igneous
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
Hardness: 6-7 Mohs; Color: Pink, reddish-orange, with black and white flecks; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained); Cleavage: Indistinct; Specific Gravity: 2.63 - 2.75
- Hardness
- 6-7 Mohs
- Color
- Pink, reddish-orange, with black and white flecks
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6-7 Mohs; Color: Pink, reddish-orange, with black and white flecks; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained); Cleavage: Indistinct; Specific Gravity: 2.63 - 2.75
Formation & geological history
Formed through the slow crystallization of magma below Earth's surface. The pink color comes from a high concentration of potassium feldspar (orthoclase). These are often billions of years old, typically found in continental crustal shields.
Uses & applications
Extensively used in construction for countertops, floor tiles, paving stones, and monuments due to its durability and aesthetic appeal. Also used as aggregate in infrastructure.
Geological facts
Granite makes up a large part of the Earth's continental crust. Famous landmarks like Mount Rushmore and the base of the Statue of Liberty are made of granite. The pink variation is particularly prized for architectural aesthetics.
Field identification & locations
Identify in the field by its 'salt and pepper' look combined with pink hues and visible interlocked crystals. It is found in mountain ranges and glacial deposits. It will not react with acid, unlike limestone.
