igneous
Granite
Felsic intrusive igneous rock
Hardness: 6-7 on Mohs scale. Color: Varies widely (pink, white, gray, black speckled). Luster: Dull to vitreous. Crystal structure: Phaneritic (coarse-grained, visible crystals). Specific gravity: 2.65-2.75.
- Hardness
- 6-7 on Mohs scale
- Color
- Varies widely (pink, white, gray, black speckled)
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6-7 on Mohs scale. Color: Varies widely (pink, white, gray, black speckled). Luster: Dull to vitreous. Crystal structure: Phaneritic (coarse-grained, visible crystals). Specific gravity: 2.65-2.75.
Formation & geological history
Formed from the slow crystallization of magma below Earth's surface over millions of years, typically associated with continental crust.
Uses & applications
Widely used in construction, architectural buildings, monuments, countertops, and decorative aggregate.
Geological facts
Granite is the most common rock of Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Easily identified by its speckled pink, white, and black interlocked mineral grains (quartz, feldspar, and biotite mica). Found globally in mountainous regions and shield areas.
