igneous
Pink Granite
Phaneritic intrusive igneous rock (Felsic)
Hardness: 6-7 (Mohs), Color: Pink, reddish-pink with gray and black specks, Luster: Dull to vitreous, Crystal Structure: Phaneritic (coarse-grained), Composition: Orthoclase feldspar, quartz, and minor amounts of mica or amphibole.
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Physical properties
Hardness: 6-7 (Mohs), Color: Pink, reddish-pink with gray and black specks, Luster: Dull to vitreous, Crystal Structure: Phaneritic (coarse-grained), Composition: Orthoclase feldspar, quartz, and minor amounts of mica or amphibole.
Formation & geological history
Formed by the slow crystallization of magma below Earth's surface. The pink color is due to a high concentration of potassium-rich orthoclase feldspar. These rocks are often part of ancient continental crust and can be millions to billions of years old.
Uses & applications
Used extensively in construction for countertops, floor tiles, paving stones, curbing, and monuments. Highly valued for its durability and aesthetic appeal.
Geological facts
Pink granite is the state rock of New Hampshire. The famous Yosemite National Park peaks are largely composed of various granites. It is one of the hardest natural stones used by humans.
Field identification & locations
Identify by its coarse-grained interlocking crystals and lack of foliation. Look for the distinct salmon-pink or fleshy-red color of the feldspar minerals throughout the stone. Commonly found in mountainous regions or glacial deposits.
