igneous
Granite
Felsic intrusive igneous rock
Hardness: 6-7 on Mohs scale. Color: Pink, white, gray, or black speckled. Luster: Vitreous to dull. Crystal structure: Phaneric, coarse-grained texture. Specific gravity: 2.65-2.75.
- Hardness
- 6-7 on Mohs scale
- Color
- Pink, white, gray, or black speckled
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 on Mohs scale. Color: Pink, white, gray, or black speckled. Luster: Vitreous to dull. Crystal structure: Phaneric, coarse-grained texture. Specific gravity: 2.65-2.75.
Formation & geological history
Formed from the slow crystallization of magma below Earth's surface over millions of years. Common in continental crust.
Uses & applications
Used extensively in construction, countertops, monuments, flooring, and architectural facing.
Geological facts
Granite is the most common rock of Earth's continental crust and forms the core of many major mountain ranges.
Field identification & locations
Easily identified by its distinct interlocking mineral crystals of quartz, feldspar, and mica. Found globally in shield areas and mountain roots.
