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Ontario Geological Survey
Permanent Link to this Record:
MDI000000002284
| Record Name(s) | Halverson Sulphide - 1992, L. Cox - 1992 |
|---|---|
| Related Record Type | |
| Record Status | Discretionary Occurrence |
| Date Created | 2019-Apr-10 |
| Date Last Modified | 2022-Jan-05 |
| Created By | Therese Pettigrew |
| Revised By | Therese Pettigrew |
Primary Commodities: Zinc, Copper, Gold
Township or Area: Odlum
Latitude: 48° 44' 33.23" Longitude: -85° 5' 10.7"
UTM Zone: 16 Easting: 640689 Northing: 5400605 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42C11NE
Point Location Description: Estimated from maps in RGP files & Google Earth
Location Method: Data Compilation
Access Description: Access to the showing is by Domtar Logging Road 100 (Danny Lake Road).
The showing was found when Domtar was building roads in the area. 1992: L. Cox carried out stripping and sampling.
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 | Host |
|---|---|---|---|---|
| Terrigenous-Clastic-Unsubdivided | 2 | Host | ||
| Gneiss-Unsubdivided | 3 | Amphibolitic | Contains | |
| Pegmatite | 4 | Feldspar-Quartz Pegmatite Dykes |
Apr 10, 2019 (Therese Pettigrew) - The showing is located on the north tip of a metavolcanic-metasediment enclave hosted by tonalitic gneiss. The metavolcanics-metasediment unit is highly metamorphosed and intruded by hornblende diorite, granodiorite and quartz-feldspar pegmatite. The metasediment horizon appears to be 10-20 m thick and bounded by metavolcanics (amphibolite schist). The mineralization is believed to represent a lean iron formation which has undergone high metamorphism. The mineralized zone is surrounded to the east and west by granitoids and locally intruded by quartz-feldspar pegmatites (Clark, 1992 report in Thunder Bay RGP mineral deposit files).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 3 | Magnetite | Economic | Ore | ||||
| 4 | Chalcopyrite | Economic | Ore | ||||
| 5 | Sphalerite | Economic | Ore | ||||
| 1 | Chert | Economic | Gangue |
Apr 10, 2019 (Therese Pettigrew) - The sulphide horizon can be traced for approximately 450 m and ranges from 1-5 m thick. Mineralization consists of magnetite, pyrite, chalcopyrite, pyrrhotite and chert, with sulphides appearing localized near the contact between the amphibolite and granitoids, with sulphides reaching up to 20% locally. The best sample collected by L. Cox assayed 324 ppm Zn and 176 ppm Cu. Samples collected by OGS staff in 1992 returned assays of up to 1680 ppm Cu, 467 ppm Cu, and 0.11 oz/t Au (0.38 ppm Au). The zone strikes 335 degrees (Thunder Bay RGP mineral deposit files).
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For detailed information regarding this mineral record please contact the Timmins Resident Geologist District Office