igneous
Pink Granite
Granite (Felsic Plutonic Rock)
Hardness: 6-7 on Mohs scale; Color: Pink, salmon, or peach with black and white flecks; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained); Cleavage: Perfect in feldspar grains; Specific gravity: 2.63-2.75
- Hardness
- 6-7 on Mohs scale
- Color
- Pink, salmon, or peach with black and white flecks
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Pink, salmon, or peach with black and white flecks; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained); Cleavage: Perfect in feldspar grains; Specific gravity: 2.63-2.75
Formation & geological history
Formed through the slow crystallization of magma below the Earth's surface (intrusive). The pink color comes from an abundance of potassium feldspar (orthoclase).
Uses & applications
Extensively used in construction for countertops, floor tiles, paving stones, curbing, and monuments. Also popular as a decorative landscaping stone.
Geological facts
The pink color is specifically due to the presence of potassium feldspar. Granite makes up a large portion of the Earth's continental crust and is one of the hardest natural stones used in building.
Field identification & locations
Identify by its interlocking crystalline texture and the presence of pink orthoclase, glassy quartz, and dark biotite or hornblende. Commonly found in mountainous regions or where ancient shield rocks are exposed.
