igneous
Granite
Phaneritic felsic intrusive igneous rock
Hardness of 6-7 on the Mohs scale, composed mainly of quartz, alkali feldspar, and plagioclase, with a phaneritic (coarse-grained) crystal structure and vitreous to dull luster.
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Physical properties
Hardness of 6-7 on the Mohs scale, composed mainly of quartz, alkali feldspar, and plagioclase, with a phaneritic (coarse-grained) crystal structure and vitreous to dull luster.
Formation & geological history
Formed from the slow crystallization of magma below Earth's surface over millions of years.
Uses & applications
Commonly used in construction, countertops, monuments, and architectural facings.
Geological facts
Granite is the most common plutonic rock of Earth's crust and forms the core of many major mountain ranges.
Field identification & locations
Identified by visible interlocking mineral crystals of quartz, feldspar, and mica. Found worldwide in continental shields and orogenic belts.
