metamorphic
Marble
Metamorphosed Limestone (CaCO3)
Hardness: 3 on Mohs scale; Color: White with grey/bluish veins or mottling; Luster: Vitreous to pearly; Crystal structure: Trigonal (granular/saccharoidal texture); Cleavage: Perfect rhombohedral in individual crystals; Specific gravity: 2.7-2.8
- Hardness
- 3 on Mohs scale
- Color
- White with grey/bluish veins or mottling
- 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: White with grey/bluish veins or mottling; Luster: Vitreous to pearly; Crystal structure: Trigonal (granular/saccharoidal texture); Cleavage: Perfect rhombohedral in individual crystals; Specific gravity: 2.7-2.8
Formation & geological history
Formed through the regional or contact metamorphism of sedimentary limestone or dolomite rocks. Subjected to high heat and pressure, causing recrystallization of carbonate minerals into an interlocking mosaic of calcite or dolomite crystals.
Uses & applications
Extensively used in construction, sculpture, flooring, and as a crushed stone for highway construction. Highly valued in high-end interior design for countertops and tiling.
Geological facts
The word marble derives from the Ancient Greek 'marmaros', meaning 'shining stone'. Famous structures like the Taj Mahal and the Parthenon are built almost entirely of various types of marble.
Field identification & locations
Identify in the field by its softness (can be scratched by a steel knife) and its effervescence (fizzing) when in contact with dilute hydrochloric acid. It typically lacks fossils and is found in mountainous regions near plate boundaries.
More like this
