igneous
Pink Granite
Granite (Alkali-feldspar granite)
Hardness: 6-7 on Mohs scale; Color: Pink, reddish, or salmon due to potassium feldspar; Luster: Dull to vitreous; Crystal Structure: Phaneritic (coarse-grained) with visible crystals of feldspar, quartz, and minor mica; Specific Gravity: 2.63 - 2.75.
- Hardness
- 6-7 on Mohs scale
- Color
- Pink, reddish, or salmon due to potassium feldspar
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Pink, reddish, or salmon due to potassium feldspar; Luster: Dull to vitreous; Crystal Structure: Phaneritic (coarse-grained) with visible crystals of feldspar, quartz, and minor mica; Specific Gravity: 2.63 - 2.75.
Formation & geological history
Formed through the slow crystallization of magma below the Earth's surface (intrusive). This specimen likely dates to several hundred million years ago, cooling deep within the crust before being exposed by erosion.
Uses & applications
Widely used in construction for countertops, floor tiles, and building cladding. Also popular as crushed stone for road bases and as a decorative landscaping rock due to its durability and color.
Geological facts
Granite makes up a large portion of the Earth's continental crust. The pink color specifically comes from high concentrations of orthoclase feldspar. It is one of the hardest and most durable natural stones available.
Field identification & locations
Identify in the field by its interlocking coarse-grained texture and the distinct presence of glassy quartz alongside pink feldspar plates. It is commonly found in mountainous regions or glacial deposits (erratics) throughout North America and Europe.
