m 1983: Huronian Mines, Belore Mines, and Placer Development (project operator) completed additional magnetic, VLF and IP electromagnetic, and geological surveys and reverse circulation drilled at least 41 holes totalling 1,462.4 m 1984: Placer Development diamond drilled at least 24 holes totalling 5814.1 m in the area. 1985: During 1983-1985, about 31,000 feet of diamond drilling is reported to have been completed by Belore Mines, Huronian Mines, and Placer Development (operator) (Canadian Mines Handbook 1986-87). 1988: During 1983-1988, about 40,000 feet of diamond drilling is reported to have been completed by Belore Mines, Huronian Mines, and Placer Dome Inc. (Canadian Mines Handbook 1988-89).
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| DHR-11 | 42A09SE0049 | 42A09SE0049 |
| 30 | 42A09SE0028 | 42A09SE0028 |
Dec 07, 2005 (C Salo) - Bedrock in the occurrence area is largely glacial drift covered. Bedrock consists mainly of east southeast striking, steeply dipping, and south facing weakly metamorphosed (greenschist or lower metamorphic grade, except marginal to felsic intrusive bodies, where contact metamorphic aureoles may be developed) ultramafic to felsic subaqueously deposited volcanic and interflow sedimentary rocks of the (Archean) Stoughton-Roquemaure Group. Intrusive rocks in the area include the McCool Hill Complex, a large (dimensions on the order of 12 km in strike length and 500 m in average width) layered mafic-ultramafic sill of bulk tholeiitic basalt composition (which occurs about 800 m north of and up stratigraphy from the occurrence), small felsic syenitic stocks, a distinctive (and often anomalously auriferous) porphyritic biotite syenite dike, and narrow (generally less than 1 m in width) biotite lamprophyre dikes. The Bonnacord occurrence is on the south limb of the southeast striking and northwest plunging McCool Hill Syncline, is about 1,100 m southwest of the synclinal axes, and is near or within the syncline's closure. The occurrence is spatially associated with the interpreted (Johnstone 1987) location of the Centre Hill Fault, a regional scale stratigraphy subparallel fault the surface trace of which is oriented subparallel to other elements of the Porcupine-Destor Fault Zone (PDFZ) in the area. Johnstone (1987) described the Centre Hill Fault as a strike slip fault across which is developed in southeast McCool Township approximately 3 km of apparent sinestral offset. Johnstone (1987) further postulates that the Centre Hill Fault may represent a relatively young structure which was formed from the same tectonic processes which caused strike slip motion within the preexisting PDFZ.
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Quartz & Quartz -Cb | Host |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Chloritic | Brecciated & Foliated | Host |
| Biotite Lamprophyre | 3 | Biotite Lamprophyre Dike | Near | |
| Sandstone | 4 | Greywacke | Near | |
| Terrigenous-Clastic-Unsubdivided | 5 | Chert | Host | |
| Syenite | 6 | Porphyritic | Near | |
| Syenite | 7 | Plag Fel Py Bio Syenite | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Graphite | Economic | Ore | ||||
| 3 | Magnetite | Economic | Ore | ||||
| 4 | Pyrite | Economic | Ore | ||||
| 5 | Telluride | Economic | Ore | ||||
| 6 | Galena | Economic | Ore | ||||
| 7 | Hematite | Economic | Ore | ||||
| 8 | Arsenopyrite | Economic | Ore | ||||
| 1 | Carbonate | Economic | Gangue | ||||
| 2 | Sericite | Economic | Gangue | ||||
| 3 | Quartz | Economic | Gangue | ||||
| 4 | Talc | Economic | Gangue | ||||
| 5 | Serpentine | Economic | Gangue | ||||
| 6 | Chlorite | Economic | Gangue | ||||
| 7 | Epidote | Economic | Gangue | ||||
| 8 | Garnet | Economic | Gangue | ||||
| 9 | Dolomite | Economic | Gangue | ||||
| 10 | Biotite | Economic | Gangue | ||||
| Feldspar | Alteration | Potassic | 1 | ||||
| Sericite | Alteration | Sericitization | 2 |
Dec 07, 2005 (C Salo) - Diamond drilling at the Bonnacord occurrence has intersected anomalous (assaying greater than 0.01 ounce of gold per ton) gold tenors within: a) visible (coarse grained native) gold bearing quartz vein material; b) brecciated chloritic foliated basalt which is mineralized with pyrite, chalcopyrite, and sphalerite; c) visible gold bearing quartz-(carbonate) vein material hosted by a variety of rock types (including what is generally considered to be relatively late stage biotite lamprophyre dike material) which may contain or have marginal halos of pyrite, chalcopyrite, pyrrhotite, sphalerite, arsenopyrite, or telluride minerals; d) variably fuchsitic pyrite, pyrrhotite, and chalcopyrite bearing laminated graphitic tuff, interflow chert, and greywacke; e) variably fuchsitic native gold bearing cherty interflow material marginal to porphyritic syenitic dike material; f) variably sheared and/or fault gouged basalt/porphyry within lithologic contact areas; and g) a distinctive variably potassium metasomatized (as manifested by sericite and potassium feldspar development), epidotized, and fuchsite altered 6-7 m wide zoned plagioclase feldspar phyric biotite syenite dike.
