Ontario Geological Survey
Permanent Link to this Record:
MDI52E10SW00024
| Record Name(s) | Machin Zone - 1897 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1990-Dec-08 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Zinc, Copper
Township or Area: Glass
Latitude: 49° 34' 27" Longitude: -94° 59' 1.85"
UTM Zone: 15 Easting: 356576.12 Northing: 5493176.75 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52E10SW
Point Location Description: Precise
Location Method: Conversion from MDI
1896: Gold discovered on the property by I. Gagne. 1897: purchased by Markell who sold the property to Ontario Limited Gold Mining Company, who completed trenching and pitting on 13 veins including the Machin Zone. 1928-1973: Kenora Prospectors and Miners excavated several trenches. 1963-64: Hopkins and Heintzman drilled 7 DDH totalling 337.2 m. 1965: Hopkins and Heintzman drilled 9 DDH totalling 336.1 m. 1974-75: Imperial Oil Ltd. conducted magnetometer and EM surveys. 2010: S. Siemieniuk carried out prospecting and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 22 | 52E10SW8529 | 52E10SW8529 |
| 17 | 52E10SW8534 | 52E10SW8534 |
| 2.47533 | 20000006151 | 20000006151 |
Province: Superior
Subprovince: Wabigoon
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Intermediate lava flow-unsubdivided | 1 | Andesite |
|---|---|---|---|---|
| Diorite | 2 | Diorite |
| 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 | Chalcopyrite | Economic | Ore | ||||
| 4 | Sphalerite | Economic | Ore | ||||
| 5 | Magnetite | Economic | Ore |
Jan 15, 2020 (Therese Pettigrew) - The Machin zone consists of northeast-striking, steeply southeast-dipping, sheared felsic porphyry enclosed by sheared basalt. The porphyry has a width of up to 6 m and has a known outcrop length of about 70 m. Quartz is present in fractures. Pyrite, pyrrhotite and traces of chalcopyrite and sphalerite are disseminated in the porphyry. Magnetite is locally sufficiently abundant to produce magnetic anomalies. Pyrite and pyrrhotite are also present in the enclosing, sheared basalt. A chip sample of sheared porphyry, taken by OGS staff across 1 m, contained 370 ppb Au, <2 ppm Ag, 1130 ppm Zn, 525 ppm Cu, and 420 ppm As (Davies and Smith, 1988). Hopkins reported up to 15% pyrrhotite, minor chalcopyrite and pyrite in drill core. DDH 65-1 and 65-3 returned 0.04 oz/t Au over 2.1 feet (1.37 g/t Au over 0.64 m) (Assessment report 52E10SW8534). Sample 95517 collected in 2010 returned 900 ppb Au (Assessment report 20000006151).
Part - Mines of northwestern Ontario
Publication Number: ARV07-01.003 Scale: Date: 1998
Author: Bow J.A.
Publisher Name: Ontario Bureau of Mines
Location:
MonoMap - Geology of the Shoal Lake-Western Peninsula area, District of Kenora
Publication Number: OFR5242 Scale: Date: 1978
Author: Davies J.C.
Publisher Name: Ontario Geological Survey
Location:
Part - The condition of Ontario mines
Publication Number: ARV08-01.003 Scale: Date: 1998
Author: De Kalb C.
Publisher Name: Ontario Bureau of Mines
Location:
Part - Geology of the Shoal Lake (west) area, District of Kenora
Publication Number: ARV39-03.003 Scale: Date: 1998
Author: Greer W.L.C.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - The geological setting of gold occurrences in the Lake of the Woods area
Publication Number: OFR5695 Scale: Date: 1988
Author: Davies J.C., Smith P.M.
Publisher Name: Ontario Geological Survey
Location:
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