mineral
Orange calcite
Calcite (CaCO₃)
AI-generated identification · may be incorrectOrange to honey-colored, cloudy and somewhat translucent with a vitreous to pearly luster; Mohs hardness 3, trigonal crystal system, and perfect rhombohedral cleavage. The tumbled appearance obscures its natural crystal shape.
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Physical properties
Orange to honey-colored, cloudy and somewhat translucent with a vitreous to pearly luster; Mohs hardness 3, trigonal crystal system, and perfect rhombohedral cleavage. The tumbled appearance obscures its natural crystal shape.
Formation & geological history
Likely formed as a sedimentary or hydrothermal deposit from calcium-rich waters; calcite occurs in rocks of many ages and settings.
Uses & applications
Used as a decorative and collectible stone, and industrially in cement, lime, and agricultural products; this small piece is mainly ornamental.
Geological facts
Calcite effervesces readily in dilute acid and can be scratched with a steel knife. Orange coloration commonly comes from iron-bearing impurities.
Field identification & locations
Look for softness, rhombohedral cleavage, and vigorous fizz with a drop of dilute acid; calcite is widespread in limestone, caves, and hydrothermal veins. The photo alone cannot confirm the identification.
