Copper
Quincy Mine, Quincy Township, Houghton County, Michigan, USA
This is an incredible, important, matrix copper-calcite specimen from the late 1800s. It is classic material, but seldom do we see such aesthetically fine, and matrix, specimens! The crystals are lustrous, gemmy, and pristine! The cluster measures 3.5 inches across, with crystals to 2 inches (and doubly-terminated). The matrix is a heavy mix of ...
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