mineral
Green Calcite
Calcium Carbonate (CaCO3)
Hardness: 3 (Mohs scale), Color: pale green to lime green, Luster: vitreous to waxy, Crystal structure: Trigonal/Rhombohedral, Cleavage: Perfect rhombohedral. It has a distinctive ‘soapy’ or waxy feel when handled.
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Physical properties
Hardness: 3 (Mohs scale), Color: pale green to lime green, Luster: vitreous to waxy, Crystal structure: Trigonal/Rhombohedral, Cleavage: Perfect rhombohedral. It has a distinctive ‘soapy’ or waxy feel when handled.
Formation & geological history
Forms through chemical precipitation in sedimentary environments, or as a secondary mineral in igneous and metamorphic rocks. Often originates from the evaporation of calcium-rich water or in marine settings.
Uses & applications
Used as an ornamental stone, a specimen for crystal healing collections, and historically in the production of lime and cement. High-purity calcite is used in optical instruments.
Geological facts
Calcite is one of the most common minerals on Earth and the primary constituent of limestone and marble. Green calcite specifically is popular in metaphysical circles where it is associated with emotional balance and growth.
Field identification & locations
Can be identified in the field by its softness (it can be scratched by a copper penny) and its vigorous effervescence (bubbling) when in contact with dilute hydrochloric acid. Commonly found in Mexico and Brazil.
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