mineral

Pink calcite

Calcite (CaCO₃), likely manganese-bearing

AI-generated identification · may be incorrect

Typically Mohs hardness 3, white to salmon-pink color, vitreous to pearly luster, transparent to translucent, and excellent rhombohedral cleavage; the specimen appears as a rough cleavage fragment with possible dark matrix inclusions.

Identified August 30, 2026More mineral →

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Physical properties

Formation & geological history

Forms chiefly in hydrothermal veins, cavities, and sedimentary carbonate rocks; pink coloration commonly results from manganese or other trace elements. Individual specimens may form at various ages, generally from Phanerozoic hydrothermal or carbonate settings.

Uses & applications

Used industrially in cement, lime, agriculture, and chemical production; attractive pink specimens are collected as display minerals, though this rough piece has limited gem use.

Geological facts

Calcite effervesces vigorously in dilute hydrochloric acid and can show strong birefringence, producing doubled images through clear pieces. Its rhombohedral cleavage distinguishes it from quartz, which is harder and lacks cleavage.

Field identification & locations

Common localities include Mexico, Peru, the United States, Brazil, and China. Identify it by its softness, rhombohedral cleavage, and acid reaction; the pictured specimen may include pale matrix or mineral coatings.