igneous
Pink Granite
Phaneritic Igneous Rock (high K-feldspar content)
Hardness: 6-7 Mohs; Color: Pink, reddish-pink, with gray/white mottled spots; Luster: Dull to vitreous; Crystal Structure: Phaneritic (visible interlocking crystals); Cleavage: Perfect in feldspar grains; Specific Gravity: 2.63 - 2.75
- Hardness
- 6-7 Mohs
- Color
- Pink, reddish-pink, with gray/white mottled spots
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6-7 Mohs; Color: Pink, reddish-pink, with gray/white mottled spots; Luster: Dull to vitreous; Crystal Structure: Phaneritic (visible interlocking crystals); Cleavage: Perfect in feldspar grains; Specific Gravity: 2.63 - 2.75
Formation & geological history
Formed from the slow crystallization of magma below the Earth's surface (intrusive). The pink color is caused by an abundance of potassium feldspar (orthoclase). These formations often date from the Precambrian to Cenozoic eras.
Uses & applications
Used extensively in construction (countertops, flooring, monuments), aggregate in road building, and as ornamental landscaping stone.
Geological facts
Famous structures like the base of the Statue of Liberty and various Egyptian pyramids utilize granite. The pink hue is a definitive indicator of high orthoclase feldspar content compared to gray granites.
Field identification & locations
Identify in the field by its 'salt and pepper' texture with dominant pink grains. It is extremely hard and will scratch glass. Found globally in continental crust and mountain ranges.