Journal - Northern Miner 82-05-27, Belore/Placer, p. 1
Publication Number: Northern Miner Date: 1982
Author:
Publisher Name: Northern Miner
Location:
Map - Black River-Matheson Area
Publication Number: OFM0013 Scale: 1:15,840 Date: 1985
Author: Johnstone R.M., Trowell N.F.
Publisher Name:
Location:
Journal - Northern Miner 82-10-07, Belore, Huronian, p. 20
Publication Number: Northern Miner Date: 1982
Author:
Publisher Name: Northern Miner
Location:
Map - Geophysical/geochemical series, Matheson-Black River area, McCool Township, airborne electromagnetic survey, total intensity magnetic survey, District of Cochrane
Publication Number: M80587 Scale: 1:20,000 Date: 1984
Author: Questor Surveys Ltd.
Publisher Name: Ontario Geological Survey
Location:
Folio - McCool Township, District of Cochrane
Publication Number: GDIF380 Date: 1997
Author: Kirkland Lake RGO
Publisher Name: Ontario Geological Survey
Location:
Map - Geological series, bedrock samples from the sonic drilling program 1988, Lake Abitibi-Matheson area, District of Cochrane
Publication Number: P3136 Scale: 1:100,000 Date: 1989
Author: Sutcliffe R.H., Steele K.G., Hart B.R.
Publisher Name: Ontario Geological Survey
Location:
Map - Quaternary geology of Matheson area, Cochrane District
Publication Number: P2735 Scale: 1:50,000 Date: 1985
Author: Vagners U.J.
Publisher Name: Ontario Geological Survey
Location:
Mono - Mineral occurrences, deposits, and mines of the Black River-Matheson area
Publication Number: OFR5735 Page: 878, 1422-1423 Date: 1990
Author: Bath A.C.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology and petrogenesis of the Archean Abitibi belt in the Kirkland Lake area, Ontario
Publication Number: MP123 Date: 1985
Author: Jensen L.S., Langford F.F.
Publisher Name: Ontario Geological Survey
Location:
Article - Precambrian geology of the Black River-Matheson (BRIM) area, District of Cochrane
Publication Number: MP119.050S Page: 278-282 Date: 1997
Author: Johnstone R.M., Trowell N.F.
Publisher Name: Ontario Geological Survey
Location:
Article - Precambrian geology of the Black River-Matheson (BRIM) area, District of Cochrane
Publication Number: MP126.056S Page: 291-296 Date: 1997
Author: Johnstone R.M., Trowell N.F.
Publisher Name: Ontario Geological Survey
Location:
Article - Kirkland Lake Resident Geologist's area, Northern Region
Publication Number: MP134.007 Page: 175-218 Date: 1997
Author: Lovell H.L., Grabowski G.P.B., Guindon D.L., Bath A.C.
Publisher Name: Ontario Geological Survey
Location:
Part - Geology of McCool Township
Publication Number: ARV61-05 Date: 1997
Author: Satterly J.
Publisher Name: Ontario Dept. of Mines
Location:
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