igneous
Granite
Intrusive Igneous Rock
Hardness: 6-7 on Mohs scale. Color: Varies from pink, gray, white, to black depending on mineral content. Luster: Dull to vitreous. Crystal structure: Phaneritic (coarse-grained, visible interlocking crystals of quartz, feldspar, and mica). Specific gravity: 2.65-2.75.
- Hardness
- 6-7 on Mohs scale
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6-7 on Mohs scale. Color: Varies from pink, gray, white, to black depending on mineral content. Luster: Dull to vitreous. Crystal structure: Phaneritic (coarse-grained, visible interlocking crystals of quartz, feldspar, and mica). Specific gravity: 2.65-2.75.
Formation & geological history
Formed from the slow crystallization of magma far beneath the Earth's surface over millions of years. Common in continental crusts.
Uses & applications
Widely used in construction, monument building, countertops, tiles, and landscaping.
Geological facts
Granite is the most common rock of the Earth's continental crust and is exceptionally durable and weather-resistant.
Field identification & locations
Easily identified by its speckled, coarse-grained appearance containing visible crystals of quartz and feldspar. Found worldwide in mountain ranges and shield areas.
