igneous
Pink Granite
Granite (Alkali-feldspar granite)
Hardness: 6-7 on Mohs scale. Color: Pink, salmon, or reddish with flecks of gray, white, and black. Luster: Dull to vitreous. Crystal Structure: Phaneritic (coarse-grained coarse crystals of feldspar and quartz). Specific Gravity: 2.63 to 2.75.
- Hardness
- 6-7 on Mohs scale
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6-7 on Mohs scale. Color: Pink, salmon, or reddish with flecks of gray, white, and black. Luster: Dull to vitreous. Crystal Structure: Phaneritic (coarse-grained coarse crystals of feldspar and quartz). Specific Gravity: 2.63 to 2.75.
Formation & geological history
Formed through the slow crystallization of magma below Earth's surface. High potassium feldspar content gives it the pink hue. This specimen appears water-worn, likely from a river or glacial deposit.
Uses & applications
Widely used in construction, countertops, monuments, and as crushed stone for road aggregate. Highly valued for durability and aesthetics.
Geological facts
Granite makes up a large part of the Earth's continental crust. The pink color is specifically due to an abundance of orthoclase feldspar containing iron impurities.
Field identification & locations
Identify by its interlocking crystalline texture and pink/orange-red feldspar grains. Commonly found in continental shields and mountain ranges worldwide. Collectors look for unique mineral inclusions like biotite or hornblende.
