igneous
Pink Granite
Granite (Phaneritic Acidic Igneous)
Hardness: 6-7 (Mohs Scale); Color: Pink to salmon-hued with black and white inclusions; Luster: Vitreous to dull; Structure: Phaneritic (large visible crystals), Cleavage: Perfect in feldspar components; SG: 2.6-2.7
- Hardness
- 6-7 (Mohs Scale)
- Color
- Pink to salmon-hued with black and white inclusions
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 (Mohs Scale); Color: Pink to salmon-hued with black and white inclusions; Luster: Vitreous to dull; Structure: Phaneritic (large visible crystals), Cleavage: Perfect in feldspar components; SG: 2.6-2.7
Formation & geological history
Formed by the slow crystallization of magma below Earth's surface. High in potassium feldspar which gives the pink color. Can form in large batholiths over millions of years.
Uses & applications
Used extensively in construction for countertops, floor tiles, and monuments. Also popular as a landscaping stone and for decorative lapidary work.
Geological facts
Pink granite is the state rock of several regions including New Hampshire. The pink color is specifically due to the presence of Orthoclase (potassium-rich) feldspar.
Field identification & locations
Identify in the field by its interlocking crystalline texture (usually quartz, feldspar, and biotite mica) and its overall pinkish hue. Common in mountain ranges and Canadian Shield areas.
