mineral

Honey calcite (orange calcite)

Calcite — calcium carbonate, CaCO₃

AI-generated identification · may be incorrect

Typically amber-yellow to orange, translucent to opaque, with a glassy to pearly luster and granular crystalline texture. Mohs hardness 3, rhombohedral cleavage, specific gravity about 2.71; weakly effervesces in dilute hydrochloric acid.

Identified August 22, 2026More mineral →

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Physical properties

Formation & geological history

Forms by precipitation from carbonate-rich groundwater, hydrothermal fluids, or limestone alteration; orange color commonly comes from iron or other impurities. Specimen age cannot be determined from the image and may range from recent cavity growth to ancient sedimentary settings.

Uses & applications

Used as a carbonate raw material for cement, lime, aggregate, and chemical production; attractive transparent pieces are sold as decorative or collecting specimens. It is generally too soft for durable jewelry.

Geological facts

Calcite is strongly birefringent, producing doubled images when viewed through a clear crystal. Its perfect rhombohedral cleavage distinguishes it from similarly colored quartz, which is much harder and lacks cleavage.

Field identification & locations

Common in limestones, caves, veins, and hydrothermal deposits worldwide, including Mexico, the United States, Iceland, and China. Confirm with hardness, rhombohedral cleavage, and acid reaction; the image alone cannot exclude yellow aragonite or iron-stained limestone.