mineral

Honey calcite (orange calcite)

Calcite, calcium carbonate (CaCO₃)

AI-generated identification · may be incorrect

Typically honey-yellow to orange, translucent, with vitreous to pearly luster and prominent rhombohedral cleavage; Mohs hardness 3, specific gravity about 2.71. The specimen appears rough-cleaved and massive rather than well-crystallized.

Identified August 28, 2026More mineral →

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Physical properties

Formation & geological history

Forms when calcium-rich fluids precipitate carbonate in veins, cavities, sedimentary beds, and hydrothermal environments; orange color commonly comes from iron or other trace impurities. Calcite occurs from ancient to modern geological settings.

Uses & applications

Used for cement, lime, aggregate, and neutralizing acidic materials; transparent orange pieces are sold as decorative or metaphysical specimens. It is generally too soft for durable jewelry.

Geological facts

Calcite effervesces strongly in dilute hydrochloric acid and shows birefringence, producing doubled images through clear pieces. It is distinct from orange aragonite, which has different crystal symmetry and cleavage.

Field identification & locations

Identify by its softness, rhombohedral cleavage, and vigorous acid reaction; avoid vinegar, which may react weakly. Common sources include Mexico, the United States, Brazil, and China.