igneous
Granite
Intrusive Igneous Rock
Hardness of 6 on the Mohs scale, colors ranging from pink to gray, dull to subvitreous luster, phaneritic crystal structure, specific gravity around 2.65 to 2.75.
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Physical properties
Hardness of 6 on the Mohs scale, colors ranging from pink to gray, dull to subvitreous luster, phaneritic crystal structure, specific gravity around 2.65 to 2.75.
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
Commonly used in construction, monument building, countertops, and architectural facing stone.
Geological facts
Granite is the most common rock of the Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Easily identified by its visible interlocking mineral grains of quartz, feldspar, and mica. Found abundantly in continental shields worldwide.
