igneous
Granite
Felsic intrusive igneous rock
Hardness of 6 on the Mohs scale, composed primarily of quartz, alkali feldspar, and plagioclase, with varying amounts of biotite mica and amphibole. Color ranges from pink to grey depending on feldspar content. Luster is vitreous to dull.
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Physical properties
Hardness of 6 on the Mohs scale, composed primarily of quartz, alkali feldspar, and plagioclase, with varying amounts of biotite mica and amphibole. Color ranges from pink to grey depending on feldspar content. Luster is vitreous to dull.
Formation & geological history
Formed from the slow crystallization of magma below Earth's surface over millions of years.
Uses & applications
Widely used in construction, architectural buildings, monuments, countertops, and decorative flooring.
Geological facts
Granite makes up a major part of Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Identifiable by its distinct speckled pink, white, and black crystalline interlocking mineral grains. Found worldwide in continental shields and mountain roots.
