igneous
Granite with Pyrite or Mica
Phaneritic intrusive igneous rock
Hardness of 6-7 on the Mohs scale, coarse-grained texture (phaneritic), composed of quartz, potassium feldspar, plagioclase, and dark minerals such as biotite mica or amphibole, displaying a vitreous to dull luster.
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Physical properties
Hardness of 6-7 on the Mohs scale, coarse-grained texture (phaneritic), composed of quartz, potassium feldspar, plagioclase, and dark minerals such as biotite mica or amphibole, displaying a vitreous to dull luster.
Formation & geological history
Formed from the slow crystallization of magma beneath the Earth's surface over millions of years, commonly associated with continental crust and mountain-building processes.
Uses & applications
Widely used as a dimensional stone in construction, countertops, monuments, and landscaping, as well as crushed stone for road bases.
Geological facts
Granite is the most common igneous rock in the Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Easily identified by its distinct interlocked mineral crystals of varying colors (pink, white, gray, and black), and is globally distributed in shield areas and mountain roots.
