mineral

Honey calcite (orange calcite)

Calcite, calcium carbonate (CaCO₃)

AI-generated identification · may be incorrect

Typically translucent honey-yellow to orange, with vitreous to pearly luster and prominent rhombohedral cleavage; Mohs hardness 3, white streak, and specific gravity about 2.71. The irregular blocky shape and internal cleavage are consistent with rough calcite.

Identified August 16, 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 results from iron or other trace impurities. Specimen age depends on its deposit, ranging from recent to hundreds of millions of years.

Uses & applications

Used for cement, lime, agricultural soil treatment, and chemical production; attractive transparent pieces are sold as decorative or metaphysical specimens. It is too soft for most jewelry but may be used in protected cabochons.

Geological facts

Calcite effervesces strongly with dilute hydrochloric acid or vinegar, though vinegar may react slowly. It is strongly birefringent: transparent pieces can show doubled text when placed over printed material.

Field identification & locations

Commonly found in Mexico, the United States, Brazil, Iceland, and China. Confirm with hardness, rhombohedral cleavage, and acid reaction; avoid confusing it with harder orange quartz or glass.