mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Hardness: 3 on Mohs scale; Color: pale orange to deep amber; Luster: vitreous to waxy/pearly; Crystal structure: Trigonal/Hexagonal; Cleavage: Perfect rhombohedral; Specific Gravity: 2.71

Hardness: 3 on Mohs scale
Color: pale orange to deep amber
Luster: vitreous to waxy/pearly

Identified July 13, 2026More mineral →

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Physical properties

Hardness: 3 on Mohs scale; Color: pale orange to deep amber; Luster: vitreous to waxy/pearly; Crystal structure: Trigonal/Hexagonal; Cleavage: Perfect rhombohedral; Specific Gravity: 2.71

Formation & geological history

Formed through sedimentary processes, primarily from the shells of marine organisms or precipitation from calcium-rich groundwater in caves or hot springs.

Uses & applications

Used as an ornamental stone, in carvings, as a source of lime for agriculture, and in the chemical industry. Highly popular in metaphysical and crystal collecting circles.

Geological facts

Calcite is one of the most common minerals on Earth. Its name is derived from the Greek word 'chalix' meaning lime. It exhibits double refraction when clear.

Field identification & locations

Identify by its orange hue, waxy feel, and rhombohedral cleavage. In the field, it will react (fizz) vigorously when exposed to weak hydrochloric acid. Commonly found in Mexico and Brazil.