mineral

Green calcite (likely)

Calcite, calcium carbonate (CaCO₃)

AI-generated identification · may be incorrect

Pale mint-green, translucent to semi-translucent, vitreous to pearly luster; Mohs hardness 3, excellent rhombohedral cleavage, trigonal crystal system, and specific gravity about 2.71. The sharp cleavage surfaces and soft, chalky edges are consistent with calcite, though image-only identification is provisional.

Identified August 11, 2026More mineral →

Explore Green calcite (likely) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Forms in carbonate veins, cavities, caves, and sedimentary limestone environments through precipitation from calcium-rich fluids; green color may result from trace minerals or inclusions. Calcite occurs from ancient to modern geological ages.

Uses & applications

Used in cement, lime, aggregate, glass, soil treatment, and as a mineral specimen; attractive translucent green pieces are used decoratively but are generally unsuitable for durable jewelry because of low hardness.

Geological facts

Calcite effervesces strongly with dilute hydrochloric acid or vinegar, though vinegar may react slowly. It can show double refraction through clear areas.

Field identification & locations

Common localities include Mexico, Brazil, the United States, Iceland, and China. Confirm with a steel knife scratch test and acid fizz test; avoid acid if preservation matters.