Calcite
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Mineral NameCalcite
Chemical FormulaCaCO3
Mohs Hardness3
Crystal Systemtrigonal
Lustervitreous
Streak Colorwhite
Cleavageperfect rhombohedral (3 directions)
Fractureconchoidal
Specific Gravity2.71
Colorsclear, white, yellow
Transparencytransparent
Type LocalityWorldwide
Mineral GroupCarbonates
Usesconstruction, industrial, optical, collector
Associated Mineralsquartz, fluorite, pyrite
Raritycommon
Description
Calcite is a common mineral, often forming clear to white rhombohedral crystals or massive aggregates, easily identifiable by its perfect cleavage and relatively low hardness.
Geological Context
It is a primary component of sedimentary rocks like limestone and marble, forms in hydrothermal veins, and can be found as a secondary mineral in various igneous and metamorphic settings.
