mineral
Calcite crystal cluster
Calcite (CaCO₃)
AI-generated identification · may be incorrectLikely translucent to milky white with a vitreous-to-pearly luster and prominent cleavage; calcite has trigonal crystal symmetry, Mohs hardness 3, and specific gravity about 2.7. The image alone does not show enough detail to confirm the identification.
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Physical properties
Likely translucent to milky white with a vitreous-to-pearly luster and prominent cleavage; calcite has trigonal crystal symmetry, Mohs hardness 3, and specific gravity about 2.7. The image alone does not show enough detail to confirm the identification.
Formation & geological history
Calcite commonly precipitates from mineral-rich water in veins, caves, and sedimentary settings, and also forms in limestone and marble. It occurs from recent deposits to rocks hundreds of millions of years old.
Uses & applications
Calcite is used in cement, lime, construction aggregate, and industrial fillers; clear crystals are collected and occasionally cut as gemstones.
Geological facts
Calcite strongly effervesces in dilute acid and exhibits double refraction in clear crystals.
Field identification & locations
Look for soft crystals that scratch readily and react to dilute acid; common localities include limestone regions and hydrothermal veins worldwide. The pale, clustered crystals are consistent with calcite, though image identification is uncertain.
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