Calcite - Mineral Properties, Photos and Occurence
2018-8-11 · Physical properties of calcite. Pure calcite is transparent and colorless but also occurs in white, gray, yellow, orange, red, brown, black, or rarely, also blue. Calcite defines the hardness 3 on Mohs scale with specific gravity 2.71 g/cm 3. It has vitreous luster and perfect cleavage in three dimensions.