mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Hardness: 3 on Mohs scale; Color: Orange, pale yellow to deep amber; Luster: Vitreous to waxy/pearly; Crystal structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral in three directions; Specific gravity: 2.71

Hardness: 3 on Mohs scale
Color: Orange, pale yellow to deep amber
Luster: Vitreous to waxy/pearly

Identified April 6, 2026More mineral →

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Physical properties

Formation & geological history

Formed through sedimentary processes, often in marine environments via chemical precipitation or as a hydrothermal mineral in veins and cavities. It is common in limestone and marble deposits.

Uses & applications

Used in the manufacturing of cement and lime, as an acid neutralizer in the chemical industry, in soil remediation, and widely as a decorative stone for lapidary work and metaphysical collecting.

Geological facts

Orange calcite is often called the 'stone of creativity' in metaphysical circles. It can show strong fluorescence under UV light and displays the optical property of double refraction (birefringence).

Field identification & locations

Identify in the field by its softness (can be scratched by a copper coin or knife) and its habit of reacting (fizzing) immediately with cold dilute hydrochloric acid. It often has a soapy or waxy feel when polished or tumbled.