igneous
Granite
Granite
Hardness (Mohs): 6-7; Color: Pink, red, or gray; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained); Cleavage: Distinct in feldspar grains; Specific gravity: 2.63–2.75
- Color
- Pink, red, or gray
- Luster
- Vitreous to dull
Identified More igneous →
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Physical properties
Hardness (Mohs): 6-7; Color: Pink, red, or gray; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained); Cleavage: Distinct in feldspar grains; Specific gravity: 2.63–2.75
Formation & geological history
Formed from the slow crystallization of magma below Earth's surface (intrusive). Most granites date from the Precambrian or Paleozoic eras.
Uses & applications
Extensively used in construction for countertops, floor tiles, paving stones, curbing, and monuments due to its durability.
Geological facts
Granite is the most common igneous rock found in Earth's crust. It is the signature rock of the continents, making up the majority of the continental tectonic plates.
Field identification & locations
Identify by its interlocking 'salt and pepper' appearance of quartz, feldspar, and mica minerals. Found in large mountain massifs and batholiths worldwide.
