mineral

Orange calcite (likely honey/orange calcite)

Calcite, calcium carbonate (CaCO₃)

AI-generated identification · may be incorrect

Typically translucent orange with vitreous to pearly luster; Mohs hardness 3, perfect rhombohedral cleavage, and trigonal crystal structure. The rough, irregular piece appears naturally fractured or lightly shaped.

Identified September 19, 2026More mineral →

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Physical properties

Formation & geological history

Forms in limestone, hydrothermal veins, caves, and sedimentary cavities, commonly gaining orange color from iron or other trace impurities. Calcite deposits range from ancient to geologically modern.

Uses & applications

Used for cement, lime, construction aggregate, soil treatment, and optical/calibration materials; attractive orange specimens are sold for collecting and décor, but are generally unsuitable for jewelry because of softness and cleavage.

Geological facts

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

Field identification & locations

Common localities include Mexico, the United States, Brazil, Peru, and China. Confirm with hardness, rhombohedral cleavage, and acid reaction; avoid confusing it with orange aragonite, amber, or resin.