igneous
Pink Granite
Phaneritic Plutonic Rock (Felsic)
Hardness: 6-7 Mohs; Color: Pinkish-red with white and black flecks; Luster: Dull to vitreous; Structure: Coarse-grained phaneritic; Cleavage: None (grains have cleavage but rock breaks irregularly)
- Hardness
- 6-7 Mohs
- Color
- Pinkish-red with white and black flecks
- Luster
- Dull to vitreous
Identified More igneous →
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Physical properties
Hardness: 6-7 Mohs; Color: Pinkish-red with white and black flecks; Luster: Dull to vitreous; Structure: Coarse-grained phaneritic; Cleavage: None (grains have cleavage but rock breaks irregularly)
Formation & geological history
Formed from the slow cooling of silica-rich magma deep underground. The pink color comes from a high concentration of potassium feldspar (orthoclase).
Uses & applications
Commonly used as a decorative building stone, for countertops, monuments, and as crushed stone for road construction.
Geological facts
Granite is the most common rock found on the Earth's continental crust. Its pink hue is specifically caused by the mineral Orthoclase, which is a K-feldspar.
Field identification & locations
Identify by its 'salt and pepper' look but with a pinkish base. Found in continental mountain ranges and glacial till. Collectors value unique grain patterns.
