mineral

Honey calcite (orange calcite)

Calcite, calcium carbonate (CaCO₃)

AI-generated identification · may be incorrect

Typically honey-yellow to orange, translucent, with vitreous to pearly luster and prominent rhombohedral cleavage; Mohs hardness 3, trigonal crystal system, specific gravity about 2.71. The specimen appears naturally broken or lightly shaped, with cloudy inclusions and cleavage surfaces.

Identified September 14, 2026More mineral →

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Physical properties

Formation & geological history

Forms in limestone, hydrothermal veins, cavities, and sedimentary carbonate deposits through precipitation or recrystallization; calcite ranges from Precambrian to modern geological ages. Its amber color commonly comes from iron staining or organic inclusions.

Uses & applications

Used for cement, lime, construction aggregate, soil treatment, and chemical manufacture; clear crystals are collected and occasionally used decoratively, but calcite is too soft for most jewelry.

Geological facts

Calcite effervesces readily in dilute hydrochloric acid and shows strong birefringence, producing doubled images through clear pieces. It is one of Earth’s most abundant carbonate minerals.

Field identification & locations

Identify by its softness, rhombohedral cleavage, light color, and acid reaction; common in Mexico, Brazil, Iceland, the United States, and many limestone regions. Avoid prolonged water or abrasion because surfaces scratch easily.