igneous
Granite
Intrusive Igneous Rock
Hardness of 6-7 on the Mohs scale, colors vary from pink, white, gray, and black depending on mineral content, vitreous to dull luster, phaneritic (coarse-grained) crystal structure, no cleavage for quartz but good cleavage for feldspar, specific gravity around 2.65-2.75.
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Physical properties
Hardness of 6-7 on the Mohs scale, colors vary from pink, white, gray, and black depending on mineral content, vitreous to dull luster, phaneritic (coarse-grained) crystal structure, no cleavage for quartz but good cleavage for feldspar, specific gravity around 2.65-2.75.
Formation & geological history
Formed from the slow cooling and solidification of magma rich in silica and alkali metal oxides beneath the Earth's surface, typically over millions of years.
Uses & applications
Widely used in construction for countertops, flooring, monuments, curbing, and facing stone.
Geological facts
Granite is the most common igneous rock in the Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Identified by its interlocking visible mineral grains of quartz, feldspar, and micas. Found globally in major mountain ranges and continental shields.
