mineral

Pink calcite cluster

Calcite (calcium carbonate, CaCO₃)

AI-generated identification · may be incorrect

Typically pale pink to peach, translucent to transparent, with vitreous-to-pearly luster and prominent rhombohedral cleavage; Mohs hardness 3 and specific gravity about 2.71. The specimen appears as an unpolished crystal cluster, though its color could also reflect minor impurities or coating.

Identified August 23, 2026More mineral →

Explore Pink calcite cluster 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 when calcium-rich groundwater, hydrothermal fluids, or sedimentary solutions precipitate carbonate crystals, commonly in cavities and veins. Calcite occurs from Precambrian rocks to modern deposits; exact age cannot be determined visually.

Uses & applications

Used industrially for cement, lime, aggregate, soil conditioning, and chemical manufacture; transparent colored crystals are collected or occasionally used ornamentally, but calcite is too soft for most jewelry.

Geological facts

Calcite effervesces vigorously with dilute hydrochloric acid and shows strong birefringence, producing doubled images through clear pieces. Pink coloration may result from manganese or other trace elements.

Field identification & locations

Common localities include Mexico, the United States, Peru, Brazil, and China; identify it by rhombohedral cleavage, softness, and acid reaction. This appears to be a mounted display specimen rather than a natural field sample.