Ontario Geological Survey
Permanent Link to this Record:
MDI000000003038
| Record Name(s) | Minto North - 1903 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2022-Jun-06 |
| Date Last Modified | 2022-Jun-06 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Hutchinson
Latitude: 48° 49' 5.88" Longitude: -91° 16' 24.05"
UTM Zone: 15 Easting: 626748 Northing: 5408695 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52B14SW
Point Location Description: Sample 18DCMT006 from OFR5363 p. 63
Location Method: Data Compilation
1982: M. Wicheruk carried out stripping, trenching, and sampling.
| Rock Type | Rank | Composition | Texture | Relationship | Tonalite | 1 |
|---|---|---|---|---|
| Vein | 2 | quartz | ||
| Schist-Unsubdivided | 3 | chlorite |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Arsenopyrite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Chlorite | Economic | Gangue | ||||
| Ankerite | Alteration | Carbonatization | 1 |
Jun 06, 2022 (Therese Pettigrew) - A stripped area approximately 15 to 20 m wide by 50 m long at the Minto North occurrence exposes a vein system that is larger and more complex than the Minto South occurrence. The main vein–shear system at Minto North strikes northeast at 45° with near-vertical dips and northeast-plunging lineations (Schnieders and Dutka (1985) noted a 74°NW dip). The main quartz vein ranges between 2 to 8 m wide but averages around 4.5 m. This structure has been traced intermittently for approximately 80 m. The quartz vein is milky-white and highly fractured with small sulphide burns throughout, as well as a few patches of semi-massive and stringer pyrite. The vein is hosted by strongly foliated and fractured biotite tonalite to granodiorite with zones of crenulated iron-chlorite schist and carbonate alteration up to 4 m wide, interpreted to represent a regional fault. C-S fabrics observed in the chlorite schist on the west side of the outcrop and tension veins on the north end of the outcrop indicate sinistral movement. Extensional veins striking north were also observed and noted by Schnieders and Dutka (1985).
| Commodity | Analytical Method | Digestion Method | Result | Unit | Limit | Qualifier |
|---|---|---|---|---|---|---|
| Gold | Unknown | 1298.2 | ppb | |||
| Palladium | Unknown | .42 | ppb |
Mono - Report of Activities 2018, Resident Geologist Program, Thunder Bay South Regional Resident Geologist Report: Thunder Bay South District
Publication Number: OFR6353 Page: 52-53 Date: 2019
Author: Puumala M.A., Campbell D.A., Tuomi R.D., Fudge S.P., Pettigrew T.K., Hinz S.
Publisher Name: Ontario Geological Survey
Location:
Mono - Property visits and reports of the Atikokan economic geologist, 1979-1983, Atikokan geological survey
Publication Number: OFR5539 Date: 1985
Author: Schnieders B.R., Dutka R.J.
Publisher Name: Ontario Geological Survey
Location:
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