igneous
Granite
Felsic intrusive igneous rock
Hardness: 6-7 on Mohs scale. Color: Light gray, pink, or white with dark flecks. Luster: Dull to glassy. Crystal structure: Phaneritic (coarse-grained visible crystals). Cleavage: None distinct. Specific gravity: 2.65-2.75.
- Hardness
- 6-7 on Mohs scale
- Color
- Light gray, pink, or white with dark flecks
- Luster
- Dull to glassy
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Physical properties
Hardness: 6-7 on Mohs scale. Color: Light gray, pink, or white with dark flecks. Luster: Dull to glassy. Crystal structure: Phaneritic (coarse-grained visible crystals). Cleavage: None distinct. Specific gravity: 2.65-2.75.
Formation & geological history
Formed from the slow cooling and crystallization of magma rich in silica and alkali feldspar deep beneath the Earth's surface over millions of years.
Uses & applications
Widely used in construction for countertops, flooring, monuments, and curbing due to its durability and aesthetic appeal.
Geological facts
Granite makes up a major part of the continental crust and is one of the most durable natural building stones available.
Field identification & locations
Easily identified by its speckled appearance containing quartz, feldspar, and mica minerals. Found worldwide in major mountain ranges and continental shields.
