igneous
Granite
Phaneritic intrusive igneous rock
Hardness: 6-7 on Mohs scale; Color: Mottled grey, pink, and white; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained); Specific gravity: 2.63 to 2.75
- Hardness
- 6-7 on Mohs scale
- Color
- Mottled grey, pink, and white
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Mottled grey, pink, and white; 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 silica-rich magma beneath the Earth's surface over millions of years, typically in continental crust environments.
Uses & applications
Extensively used in construction for countertops, floor tiles, paving stones, curbing, monuments, and as crushed stone for road base.
Geological facts
Granite is one of the most common rocks in the Earth's crust and makes up the bulk of the continental plates. It is exceptionally durable and resistant to weathering.
Field identification & locations
Identifiable by its visible interlocking crystals of quartz, feldspar, and mica. Found globally in mountainous regions or shield areas where erosion has exposed deep-seated plutons.
