igneous
Granite
Felsic intrusive igneous rock
Hardness: 6-7 on Mohs scale. Color: speckled pink, white, grey, and black. Luster: dull to vitreous. Crystal structure: phaneritic (coarse-grained). Cleavage: varies by constituent minerals. Specific gravity: 2.65-2.75.
- Hardness
- 6-7 on Mohs scale
- Color
- speckled pink, white, grey, and black
- Luster
- dull to vitreous
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Physical properties
Hardness: 6-7 on Mohs scale. Color: speckled pink, white, grey, and black. Luster: dull to vitreous. Crystal structure: phaneritic (coarse-grained). Cleavage: varies by constituent minerals. Specific gravity: 2.65-2.75.
Formation & geological history
Formed from the slow cooling and solidification of magma rich in silica and alkali metal oxides deep underground over millions of years.
Uses & applications
Used widely in construction, architectural buildings, monuments, floor tiles, 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 distinct interlocking mineral grains (quartz, feldspar, and micas). Found globally in continental shields and mountain ranges.
