igneous
Granite
Intrusive Igneous Rock
Hardness of 6 on the Mohs scale, composed mainly of quartz, alkali feldspar, and plagioclase. Color varies from pink to gray depending on its chemistry and mineralogy. Luster is typically dull to vitreous in individual crystals. Crystal structure is phaneritic (coarse-grained).
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Physical properties
Hardness of 6 on the Mohs scale, composed mainly of quartz, alkali feldspar, and plagioclase. Color varies from pink to gray depending on its chemistry and mineralogy. Luster is typically dull to vitreous in individual crystals. Crystal structure is phaneritic (coarse-grained).
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 for countertops, floor tiles, paving, and monuments due to its high durability and resistance to weathering.
Geological facts
Granite is the most common rock of the Earth's continental crust and is often used as a benchmark for durability.
Field identification & locations
Easily identified by its visibly crystalline, speckled texture containing interlocking mineral grains. Found abundantly in continental shields and mountain ranges worldwide.
