Coimadai (pronounced come-ida) Antimony mine is on Pyrete Creek, a tributary of Goodman's Creek, about 15 km NNE of Bacchus Marsh. It consists of two lodes, Draper's and Bondison's. The deposits were discovered in 1887 and worked intermittently until 1915, then operated again between 1942 and 1944.
The deposits occur in Lower Ordovician sandstones and slates. The lodes occur in fault zones in intensly sheared rock. Today, collecting is on the dumps and along the creek bed. Permission is required as the area is in a water catchment.
Mineral List
9 entries listed. 8 valid minerals.
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