metamorphic
Black Marble
Metamorphosed Limestone (Calcite: CaCO3)
AI-generated identification · may be incorrectMohs hardness of 3, dark gray to black color with white calcite veining, sub-vitreous luster, and a fine-grained crystalline structure.
Identified More metamorphic →
Explore Black Marble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Mohs hardness of 3, dark gray to black color with white calcite veining, sub-vitreous luster, and a fine-grained crystalline structure.
Formation & geological history
Formed from the regional or contact metamorphism of sedimentary carbonate rocks, primarily limestone, over millions of years under intense heat and pressure.
Uses & applications
Widely used in high-end interior architecture, flooring, countertops, sculptural art, and decorative polished display slabs.
Geological facts
Dark coloration is typically caused by carbonaceous impurities or bitumen trapped within the original limestone during deposition.
Field identification & locations
Identified by its distinctive veining, softness, and vigorous effervescence when tested with dilute hydrochloric acid. Found globally in major metamorphic belts.
More like this
