mineral
Green Calcite
Calcium Carbonate (CaCO3)
Hardness: 3 on Mohs scale, Color: Pale to vibrant green, Luster: Vitreous to pearly, Crystal System: Trigonal, Cleavage: Perfect rhombohedral in three directions, Specific Gravity: 2.71
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Physical properties
Hardness: 3 on Mohs scale, Color: Pale to vibrant green, Luster: Vitreous to pearly, Crystal System: Trigonal, Cleavage: Perfect rhombohedral in three directions, Specific Gravity: 2.71
Formation & geological history
Forms mainly in sedimentary environments through the precipitation of calcium carbonate from water solutions, or via hydrothermal veins and low-grade metamorphic processes.
Uses & applications
Used in decorative items, lapidary arts, mineral collecting, and often utilized in alternative healing and meditation practices.
Geological facts
Green calcite gets its characteristic color from trace amounts of green minerals or green clay incorporated during its formation. Like all calcites, it reacts strongly with dilute hydrochloric acid by effervescing.
Field identification & locations
Can be easily identified in the field by its softness (easily scratched with a copper penny), rhombohedral cleavage, and strong reaction to acid. Common worldwide, with significant deposits found in Mexico, Brazil, and the USA.
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