mineral
White banded calcite
Calcite (CaCO₃)
AI-generated identification · may be incorrectLikely hardness 3 Mohs; white to pale gray with translucent bands and a vitreous-to-pearly luster. Calcite is trigonal and has prominent rhombohedral cleavage; the image suggests a broken, possibly wet specimen.
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Physical properties
Likely hardness 3 Mohs; white to pale gray with translucent bands and a vitreous-to-pearly luster. Calcite is trigonal and has prominent rhombohedral cleavage; the image suggests a broken, possibly wet specimen.
Formation & geological history
Forms by precipitation from carbonate-rich water, in veins and cavities, or in sedimentary limestone; age depends on the deposit and cannot be determined from the image.
Uses & applications
Used in cement and lime production, as a construction stone, and as a collecting specimen; clear optical calcite has specialty uses.
Geological facts
Calcite effervesces in dilute hydrochloric acid and is easily scratched by a copper coin. The specimen’s broad, pale banding is consistent with calcite, though identification from the image alone is uncertain.
Field identification & locations
Look for rhombohedral cleavage, softness, and acid reaction; common in limestone regions and hydrothermal veins worldwide. Avoid confusing it with harder, glassier quartz.
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Undetermined; the image is too blurry for reliable identification
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