Hermiston-McCauley Mine is a large abandoned underground gold mine in Strathy Township of Temagami, Northeastern Ontario, Canada.

From 1936 to 1938, a 115.1 m (378 ft) three compartment mine shaft was created.

[1] 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.

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.