igneous
Pink Granite
Phaneritic Igneous Rock (high K-feldspar content)
Hardness: 6-7 (Mohs scale); Color: Pinkish-red with white, grey, and green (epidote) specks; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained); Specific Gravity: 2.6-2.7
- Hardness
- 6-7 (Mohs scale)
- Color
- Pinkish-red with white, grey, and green (epidote) specks
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6-7 (Mohs scale); Color: Pinkish-red with white, grey, and green (epidote) specks; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained); Specific Gravity: 2.6-2.7
Formation & geological history
Formed from the slow crystallization of magma below the Earth's surface (intrusive). The pink color is due to an abundance of potassium feldspar. The green spots may be epidote, formed through hydrothermal alteration.
Uses & applications
Used extensively in construction for countertops, floor tiles, paving stones, and monuments due to its durability and aesthetic appeal.
Geological facts
Granite is one of the hardest substances in the world, second only to diamonds. It makes up a large portion of the continental crust.
Field identification & locations
Identified by its speckled 'salt and pepper' appearance and visible interlocking crystals. Common in mountain ranges and continental shields. Look for hardness and lack of layering.
