igneous
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
Mohs hardness: 6-7; Color: Pink, reddish-orange, with white, grey, and black specks; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained); Composition: Orthoclase feldspar, quartz, and minor amounts of mica and hornblende.
- Hardness
- 6-7
- Color
- Pink, reddish-orange, with white, grey, and black specks
- Luster
- Dull to vitreous
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Physical properties
Mohs hardness: 6-7; Color: Pink, reddish-orange, with white, grey, and black specks; Luster: Dull to vitreous; Structure: Phaneritic (coarse-grained); Composition: Orthoclase feldspar, quartz, and minor amounts of mica and hornblende.
Formation & geological history
Formed through the slow crystallization of magma below the Earth's surface (intrusive). The pink color is specifically due to an abundance of potassium feldspar (orthoclase).
Uses & applications
Extensively used in construction, countertops, monuments, floor tiles, and as a decorative stone in landscaping.
Geological facts
Granite makes up a large part of the continental crust. The pink variety is often sourced from regions like the Aswan quarries in Egypt or the Llano Uplift in Texas.
Field identification & locations
Identify in the field by its coarse-grained 'salt and pepper' appearance and distinct pinkish hue. It is found in massive plutons and mountain ranges world-wide.
