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The calcite crystals are UV reactive and glow a greenish/yellow under a long-wave UV flashlight
Green Calcite Specimen
Dimensions: 4 x 2 x 2
Michigan's copper mines played a crucial role in supplying copper for the burgeoning industrialization of the United States and remain an important part of the state's history and economy
combined with its striking black color
2" Quartz with Chrysocolla from Tentadora Mine DX1570 Ring The calcite crystals are UV2" Quartz with Chrysocolla from Tentadora Mine Approx. Dimensions: 2x1x1 inches Approx. Weight: 20 grams Locality: Tentadora Mine, Huancavelica, Peru This specimen features a single, well formed quartz point coated in botryoidal chrysocolla from the Tentadora Mine in Peru, a locality known for producing some of the finest quartz and copper mineral combinations in the world. Chrysocolla is a hydrated copper silicate that forms in the oxidation zones of
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