igneous
Granite
Intrusive Igneous Rock
Hardness: 6-7 on the Mohs scale. Color: Typically white, pink, gray, or speckled with dark minerals. Luster: Vitreous to dull. Crystal structure: Phaneritic (coarse-grained, visible interlocking crystals of quartz, feldspar, and mica). Cleavage: Varies by constituent minerals. Specific gravity: 2.65 - 2.75.
- Hardness
- 6-7 on the Mohs scale
- Color
- Typically white, pink, gray, or speckled with dark minerals
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 on the Mohs scale. Color: Typically white, pink, gray, or speckled with dark minerals. Luster: Vitreous to dull. Crystal structure: Phaneritic (coarse-grained, visible interlocking crystals of quartz, feldspar, and mica). Cleavage: Varies by constituent minerals. Specific gravity: 2.65 - 2.75.
Formation & geological history
Formed from the slow cooling and crystallization of molten magma beneath the Earth's surface over millions of years. It is a major component of the continental crust.
Uses & applications
Widely used in construction for dimensional stone, floor tiles, kitchen countertops, curbing, and monuments.
Geological facts
Granite is one of the most abundant rocks in the Earth's continental crust and is found exclusively on Earth among the terrestrial planets.
Field identification & locations
Easily identified by its distinct speckled appearance and visible interlocking mineral grains (quartz, feldspar, mica). Found globally in mountainous regions and shield areas.
