mineral

Honey calcite (likely)

Calcite, calcium carbonate (CaCO₃)

AI-generated identification · may be incorrect

Translucent cream-to-honey yellow with vitreous to pearly luster, prominent rhombohedral cleavage, and uneven fracture; Mohs hardness 3, specific gravity about 2.71. The crystal structure is trigonal. Visible sparkle and cleavage distinguish it from quartz, which is harder and lacks cleavage.

Identified September 16, 2026More mineral →

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Physical properties

Formation & geological history

Forms when calcium-rich groundwater precipitates in cavities, veins, caves, and sedimentary or hydrothermal settings; coloration commonly comes from iron or organic inclusions. Its formation age is locality-dependent, ranging from recent cave growth to ancient Paleozoic–Mesozoic deposits.

Uses & applications

Used as an ornamental and lapidary stone, educational specimen, and minor industrial source of lime and calcium carbonate; it is generally too soft for durable jewelry.

Geological facts

Calcite effervesces strongly with dilute hydrochloric acid or vinegar, especially on a freshly powdered or scratched surface. It commonly shows birefringence, producing doubled images through clear pieces.

Field identification & locations

Common localities include Mexico, Iceland, the United States, Brazil, and China. Identify it by rhombohedral cleavage, low hardness, and acid reaction; avoid scratching or prolonged moisture exposure.