mineral

Honey-colored calcite

Calcite (calcium carbonate, CaCO₃)

AI-generated identification · may be incorrect

Translucent pale yellow to honey-colored material with vitreous to pearly luster and prominent cleavage surfaces; likely Mohs hardness 3, rhombohedral crystal structure, and specific gravity about 2.71. The flat, sparkling break surfaces are consistent with calcite, though aragonite or yellow quartz are less likely.

Identified August 20, 2026More mineral →

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Physical properties

Formation & geological history

Usually forms in limestone cavities, hydrothermal veins, and evaporitic settings through precipitation from calcium-rich fluids. Calcite occurs from ancient to modern geological ages and is common in Yemen’s sedimentary and volcanic terrains near 15.2°N, 44.2°E.

Uses & applications

Used for cement, lime, aggregate, soil treatment, and chemical production; transparent honey calcite is also collected as a decorative mineral. This specimen is probably worth about $2–$15 unless it has unusually clear crystal form.

Geological facts

Calcite effervesces vigorously with dilute hydrochloric acid or strong vinegar, unlike quartz. It commonly shows perfect rhombohedral cleavage and may display double refraction through clear areas.

Field identification & locations

Identification can be checked by its softness— a steel knife scratches it—and acid reaction. Common sources include limestone and hydrothermal veins; avoid confusing it with amber or glass, which lack calcite cleavage.