metamorphic
Onyx Marble
Calcite (CaCO3) or Aragonite
AI-generated identification · may be incorrectHardness of 3 on the Mohs scale, translucent appearance, vitreous to waxy luster, and commonly displays banding in various cream and brownish tones.
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Physical properties
Hardness of 3 on the Mohs scale, translucent appearance, vitreous to waxy luster, and commonly displays banding in various cream and brownish tones.
Formation & geological history
Formed by the precipitation of carbonate minerals from cold-water solutions in caves or hot springs, creating stalagmites and stalactites.
Uses & applications
Widely used for decorative tiles, interior design, carved sculptures, and luxury home accessories.
Geological facts
Commercial 'onyx' is actually a banded form of calcite, distinct from true mineralogical onyx which is a variety of chalcedony.
Field identification & locations
Identified by its softness, acid effervescence, and high translucency when backlit; sourced globally from countries like Pakistan, Mexico, and Egypt.
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