Igneous
Granite
Granite
Hardness: 6-7 on Mohs scale. Color: Variable, often with mottled gray, pink, white, and black spots (due to feldspar, quartz, and mica). Luster: Dull to somewhat shiny depending on weathering. Structure: Phaneritic (coarse-grained).
- Hardness
- 6-7 on Mohs scale
- Luster
- Dull to somewhat shiny depending on weathering
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Physical properties
Hardness: 6-7 on Mohs scale. Color: Variable, often with mottled gray, pink, white, and black spots (due to feldspar, quartz, and mica). Luster: Dull to somewhat shiny depending on weathering. Structure: Phaneritic (coarse-grained).
Formation & geological history
Formed from the slow crystallization of magma below Earth's surface. Found worldwide, making up a significant portion of the continental crust.
Uses & applications
Widely used as a construction material, for countertops, floor tiles, paving stones, curbing, monuments, and building veneers.
Geological facts
Granite is known for its durability and has been used in construction since ancient times. The spots on this specific rock show varying mineral concentrations or weathering patterns.
Field identification & locations
Identify by its coarse-grained texture and typical mineral assemblage of quartz, feldspar, and dark minerals like biotite or hornblende. It is very hard and resistant to scratching.
