Calcite and Aurichalcite

An exceptionally pretty piece with combinations of aurichalcite surficially as well as included in individual crystals of calcite as well as calcite clusters forming radial clusters appearing as donuts. Just the right amount of brown matrix to offset. Ex Jim and Paula Wilson.

Locality: Hidden Treasure Mine, Ophir Mining District, Tooele County, Utah

Composition: calcium carbonate with copper zinc carbonate hydroxide