igneous
Granite
Felsic intrusive igneous rock
Hardness: 6-7 on Mohs scale; Color: Pink, gray, white, or black speckled; Luster: Vitreous to dull; Crystal structure: Phanomeritic (coarse-grained); Specific gravity: 2.65-2.75
- Hardness
- 6-7 on Mohs scale
- Color
- Pink, gray, white, or black speckled
- Luster
- Vitreous to dull
Identified More igneous →
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Pink, gray, white, or black speckled; Luster: Vitreous to dull; Crystal structure: Phanomeritic (coarse-grained); Specific gravity: 2.65-2.75
Formation & geological history
Formed from the slow cooling and crystallization of magma rich in silica and alkali feldspar beneath the Earth's surface over millions of years
Uses & applications
Commonly used in construction, architectural facades, countertops, monuments, and curbing
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 distinct interlocking visible crystals of quartz, feldspar, and mica; found globally in mountainous regions and shield areas
