igneous
Granite Boulder
Intrusive Igneous Rock
Hardness of 6 on the Mohs scale. Composed mainly of quartz, alkali feldspar, and plagioclase. Colors vary from pink to gray depending on the feldspar content. It has a phaneritic (coarse-grained) texture and vitreous to dull luster.
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Physical properties
Hardness of 6 on the Mohs scale. Composed mainly of quartz, alkali feldspar, and plagioclase. Colors vary from pink to gray depending on the feldspar content. It has a phaneritic (coarse-grained) texture and vitreous to dull luster.
Formation & geological history
Formed from the slow cooling of magma beneath the Earth's surface over millions of years, typically associated with continental crust and mountain-building processes.
Uses & applications
Commonly used in construction, monument building, countertops, paving, and landscaping.
Geological facts
Granite is the most common rock of the Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Identified by its interlocking visible crystals of quartz, feldspar, and dark minerals like biotite. Found globally in shield areas and mountainous regions.
