igneous
Granite
Felsic intrusive igneous rock
Hardness: 6 on the Mohs scale. Color: Varies widely (pink, gray, white) with dark mineral specks. Luster: Vitreous to dull. Crystal structure: Phaneritic, coarse-grained texture. Specific gravity: 2.65 to 2.75.
- Hardness
- 6 on the Mohs scale
- Color
- Varies widely (pink, gray, white) with dark mineral specks
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6 on the Mohs scale. Color: Varies widely (pink, gray, white) with dark mineral specks. Luster: Vitreous to dull. Crystal structure: Phaneritic, coarse-grained texture. Specific gravity: 2.65 to 2.75.
Formation & geological history
Formed from the slow cooling of magma rich in silica and alkali feldspar deep beneath the Earth's crust.
Uses & applications
Commonly used in construction, architectural buildings, countertops, monuments, and paving stones.
Geological facts
Granite is the most common rock of the Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Easily identified by its visibly speckled, interlocking mineral crystals of quartz, feldspar, and mica. Found worldwide in continental shields and mountain ranges.
