metamorphic
Marble
Recrystallized Calcite (CaCO3)
Hardness: 3 on Mohs scale; Color: White with grey veining; Luster: Vitreous to pearly; Crystal structure: Trigonal/hexagonal; Cleavage: Perfect rhombohedral; Specific gravity: 2.7
- Hardness
- 3 on Mohs scale
- Color
- White with grey veining
- Luster
- Vitreous to pearly
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Physical properties
Hardness: 3 on Mohs scale; Color: White with grey veining; Luster: Vitreous to pearly; Crystal structure: Trigonal/hexagonal; Cleavage: Perfect rhombohedral; Specific gravity: 2.7
Formation & geological history
Formed through the regional or contact metamorphism of sedimentary carbonate rocks (limestone or dolostone) under high temperature and pressure, typically during mountain building in the Phanerozoic eon.
Uses & applications
Extensively used for kitchen countertops, flooring, sculpture, architectural decoration, and as an acid neutralizer in chemical industries.
Geological facts
Famous sculptures like Michelangelo\'s David are made from Carrara marble. The word marble derives from the Greek \'marmaros\', meaning shining stone.
Field identification & locations
Identify by its softness (can be scratched by a steel blade) and its effervescent reaction to dilute hydrochloric acid. Found in mountainous regions globally, specifically Italy, Greece, and Vermont, USA.
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