mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Hardness: 3 on Mohs scale; Color: Orange to honey-gold; Luster: Vitreous to waxy; Crystal structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral; Specific gravity: 2.71

Hardness: 3 on Mohs scale
Color: Orange to honey-gold
Luster: Vitreous to waxy

Identified March 15, 2026More mineral →

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Physical properties

Hardness: 3 on Mohs scale; Color: Orange to honey-gold; Luster: Vitreous to waxy; Crystal structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral; Specific gravity: 2.71

Formation & geological history

Formed through sedimentary processes or hydrothermal activity. Often found in massive forms within limestone or marble deposits throughout various geological eras including the Phanerozoic eon.

Uses & applications

Commonly used as a decorative stone, in lapidary work for cabochons and carvings, and as a popular specimen for metaphysical collectors.

Geological facts

Calcite is the most common form of calcium carbonate. High-quality orange specimens often exhibit a 'waxy' texture that feels almost like soap or plastic to the touch.

Field identification & locations

Identifiable by its 3-way cleavage and reaction (fizzing) to diluted hydrochloric acid. Commonly found in Mexico, Brazil, and the USA. Collectors look for vibrant saturation and translucency.