igneous
Granite
Intrusive Igneous Rock
Hardness: 6-7 on Mohs scale. Color: Varies widely (pink, white, gray, reddish) depending on mineral content. Luster: Dull to glassy. Crystal structure: Phaneric (coarse-grained) with visible interlocking crystals of quartz, feldspar, and mica. Specific Gravity: 2.65 - 2.75.
- Hardness
- 6-7 on Mohs scale
- Luster
- Dull to glassy
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Physical properties
Hardness: 6-7 on Mohs scale. Color: Varies widely (pink, white, gray, reddish) depending on mineral content. Luster: Dull to glassy. Crystal structure: Phaneric (coarse-grained) with visible interlocking crystals of quartz, feldspar, and mica. Specific Gravity: 2.65 - 2.75.
Formation & geological history
Formed from the slow cooling and solidification of magma rich in silica and alkali aluminum silicates beneath the Earth's surface over millions of years.
Uses & applications
Commonly used in construction, architectural buildings, monuments, paving stones, and countertops.
Geological facts
Granite is the most common rock of the Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Easily identified by its speckled, coarse-grained appearance containing quartz and feldspar. Found worldwide in continental shields and mountain belts.
