igneous
Pink Granite
Granite (rich in Potassium Feldspar/Orthoclase)
Hardness: 6-7 on Mohs scale; Color: Pinkish-red with grey and black specks; Luster: Vitreous to dull; Structure: Phaneritic (coarse-grained) crystalline; Cleavage: Visible in feldspar grains; Specific Gravity: 2.63-2.75
- Hardness
- 6-7 on Mohs scale
- Color
- Pinkish-red with grey and black specks
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Pinkish-red with grey and black specks; Luster: Vitreous to dull; Structure: Phaneritic (coarse-grained) crystalline; Cleavage: Visible in feldspar grains; Specific Gravity: 2.63-2.75
Formation & geological history
Formed from the slow subterranean cooling of silica-rich magma (intrusive). The pink color is due to a high concentration of potassium feldspar. Geological ages range from Precambrian to Cenozoic.
Uses & applications
Commonly used in construction for countertops, floor tiles, paving stones, curbing, and monuments. Also popular as crushed stone and for decorative landscaping.
Geological facts
Pink granite is the state rock of New Hampshire. It is exceptionally durable and resistant to acid rain, which is why it is favored for outdoor statues and architecture. The world's largest granite batholiths are found in the Sierra Nevada mountains.
Field identification & locations
Identify in the field by its coarse interlocking crystals and characteristic pink/salmon color mixed with translucent quartz and dark biotite or hornblende. It is found in continental crust across the globe.
