igneous
Granite
Phaneritic Felsic Igneous Rock
Hardness: 6-7 Mohs; Color: White/Light Gray with black and gray speckles; Luster: Dull to vitreous; Crystal Structure: Phaneritic (visible crystals); Specific Gravity: 2.63-2.75
- Hardness
- 6-7 Mohs
- Color
- White/Light Gray with black and gray speckles
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6-7 Mohs; Color: White/Light Gray with black and gray speckles; Luster: Dull to vitreous; Crystal Structure: Phaneritic (visible crystals); Specific Gravity: 2.63-2.75
Formation & geological history
Formed from the slow cooling and solidification of magma below the Earth's surface (intrusive). Composed mainly of quartz, feldspar, and mica.
Uses & applications
Extensively used in construction for countertops, floor tiles, paving stones, and monuments due to its durability and aesthetic appeal.
Geological facts
Granite makes up much of the Earth's continental crust. El Capitan in Yosemite National Park is one of the world's most famous granite monoliths.
Field identification & locations
Identify by its 'salt and pepper' appearance and visible interlocking crystals. Common in mountain ranges and distributed worldwide as landscaping rock.
