igneous
Granite
Phaneritic Igneous Rock (composed of Quartz, Feldspar, and Mica)
Hardness: 6-7 Mohs; Color: Greyish-white with dark specks; Luster: Dull to vitreous; Structure: Phaneritic (visible crystals); Specific Gravity: 2.63-2.75
- Hardness
- 6-7 Mohs
- Color
- Greyish-white with dark specks
- Luster
- Dull to vitreous
Identified More igneous →
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Physical properties
Hardness: 6-7 Mohs; Color: Greyish-white with dark specks; Luster: Dull to vitreous; Structure: Phaneritic (visible crystals); Specific Gravity: 2.63-2.75
Formation & geological history
Formed through the slow crystallization of magma below the Earth's surface (intrusive). They form in continental crust and occur across all geological ages, notably in mountain belts.
Uses & applications
Extensively used in construction, paving, countertops, monuments, and as crushed stone for road base.
Geological facts
Granite is the most common igneous rock found on Earth's continents and makes up the bulk of the continental crust. The word comes from the Latin 'granum', meaning a grain, in reference to its coarse-grained structure.
Field identification & locations
Identify by its interlocking crystalline texture and the presence of clear quartz and opaque feldspar. Found globally in mountainous regions and exposed batholiths.
