mineral
Green Banded Calcite
Calcium Carbonate (CaCO3)
AI-generated identification · may be incorrectMohs hardness of 3; displays soft green and white bands with brownish iron streaks; vitreous to pearly luster; trigonal crystal system with perfect rhombohedral cleavage.
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Physical properties
Mohs hardness of 3; displays soft green and white bands with brownish iron streaks; vitreous to pearly luster; trigonal crystal system with perfect rhombohedral cleavage.
Formation & geological history
Formed through the precipitation of calcium carbonate in low-temperature aqueous environments like caves or hot springs, often resulting in stalagmitic or vein deposits.
Uses & applications
Widely used for decorative objects, carved sculptures, tumbled stones, and holistic crystal healing practices.
Geological facts
Trade-named as 'green onyx' in the commercial market, though it is scientifically calcite rather than true quartz onyx.
Field identification & locations
Easily identified by its distinct banding, low hardness that scratches easily with a knife, and strong effervescence when tested with dilute hydrochloric acid.
