mineral

Honey calcite (orange calcite)

Calcite — calcium carbonate, CaCO₃

AI-generated identification · may be incorrect

Translucent honey-orange material with vitreous to pearly luster and prominent rhombohedral cleavage; Mohs hardness 3, specific gravity about 2.71. The irregular white areas are likely cleavage surfaces or carbonate coating/inclusions.

Identified August 10, 2026More mineral →

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Physical properties

Formation & geological history

Forms when calcium-rich groundwater precipitates carbonate in cavities, veins, sedimentary beds, and hydrothermal environments; calcite deposits range from recent to Paleozoic and older. The exact locality and age cannot be determined from the image.

Uses & applications

Used for cement, lime, aggregate, optical demonstrations, and ornamental specimens; translucent pieces are collected but are generally not suitable for jewelry because calcite scratches easily.

Geological facts

Calcite strongly effervesces with dilute hydrochloric acid and shows birefringence (“double refraction”) through clear pieces. Orange color commonly results from iron or other impurities.

Field identification & locations

Likely calcite rather than quartz because of its soft, easily cleaved appearance and warm amber color. Confirm with a scratch test against a copper coin or knife and an acid test on an inconspicuous spot; common sources include Mexico, the United States, Iceland, and China.