igneous
Pink Granite
Felsic Plutonic Rock (Granite)
AI-generated identification · may be incorrectHardness: 6-7 Mohs; Color: Pink, reddish-brown, white, and black; Luster: Dull to vitreous; Crystal structure: Phaneritic (visible crystals); Specific Gravity: 2.63 to 2.75
- Hardness
- 6-7 Mohs
- Color
- Pink, reddish-brown, white, and black
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6-7 Mohs; Color: Pink, reddish-brown, white, and black; Luster: Dull to vitreous; Crystal structure: Phaneritic (visible crystals); Specific Gravity: 2.63 to 2.75
Formation & geological history
Formed from the slow crystallization of magma below Earth's surface. High potassium feldspar content provides the pink hue. Often found in continental crust and mountain ranges dating back to the Precambrian era.
Uses & applications
Extensively used in construction, paving, countertops, monuments, and as crushed stone for road base. Due to its durability and aesthetics, it is also popular for decorative landscaping.
Geological facts
Pink granite is the state rock of New Hampshire and constitutes a significant portion of the Yosemite National Park landscape. Mount Rushmore is carved into a massive granite batholith.
Field identification & locations
Identify by its interlocking granular texture where individual mineral grains (quartz, feldspar, biotite) are visible to the naked eye. Look for the distinctive salmon-pink color mixed with translucent quartz. Commonly found in glaciated regions as erratic boulders or in mountain outcrops.
