mineral

Pink calcite

Calcite — CaCO₃

AI-generated identification · may be incorrect

Typically pale pink to salmon, with a glassy to pearly luster and prominent rhombohedral cleavage; Mohs hardness 3, white streak, and specific gravity about 2.71. The specimen appears as a rough, cleavage-broken translucent to opaque crystal or massive fragment.

Identified August 16, 2026More mineral →

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Physical properties

Formation & geological history

Forms commonly in hydrothermal veins, carbonate caves, and sedimentary limestone or marble environments, often colored pink by manganese or iron impurities. Its age depends on the host deposit, ranging from recent cave growth to ancient Paleozoic or older carbonate rocks.

Uses & applications

Used as a carbonate mineral in cement, lime, agricultural soil treatment, and chemical production; attractive transparent or strongly colored crystals are collected, though it is generally too soft for durable jewelry.

Geological facts

Calcite effervesces vigorously with dilute hydrochloric acid or vinegar, unlike many look-alike pink minerals. It shows strong birefringence, producing doubled images when viewed through a clear fragment.

Field identification & locations

Identify by rhombohedral cleavage, low hardness, and acid reaction; common sources include Mexico, Peru, the United States, China, and Morocco. Avoid confusing it with pink halite or quartz, which have different cleavage and hardness.