mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
Hardness of 3 on the Mohs scale, pale yellow to golden color, vitreous to pearly luster, trigonal crystal system, perfect rhombohedral cleavage, specific gravity of approximately 2.71.
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Physical properties
Hardness of 3 on the Mohs scale, pale yellow to golden color, vitreous to pearly luster, trigonal crystal system, perfect rhombohedral cleavage, specific gravity of approximately 2.71.
Formation & geological history
Formed in sedimentary, metamorphic, and igneous environments, commonly precipitating from aqueous solutions or hydrothermal veins. Found globally in limestone deposits and cave formations.
Uses & applications
Used in ornamental carvings, crystal collecting, metaphysical applications, and industrial lime production.
Geological facts
Calcite exhibits strong double refraction (birefringence), meaning objects viewed through a clear specimen appear doubled. It is the primary constituent of limestone and marble.
Field identification & locations
Easily identified by its characteristic rhombohedral cleavage and effervescence (fizzing) when exposed to weak hydrochloric acid. Commonly sourced from Mexico, Madagascar, and the USA.
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