Minerals identify

Know how to recognize them

Calcite

Carbonate mineral

Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (CaCO3). The Mohs scale of mineral hardness hardness comparison , defines value 3 as "calcite".

Other polymorphs of calcium carbonate are the minerals aragonite and vaterite. Aragonite will change to calcite over timescales of days or less at temperatures exceeding 300 °C, and vaterite is even less stable.

Identification

Color of mineral

White
Yellow
Red
Orange
Blue
Green
Brown
Grey

Mohs scale ( mineral hardness )

3

Density ( specific gravity )

1.64
1.486

Luster ( interacts light )

Pearly
Vitreous

Crystal ( diaphaneity )

Trigonal