igneous
Granite
Felsic intrusive igneous rock
Hardness: 6-7 on Mohs scale. Color: Varies widely (pink, white, gray) depending on mineral content. Luster: Vitreous to dull. Crystal structure: Phaneritic (coarse-grained, visible interlocking crystals). Cleavage: None distinct as a rock, but constituent minerals like feldspar and mica have distinct cleavage.…
- Hardness
- 6-7 on Mohs scale
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 on Mohs scale. Color: Varies widely (pink, white, gray) depending on mineral content. Luster: Vitreous to dull. Crystal structure: Phaneritic (coarse-grained, visible interlocking crystals). Cleavage: None distinct as a rock, but constituent minerals like feldspar and mica have distinct cleavage. Specific Gravity: 2.65 - 2.75.
Formation & geological history
Formed from the slow cooling of silica-rich magma beneath the Earth's surface over millions of years, allowing large mineral crystals to grow.
Uses & applications
Widely used in construction, architectural buildings, countertops, monuments, and paving stones.
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 appearance composed of quartz, feldspar, and mica. Found globally in continental shields and mountain ranges.
