metamorphic
White Marble
Recrystallized Calcite (CaCO3)
Hardness: 3 on Mohs scale; Color: Pure white to milky white; Luster: Vitreous to pearly; Crystal structure: Trigonal/Hexagonal (granular texture); Cleavage: Perfect rhombohedral (visible in crystalline grains); Specific Gravity: 2.7
- Hardness
- 3 on Mohs scale
- Color
- Pure white to milky white
- Luster
- Vitreous to pearly
Identified More metamorphic →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 3 on Mohs scale; Color: Pure white to milky white; Luster: Vitreous to pearly; Crystal structure: Trigonal/Hexagonal (granular texture); Cleavage: Perfect rhombohedral (visible in crystalline grains); Specific Gravity: 2.7
Formation & geological history
Formed through the regional or contact metamorphism of sedimentary limestone or dolostone. Under high pressure and temperature, the carbonate minerals recrystallize into a dense interlocking mosaic of crystals. Age varies globally from Precambrian to Cenozoic.
Uses & applications
Used in high-end construction, interior design (countertops, flooring), sculpture due to its soft workability, acid neutralization in chemical industries, and as a cosmetic filler.
Geological facts
Pure white marble is the result of metamorphism of a very pure (silicate-poor) limestone. The iconic Taj Mahal is constructed entirely of white Makrana marble, which is known for its durability and translucency.
Field identification & locations
Identify in the field by its sugary, crystalline texture and its reaction (fizzing) when exposed to dilute hydrochloric acid. It can be scratched by a copper penny but not by a fingernail. Found in mountainous or tectonic regions like Italy (Carrara), Greece, and Vermont, USA.
More like this
