mineral

Honey calcite (yellow calcite)

Calcite — calcium carbonate, CaCO₃

AI-generated identification · may be incorrect

Pale honey-yellow, translucent to opaque, with a glassy to pearly luster and typically massive or cleavable structure. Mohs hardness 3; excellent rhombohedral cleavage and specific gravity about 2.71. The blocky shape and pale color are consistent with calcite, though the photograph cannot confirm it definitively.

Identified August 11, 2026More mineral →

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Physical properties

Formation & geological history

Forms when calcium carbonate precipitates from groundwater, hydrothermal fluids, or limestone-forming environments; yellow coloration commonly comes from iron or other trace impurities. Individual specimens may be geologically young or derive from much older Paleozoic–Mesozoic carbonate rocks.

Uses & applications

Used to manufacture cement, lime, agricultural soil amendments, and industrial fillers; attractive transparent pieces are sold as decorative or metaphysical specimens. It is generally too soft for durable jewelry.

Geological facts

Calcite effervesces visibly in dilute hydrochloric acid or strong vinegar, unlike quartz. It shows strong birefringence, producing doubled images through clear pieces.

Field identification & locations

Test cautiously: it scratches easily with a steel knife and should not scratch glass; acid fizz and rhombohedral cleavage are diagnostic. Common worldwide, especially in limestone districts, Mexico, Iceland, the United States, and China.