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Ministry of Energy, Northern Development and Mines
Permanent Link to this Record: MDI000000001911| Deposit Name(s) | Talc Copper Occurrence - 1999 |
|---|---|
| Deposit Status | discretionary occurrence |
| Date Created | 2016-Apr-20 |
| Date Last Modified | 2016-Apr-20 |
| Created By | T Pettigrew |
| Revised By | T Pettigrew |
Primary Commodities: copper
Secondary Commodities: nickel, palladium, platinum
Township or Area: McGill
Latitude: 48° 57' 22.66" Longitude: -85° 28' 14.91"
UTM Zone: 16 Easting: 611945 Northing: 5423724 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42C13NE
Point Location Description: AFRI 42C14NW2005
Location Method: based on assessment
Access Description: Access to the southeastern and southern portions of the property is via a network of Domtar logging roads beginning approximately 70 km south near the town of White River. The road network begins with Domtar Road 100 at the Domtar Mill on Highway 17 and leads north to Domtar Roads 135, 400, 403, 403-130, and 403-134, respectively.
1984: Golden Rule Resources Ltd. flew airborne magnetometer, EM, resistivity, and VLF-EM surveys. 1989: Noranda Exploration Co. Ltd. flew helicopter-borne magnetometer and EM surveys. 1998: J. Ternowesky, W.L Cox, and L. Halverson staked 7 claims along the southeastern margin of the Bulldozer Mafic-Ultramafic Complex. 1999: The Talc Cu Occurrence and several other sulphide occurrences were discovered during an exploration program that included linecutting, ground magnetometer and VLF-EM surveys, and limited prospecting. Gryphon Metals Corporation optioned the property a short time later and staked another 12 claims to the west of the existing claims. 2000: Gryphon completed a magnetometer survey. Gryphon subsequently optioned the property to Freewest Resources Canada Inc. who then completed prospecting and geological mapping. 2005: North American Palladium Ltd. flew a VTEM geophysical survey.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.21081 | 42C14NW2005 | Open |
| 2.29920 | 20000000416 | Open |
| 2.21463 | 42F03SW2001 | Open |
| 42C14NW0011 | 42C14NW0006 | Open |
| 2.30994 | 20000000946 | Open |
Province: Superior
Subprovince: Wawa
Intrusion: Bulldozer Mafic-ultramafic Complex
Geological Age: Archean
03/21/2016 (T Pettigrew) - The Talc Copper occurrence is located near the northern margins of the large Black-Pic Batholith of the eastern Wawa Subprovince, Superior Structural Province. The rocks within this portion of the Subprovince have not yet been mapped by the OGS or GSC. The composite Black-Pic Batholith is a foliated to massive, tonalitic to granodioritic structural dome intruded by late gabbro, diorite, granite, and granodioritic complexes and plutons. It is characterized by a low to moderate intensity, relatively uniform magnetic signature and is bound by the moderately to strongly magnetic Manitouwadge-Hornpayne greenstone belt to the north; the variably magnetic, eastern Schreiber-Hemlo greenstone belt and the roughly circular, very strongly magnetic Coldwell Alkaline Complex to the south, and the Dayohessarah-Kabinakagami greenstone belt to the east. The Bulldozer Mafic-Ultramafic Complex is readily visible on airborne magnetic maps as a large (10 x 7 km), strong, elliptical anomaly with a north-trending, western apophysis. All rock-types in the region are cross-cut by numerous, moderate to strong, linear, magnetic anomalies generally representing Paleo-Proterozoic, quartz and locally olivine diabase dykes of the NW-trending Matachewan (2454 Ma) and NE-trending Marathon (2170) swarms. Many of these dykes occupy pre-existing faults (AFRI 42C14NW2005).
| Rock Type | Rank | Composition | Texture | Relationship |
|---|---|---|---|---|
| ultramafics | 1 | talcose hornblende pyroxenite | host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Habit Description |
|---|---|---|---|---|---|---|---|
| 1 | chalcopyrite | economic | ore | ||||
| 2 | pyrite | economic | ore | ||||
| 3 | pyrrhotite | economic | ore | ||||
| 1 | hornblende | economic | gangue | ||||
| 2 | pyroxene | economic | gangue | ||||
| talc | alteration | serpintinization | 1 | strong | massive |
03/21/2016 (T Pettigrew) - The Talc Occurrence (Map 1) is located 485 m west of Bulldozer Lake and 720 m southwest of the West Bulldozer Lake Occurrence. It consists of a single sample (BD58667) of strongly talcose hornblende pyroxenite (possibly peridotite?) hosting a small, diffuse zone of 1-2% finely disseminated chalcopyrite, pyrite, and pyrrhotite. The sample graded 1689 ppm Cu, 144 ppm Ni, and weakly anomalous Pd (39 ppb). Sample BD58684, located approximately 75 m south-southeast is strongly anomalous in Pd and Cu containing 114 ppb Pd, 51 ppb Pt, and 832 ppm Cu. (AFRI 42C14NW2005).
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For detailed information regarding this mineral deposit please contact the Thunder Bay South Resident Geologist District Office