mineral

Green Calcite

Calcium Carbonate (CaCO3)

Hardness: 3 on Mohs scale. Color: Pale green to lime green with white/translucent bands. Luster: Vitreous to waxy/greasy. Crystal Structure: Trigonal. Cleavage: Perfect rhombohedral in three directions.

Hardness: 3 on Mohs scale
Color: Pale green to lime green with white/translucent bands
Luster: Vitreous to waxy/greasy

Identified April 16, 2026More mineral →

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Physical properties

Formation & geological history

Formed through sedimentary processes or hydrothermal activity where calcium-rich solutions precipitate. It is commonly found in massive forms rather than distinct crystals in these larger specimens.

Uses & applications

Predominantly used for ornamental purposes, lapidary carvings, decorative 'healing' crystals, and as a source of lime in industrial agriculture.

Geological facts

Calcite is one of the most common minerals on Earth, but the green variety is specifically valued for its calming color. It will react and fizz (effervesce) if it comes into contact with even a weak acid like vinegar.

Field identification & locations

Identify by its 'soapy' or waxy feel and its softness—it can be easily scratched by a copper penny or a steel knife. Common locations include Mexico and Brazil.