mineral

Likely pink-orange calcite (rough specimen)

Calcite, calcium carbonate (CaCO₃)

AI-generated identification · may be incorrect

Pale peach to orange, translucent in thin areas, with a dull-to-glassy luster and blocky cleavage; Mohs hardness 3. The photo does not show enough detail for definitive identification.

Identified September 26, 2026More mineral →

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Physical properties

Pale peach to orange, translucent in thin areas, with a dull-to-glassy luster and blocky cleavage; Mohs hardness 3. The photo does not show enough detail for definitive identification.

Formation & geological history

Calcite commonly precipitates from mineral-rich groundwater or forms in limestone and hydrothermal veins; such deposits range from recent to hundreds of millions of years old.

Uses & applications

Used to make cement and lime, as an industrial filler, and as a collectible or decorative mineral.

Geological facts

Calcite effervesces in dilute acid and has perfect rhombohedral cleavage; orange color can result from iron impurities.

Field identification & locations

Look for softness, cleavage into rhomb-shaped pieces, and acid fizz; common in limestone caves and veins worldwide. A small rough specimen like this is typically worth about $2–$15 USD.