igneous
Granite Gravel
Felsic intrusive igneous rock
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale, speckled gray and tan color, dull to sub-vitreous luster, andphanitic to phaneritic crystal structure.
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Physical properties
Hardness of 6 on the Mohs scale, speckled gray and tan color, dull to sub-vitreous luster, andphanitic to phaneritic crystal structure.
Formation & geological history
Formed from the slow cooling of magma rich in silica and potassium deep beneath the Earth's crust over millions of years.
Uses & applications
Widely used in landscaping, road construction, aggregate for concrete, and building foundations.
Geological facts
Granite is the most common rock type in Earth's continental crust and is exceptionally resistant to weathering.
Field identification & locations
Identified by its visible interlocking mineral grains of quartz, feldspar, and mica. Commonly sourced from quarries worldwide.
