Hermiston-McCauley Mine is a large abandoned underground gold mine in Strathy Township of Temagami, Northeastern Ontario, Canada. It is located between the southwestern arm of Net Lake and the south arm of Kanichee Lake.
| Location | |
|---|---|
  Hermiston-McCauley Mine Location in Ontario | |
| Location | Temagami |
| Province | Ontario |
| Country | Canada |
| Coordinates | 47°05′54.30″N 79°49′38.18″W / 47.0984167°N 79.8272722°W |
| Production | |
| Products | Gold |
| History | |
| Opened | 1936 |
| Closed | 1938 |
History edit
Hermiston-McCauley was the subject of quartz reef mining. From 1936 to 1938, a 115.1 m (378 ft) three compartment mine shaft was created. Three levels were created, two of which had 1,853.1 m (6,080 ft) of lateral work.[1]
Geology edit
Hermiston-McCauley Mine is on the northwestern side of the Net Lake-Vermilion Lake Deformation Zone. This is a northeast–southwest trending high strain zone that separates rocks of the Older and Younger volcanic complexes, which in turn comprise the Temagami Greenstone Belt.[1]
Reserves at Hermiston-McCauley have been variously estimated at 31,000 tons averaging 0.275 oz (7.8 g) of gold per ton, 45,700 tons averaging 0.30 oz (8.5 g) of gold per ton over 1 m (3.3 ft), or 9,000 tons averaging 0.5 oz (14 g) of gold per ton over 0.91 m (3.0 ft). A main and subsidiary quartz-rich zone occur in a ruptured diorite intrusion, which intrudes felsic volcanic rocks in a northwesterly direction with the strike of the Net Lake-Vermilion Lake Deformation Zone. The main quartz vein is at least 76.1 m (250 ft) long and up to 1.5 m (4.9 ft) wide. Pyrite with chalcopyrite and gold occupies quartz veins as blebs and small veins.[1]
See also edit
References edit
- ^ a b c Cameron, Driffield (1998-01-03). "Arsenic Lake Property". Burlington, Ontario: Geological Association of Canada: 5, 6. AFRI 31M04SW2001.
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