mineral
Banded Calcite
Calcium Carbonate (CaCO3)
AI-generated identification · may be incorrectHardness of 3 on the Mohs scale, exhibits strong banding in white, brown, and pink tones with a vitreous to pearly luster. It has a rhombohedral crystal structure and perfect cleavage.
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Physical properties
Hardness of 3 on the Mohs scale, exhibits strong banding in white, brown, and pink tones with a vitreous to pearly luster. It has a rhombohedral crystal structure and perfect cleavage.
Formation & geological history
Formed through the precipitation of calcium carbonate from mineral-rich waters in caves, hot springs, or fracture fillings over thousands to millions of years.
Uses & applications
Commonly used for ornamental carvings, decorative objects, polished display specimens, and in metaphysics.
Geological facts
Often marketed commercially as 'onyx' or 'Mexican onyx' due to its similar appearance, though it is actually a softer carbonate mineral.
Field identification & locations
Easily identified by its distinct color banding, softness (can be scratched easily with a knife), and strong effervescence when exposed to dilute hydrochloric acid.
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