igneous
Granite
Felsic intrusive igneous rock (Quartz, Feldspar, Mica)
Hardness: 6-7 on Mohs scale; Color: Mottled gray with pink and white inclusions; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained) crystalline.
- Hardness
- 6-7 on Mohs scale
- Color
- Mottled gray with pink and white inclusions
- Luster
- Dull to vitreous
Identified More igneous →
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Mottled gray with pink and white inclusions; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained) crystalline.
Formation & geological history
Formed by the slow crystallization of magma below the Earth's surface. This intrusive cooling allows for the growth of visible mineral crystals. Found in continental crust around the world.
Uses & applications
Extensively used in construction, countertops, flooring, monuments, and as crushed stone for road base and paving.
Geological facts
Granite is one of the hardest substances in the world, second only to diamonds. It makes up a large portion of the Earth's continental crust.
Field identification & locations
Identify by the 'salt and pepper' appearance of multicolored interlocking crystals. Commonly found in mountainous regions or as river-worn pebbles. Best identified by its visible grains of quartz and feldspar.
