igneous
Granite
Felsic intrusive igneous rock
Hardness: 6 on the Mohs scale. Color: Varies widely (gray, pink, white) depending on mineral content. Luster: Dull to glassy. Crystal structure: Phaneritic (coarse-grained, visible crystals). Cleavage: None distinct as a rock, but individual minerals like feldspar and quartz have their own cleavage.…
- Hardness
- 6 on the Mohs scale
- Luster
- Dull to glassy
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Physical properties
Hardness: 6 on the Mohs scale. Color: Varies widely (gray, pink, white) depending on mineral content. Luster: Dull to glassy. Crystal structure: Phaneritic (coarse-grained, visible crystals). Cleavage: None distinct as a rock, but individual minerals like feldspar and quartz have their own cleavage. Specific gravity: 2.65 to 2.75.
Formation & geological history
Formed from the slow crystallization of magma below Earth's surface over millions of years. Commonly associated with continental crust and mountain-building processes.
Uses & applications
Used extensively in construction, countertops, monuments, flooring, and curbing.
Geological facts
Granite is the most common intrusive rock in the Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Easily identified by its interlocking, visible grains of quartz, feldspar, and mica. Found abundantly in continental shields and mountain ranges worldwide.
