igneous
Granite
Phaneritic plutonic rock (Quartz, Feldspar, Mica)
Hardness: 6-7 (Mohs scale), Color: pinkish-tan/brown with speckled crystals, Luster: dull to vitreous, Crystal structure: phaneritic (large visible crystals), Cleavage: poor/irregular fracture.
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Physical properties
Hardness: 6-7 (Mohs scale), Color: pinkish-tan/brown with speckled crystals, Luster: dull to vitreous, Crystal structure: phaneritic (large visible crystals), Cleavage: poor/irregular fracture.
Formation & geological history
Formation occurs by the slow crystallization of magma below Earth's surface. These rocks are often hundreds of millions of years old and form deep within the continental crust.
Uses & applications
Used extensively in construction (countertops, tiles, paving), decorative monuments, and as crushed stone for road aggregate.
Geological facts
Granite is the primary rock of Earth's continental crust. It is incredibly durable and resistant to erosion, which is why it forms the core of many major mountain ranges.
Field identification & locations
Identify by looking for a 'salt and pepper' or speckled appearance with interlocked crystals of different colors. Commonly found in mountain regions or areas with exposed bedrock.
