mineral
Likely calcite crystal fragment
Calcite (CaCO₃)
AI-generated identification · may be incorrectPale honey-colored, translucent with a vitreous-to-pearly luster and prominent stepped cleavage surfaces. Calcite has Mohs hardness 3, trigonal crystal structure, perfect rhombohedral cleavage, and specific gravity about 2.7.
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Physical properties
Pale honey-colored, translucent with a vitreous-to-pearly luster and prominent stepped cleavage surfaces. Calcite has Mohs hardness 3, trigonal crystal structure, perfect rhombohedral cleavage, and specific gravity about 2.7.
Formation & geological history
Likely formed as a low-temperature crystal in a sedimentary cavity or vein; calcite occurs in rocks of many ages. The photo alone cannot determine its exact geological setting or age.
Uses & applications
Calcite is used to make cement and lime, as an industrial mineral, and as a collector specimen; transparent material may be cut, though it is soft.
Geological facts
Calcite effervesces in dilute hydrochloric acid and can show double refraction in clear pieces.
Field identification & locations
The translucent color and obvious cleavage are consistent with calcite, but identification is uncertain from the image; hardness and an acid test can help distinguish it from similar minerals. Common worldwide in limestone, caves, and hydrothermal veins.
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