mineral
Tumbled orange calcite
Calcite (CaCO₃)
AI-generated identification · may be incorrectHoney-yellow to orange, translucent, with a vitreous to pearly luster; Mohs hardness 3 and trigonal crystal structure. The rounded shape and surface shine indicate it has been tumbled and polished; the photo alone cannot confirm mineral identity.
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Physical properties
Honey-yellow to orange, translucent, with a vitreous to pearly luster; Mohs hardness 3 and trigonal crystal structure. The rounded shape and surface shine indicate it has been tumbled and polished; the photo alone cannot confirm mineral identity.
Formation & geological history
Calcite forms in sedimentary rocks, hydrothermal veins, and caves, commonly precipitating from calcium-rich water. Its age depends on its source deposit; tumbling is a modern finishing process.
Uses & applications
Used as a decorative and collectible stone; calcite also serves as a major industrial source of lime and cement ingredients.
Geological facts
Calcite effervesces in dilute acid and can be scratched with a copper coin, useful checks for a suspected specimen.
Field identification & locations
Orange calcite occurs in many regions, including Mexico, the United States, and parts of Europe. Look for softness and acid reaction, but note that coatings or other orange minerals can resemble it.
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Undetermined; the image is too blurry for reliable identification
mineral