07808 - Top Beautiful 3.23 Inch Calcite Crystals from South Morocco
$88.17
Sale price
$88.17
Regular price
$114.50
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07808 - Top Beautiful 3.23 Inch Calcite Crystals from South Morocco
$88.17
Sale price
$88.17
Regular price
$114.50
Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (CaCO3). The Mohs scale of mineral hardness, based on scratch 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.