igneous
Granite fragment
Granite
Hardness: 6-7 on Mohs scale; Color: Mottled grey, tan, beige with dark spots; Luster: Dull to vitreous; Texture: Coarse-grained phaneritic; Specific gravity: ~2.65-2.75.
- Hardness
- 6-7 on Mohs scale
- Color
- Mottled grey, tan, beige with dark spots
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Mottled grey, tan, beige with dark spots; Luster: Dull to vitreous; Texture: Coarse-grained phaneritic; Specific gravity: ~2.65-2.75.
Formation & geological history
Formed through the slow crystallization of felsic magma beneath the Earth's surface (plutonic environment). Common in continental crust and mountain ranges worldwide.
Uses & applications
Widely used as building stone, dimension stone, architectural tiles, countertops, gravel aggregate, and decorative landscaping.
Geological facts
Granite is one of the most abundant rock types in Earth's continental crust and makes up the core of many major mountain belts.
Field identification & locations
Identified in the field by its coarse-grained texture featuring intergrown quartz, feldspar, and dark accessory minerals like biotite or hornblende.
