"Group of white scalenohedral calcite crystals ("dogtooth spar") with etched faces, in a vug in an altered rock, associated with colloform crusts of white micro acicular scolecite. Golden crystalline calcite on the reverse side of the specimen. Collected by P. Tarassoff, Oct 19, 1963."
Fluoresces white under UV. The mine at Black Lake was an asbestos Mine, now long closed, that had many interesting minerals besides chrysotile.
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