igneous
Biotite Granite
Intrusive igneous rock primarily composed of quartz, alkali feldspar, plagioclase, and biotite mica
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale, varied colors including pink, white, and grey with dark flecks, sub-vitreous luster, and a phaneritic crystal structure.
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Physical properties
Hardness of 6 on the Mohs scale, varied colors including pink, white, and grey with dark flecks, sub-vitreous luster, and a phaneritic crystal structure.
Formation & geological history
Formed through the slow crystallization of magma beneath the Earth's surface over millions of years.
Uses & applications
Widely utilized in construction, monument building, and interior countertops due to its extreme durability.
Geological facts
Granite forms the core of many major mountain ranges and is the most common plutonic rock on Earth's continental crust.
Field identification & locations
Easily identified in the field by its distinct interlocking visible crystals of quartz, feldspar, and dark mica flakes.
