igneous
Granite Porphyry
Felsic Intrusive Igneous Rock
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale, mottled gray and white color, dull to vitreous luster, phaneritic crystal structure, poor cleavage, specific gravity of 2.65.
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Physical properties
Hardness of 6 on the Mohs scale, mottled gray and white color, dull to vitreous luster, phaneritic crystal structure, poor cleavage, specific gravity of 2.65.
Formation & geological history
Formed by the slow cooling of magma beneath the Earth's surface over millions of years, often dating back to the Precambrian era.
Uses & applications
Commonly used in construction, architectural facades, monuments, and crushed stone for road bases.
Geological facts
Granite is the most abundant rock in the Earth's continental crust and is frequently found in major mountain ranges worldwide.
Field identification & locations
Identify by visible interlocking mineral grains of quartz, feldspar, and mica. Found globally in shields and orogenic belts; popular for amateur geological collection.
