metamorphic
Marble (Carrara style)
Recrystallized Calcite-rich Metamorphic Rock (CaCO3)
Hardness: 3 on Mohs scale; Color: typically white with grey or black veining; Luster: crystalline to waxy when polished; Crystal Structure: Trigonal (rhombohedral); Cleavage: Perfect rhombohedral in calcite grains; Specific Gravity: 2.7
- Hardness
- 3 on Mohs scale
- Color
- typically white with grey or black veining
- Luster
- crystalline to waxy when polished
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: typically white with grey or black veining; Luster: crystalline to waxy when polished; Crystal Structure: Trigonal (rhombohedral); Cleavage: Perfect rhombohedral in calcite grains; Specific Gravity: 2.7
Formation & geological history
Formed through the regional or contact metamorphism of sedimentary carbonate rocks, such as limestone or dolostone, under extreme heat and pressure. This specimen displays characteristic 'veining' caused by mineral impurities like clay or iron oxides.
Uses & applications
Used extensively in high-end construction for countertops and flooring, sculpture, monument building, and as a source of calcium carbonate in industrial fillers and cosmetics.
Geological facts
Famous sculptures like Michelangelo\'s David were carved from Carrara marble. The term 'marble' derives from the Greek 'marmaros,' meaning 'shining stone.'
Field identification & locations
Identify in the field by its softness (can be scratched by a copper penny) and its vigorous effervescence (fizzing) when exposed to dilute hydrochloric acid. Commonly found in mountainous regions with a history of tectonic activity.
More like this
