igneous
Granite Boulder
Intrusive Igneous Rock
Hardness of 6 on the Mohs scale, coarse-grained texture, composed mainly of quartz, alkali feldspar, and plagioclase. Colors range from pink to gray depending on the feldspar content. Vitreous to dull luster.
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Physical properties
Hardness of 6 on the Mohs scale, coarse-grained texture, composed mainly of quartz, alkali feldspar, and plagioclase. Colors range from pink to gray depending on the feldspar content. Vitreous to dull luster.
Formation & geological history
Formed from the slow cooling and solidification of magma deep beneath the Earth's surface over millions of years.
Uses & applications
Commonly used in construction, monument building, countertops, and as decorative landscape boulders.
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 visible interlocking crystals of quartz, feldspar, and mica. Found worldwide in major mountain ranges and shields.
