igneous
Granite
Phaneritic Plutonic Igneous Rock
Hardness: 6-7 on Mohs scale; Color: Pink, white, gray, and black speckles; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained); Specific gravity: 2.63 to 2.75
- Hardness
- 6-7 on Mohs scale
- Color
- Pink, white, gray, and black speckles
- Luster
- Vitreous to dull
Identified More igneous →
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Pink, white, gray, and black speckles; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained); Specific gravity: 2.63 to 2.75
Formation & geological history
Formed from the slow crystallization of magma below Earth's surface. It is a major component of the continental crust and can be billions of years old.
Uses & applications
Extensively used in construction for countertops, floor tiles, paving stone, curbing, and monuments due to its durability.
Geological facts
Granite is the most common igneous rock found at Earth's surface. It is primarily composed of quartz and feldspar with minor amounts of mica and amphiboles.
Field identification & locations
Identify in the field by its coarse, interlocking crystal texture and 'salt and pepper' appearance. Found worldwide in mountain ranges and Shields.
