Ontario Geological Survey
Permanent Link to this Record:
MDI42D09NW00010
Record Name(s) | Dunlop Copper Project - 1983, W.B. Dunlop - 1983, Kinasco-Conwest - 1956 |
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Related Record Type | Simple |
Related Record(s) | |
Record Status | Occurrence |
Date Created | 1983-Mar-29 |
Date Last Modified | 2022-Mar-02 |
Created By | |
Revised By |
Primary Commodities: Copper
Secondary Commodities: Zinc, Molybdenum, Nickel, Silver
Township or Area: Pic
Latitude: 48° 43' 9.07" Longitude: -86° 19' 32.94"
UTM Zone: 16 Easting: 549588 Northing: 5396459 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42D09NW
Point Location Description: AMIS location
Location Method: Conversion from MDI
Interest in the area originated in the early to middle 1950s with the blasting of a rock cut for Highway 17 (Trans-Canada Highway) which revealed gabbro mineralized with chalcopyrite and pyrite extending over an area about 61 m by 15 m. 1955: Kinasco Exploration and Mining Ltd. conducted a self-potential survey and drilled 5 exploratory x-ray diamond drill holes. 1956: Kinasco drilled 10 DDH totalling 1928 m. 1961: International Nickel Company of Canada Ltd. (INCO) restaked the lapsed claims and completed a gravimetric survey over the main showing. 1962: Conwest Exploration Company Ltd. made a preliminary investigation of the property. 1964: Conwest drilled 2 DDH totalling 306 m. 1977: Anaconda American Brass held the claims. 1991: Noranda Exploration Company Ltd. conducted IP/Resistivity and total field magnetic surveys. 1992: Noranda drilled 2 DDH totalling 377 m. 1993: Stillwater acquired the dispositions.
Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
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58 | 42D09NW0306 | 42D09NW0306 |
42D16SW0084 | 20000005919 | 20000005919 |
2.14472 | 42D09NW0003 | 42D09NW0003 |
11 | 42D09NW0133 | 42D09NW0133 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Geological Age: Archean
Rock Type | Rank | Composition | Texture | Relationship | Gabbro | 1 | Host |
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Breccia-unsubdivided | 2 | Host | ||
Terrigenous-Clastic-Unsubdivided | 3 | Adjacent | ||
Mafic lava flow-unsubdivided | 4 | Adjacent |
Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
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1 | Chalcopyrite | Economic | Ore | ||||
2 | Pyrite | Economic | Ore | ||||
3 | Molybdenite | Economic | Ore | ||||
4 | Pyrrhotite | Economic | Ore |
Sep 29, 2015 (Therese Pettigrew) - The 1955 self-potential survey outlined an anomaly 610 m by 38 m. Diamond drilling intersected massive pyrite and chalcopyrite in four out of five holes. One intersection assayed 3.5%copper over 3 m, and another assayed 1.2% copper over 10 m. Most of the holes drilled in 1956 intersected medium- to fine-grained gabbro, highly metamorphosed sedimentary rocks, and minor monzonite. Massive and disseminated sulphides consisting mostly of pyrrhotite, pyrite, and minor chalcopyrite, were intersected in all of the holes. The best assays from Conway’s 1964 drilling gave nil values for gold, 0.03 ounces silver per ton, and 0.59 percent copper over 3 m, averaging 0.31 percent copper throughout. The gossan zone in the roadcut has undergone considerable weathering since 1956. Flat-lying contact breccia forms the host for the mineralization. Although some mineralized zones reportedly ran 2 percent copper over widths of up to 1.5 m, a grab sample collected by T. Muir, containing chalcopyrite and pyrite, assayed 0.85 percent copper and negligible lead, zinc, and nickel. A few traces of molybdenite were seen during the field examination (Muir, 1982). The mineralization occurs within a wide zone situated along the contact between gabbroic rocks of the Coldwell Complex and Archean metavolcanics and metasediments to the east. Within this zone, large rafts of supracrustal rocks have been assimilated with the host gabbros. Sulphides occur as disseminations of chalcopyrite and pyrrhotite (trace to 1%) within medium- to coarse-grained gabbro or as stringers and disseminations within the volcanics and sediments. The best assay values from hole ND92-1 and 2 returned 0.35% Cu over 6 m and 0.42% Cu over 4 m respectively (AFRI 42D09NW0306).
Rank | Characteristic |
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1 | Breccia |
Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
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Unknown | 610 | 38 |
MonoMap - Geology of the Heron Bay area, District of Thunder Bay
Publication Number: R218 Scale: Date: 1982
Author: Muir T.L.
Publisher Name: Ontario Geological Survey
Location:
Map - Heron Bay, Thunder Bay District
Publication Number: M2439 Scale: 1:31,680 Date: 1981
Author: Muir T.L., Barnett E.S.
Publisher Name: Ontario Geological Survey
Location:
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