Ontario Geological Survey
Permanent Link to this Record:
MDI52K01SW00033
| Record Name(s) | Centrefire Creek - 1979 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1995-May-24 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Zinc, Silver, Lead
Township or Area: Lomond
Latitude: 50° 0' 5.02" Longitude: -92° 23' 27.56"
UTM Zone: 15 Easting: 543644.71 Northing: 5538963.44 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52K01SW
Point Location Description: Transfer
Location Method: Conversion from MDI
1979: Rio Tinto Canadian Exploration Ltd. drilled 1 DDH for 126.5 m. Selco Mining Corp. Ltd. conducted EM and magnetic geophysical surveys and drilled 1 DDH for 124 m. 1998: Synergy Exploration Ltd. carried out geological mapping and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 52F16NW0004 | 20000005236 | 20000005236 |
| 52K01SW0017A1 | 52K01SW0332 | 52K01SW0332 |
| 2.19873 | 52K01SW2003 | 52K01SW2003 |
| 52K01SW AG-0026 | 52K01SW0337 | 52K01SW0337 |
Province: Superior
Subprovince: Wabigoon
Belt: Abram-Minnitaki Lakes
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Intermediate Tuff | 1 | Rhyodacite Tuff | Host |
|---|
| 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 | Galena | Economic | Ore | ||||
| 4 | Sphalerite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue |
Apr 30, 2020 (Therese Pettigrew) - Drilling by Selco in 1979 (hole #30-4-1, located approximately at Synergy's L4+20E/9+40N,) intersected significant alteration (highly sericitized rhyodacite tuff) underlying (ie. north of) massive sulphide mineralization (two bands of pyrite-pyrrhotite, 1.5 m and 2.1 m thick, respectively). DDH 30-4-1 assayed up to 0.15 oz/t Ag (Assessment report 52K01SW0332). Drilling in 1979 by Rio Tinto Canadian Exploration (hole #79-G3) about 450 m east of Selco's hole, intersected footwall graphitic, argillaceous beds, followed by sericitized and chloritized dacite (rhyolite?) cut by pyrite-pyrrhotite stringers, and including a 5 cm vein of 30% galena and 15% sphalerite. The hole terminated in variably biotite-chlorite altered andesite/dacite breccia (with occasional garnets) cut by pyrite-pyrrhotite stringers. Sample BGS/8-99/012 returned 1175 ppm Cu. Sample 2494 returned 1155 ppm Cu and 4170 ppm Zn (Assessment report 52K01SW2003).
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