igneous
Granite
Phaneritic Felsic Igneous Rock
Hardness of 6 on the Mohs scale, typically composed of quartz, alkali feldspar, and plagioclase. Color varies from pink to gray depending on the feldspar content. Luster is vitreous to dull. Granular, phaneritic crystal structure.
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Physical properties
Hardness of 6 on the Mohs scale, typically composed of quartz, alkali feldspar, and plagioclase. Color varies from pink to gray depending on the feldspar content. Luster is vitreous to dull. Granular, phaneritic crystal structure.
Formation & geological history
Formed from the slow cooling of magma rich in silica and alkali metal oxides beneath the Earth's surface over millions of years.
Uses & applications
Widely used in construction, monuments, countertops, flooring, and exterior paving.
Geological facts
Granite is the most common plutonic rock of Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Easily identified by its distinct interlocking visible grains of pink or white feldspar, glassy clear quartz, and dark biotite mica. Found globally in shield areas and mountain ranges.
