igneous
Granite
Intrusive Igneous Rock
Hardness of 6-7 on the Mohs scale, colors range from pink to gray and black depending on mineral content, dull to vitreous luster, phaneritic (coarse-grained) crystal structure, specific gravity around 2.65-2.75.
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Physical properties
Hardness of 6-7 on the Mohs scale, colors range from pink to gray and black depending on mineral content, dull to vitreous luster, phaneritic (coarse-grained) crystal structure, specific gravity around 2.65-2.75.
Formation & geological history
Formed from the slow cooling of magma rich in silica and alkali aluminum silicates deep underground, typically over millions of years.
Uses & applications
Widely used in construction, monuments, countertops, flooring, and decorative aggregate.
Geological facts
Granite is the most common rock of Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Easily identified by its distinct interlocking mineral grains (quartz, feldspar, and mica). Found worldwide in continental shields and mountain roots.
