mineral
Orange calcite
Calcite (CaCO₃)
AI-generated identification · may be incorrectSmall translucent orange fragment with a vitreous luster and irregular to cleavage-like surfaces. Mohs hardness 3; trigonal crystal system, perfect rhombohedral cleavage, and specific gravity about 2.7.
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Physical properties
Small translucent orange fragment with a vitreous luster and irregular to cleavage-like surfaces. Mohs hardness 3; trigonal crystal system, perfect rhombohedral cleavage, and specific gravity about 2.7.
Formation & geological history
Forms when calcium-carbonate-rich fluids precipitate in veins, cavities, and sedimentary settings; calcite occurs in rocks of many geological ages. The orange color commonly comes from trace iron or other impurities.
Uses & applications
Used as a decorative and collector mineral; calcite is also important in cement, lime, and agricultural applications.
Geological facts
Calcite effervesces in dilute acid and displays strong double refraction in clear crystals.
Field identification & locations
Look for its relatively soft surface, rhombohedral cleavage, and fizz with dilute acid; orange calcite is found in many mineral localities worldwide. The image alone cannot confirm the identification.
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