mineral
Orange Calcite
Calcium Carbonate (CaCO3)
Mohs hardness: 3; Color: Orange/Honey; Luster: Vitreous to waxy; Crystal system: Trigonal/Hexagonal; Cleavage: Perfect rhombohedral; Specific gravity: 2.71
- Hardness
- 3
- Color
- Orange/Honey
- Luster
- Vitreous to waxy
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Physical properties
Mohs hardness: 3; Color: Orange/Honey; Luster: Vitreous to waxy; Crystal system: Trigonal/Hexagonal; Cleavage: Perfect rhombohedral; Specific gravity: 2.71
Formation & geological history
Formed through sedimentary processes, primarily from the chemical precipitation of calcium carbonate in marine environments or through metamorphic recrystallization of limestone.
Uses & applications
Mainly used for lapidary work, decorative carving, and as a popular specimen for metaphysical collectors. Historically used in limestone for construction and industrial chemicals.
Geological facts
Calcite is the most common form of natural calcium carbonate. It is known for its property of double refraction, where light passing through a clear piece splits into two rays.
Field identification & locations
Identified in the field by its softness (can be scratched by a copper coin) and its strong reaction (effervescence) to weak hydrochloric acid. Found globally in limestone deposits and hydrothermal veins.
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