igneous
Pink Granite
Felsic intrusive igneous rock (Granite)
Hardness: 6-7 (Mohs scale), Color: Pink, reddish, and grey mottling, Luster: Dull (weathered) to vitreous (fresh crystals), Structure: Phaneritic (coarse-grained visible crystals), Specific Gravity: 2.63 to 2.75
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Physical properties
Hardness: 6-7 (Mohs scale), Color: Pink, reddish, and grey mottling, Luster: Dull (weathered) to vitreous (fresh crystals), Structure: Phaneritic (coarse-grained visible crystals), Specific Gravity: 2.63 to 2.75
Formation & geological history
Formed by the slow crystallization of silica-rich magma beneath the Earth's surface. This specimen appears to be a water-worn or weathered pebble likely from the Precambrian or Paleozoic era depending on the source region.
Uses & applications
Used extensively in construction, countertops, monuments, and as crushed stone for road base. Polished pieces are popular in landscaping and decor.
Geological facts
Granite makes up a large portion of the Earth's continental crust. The pink color specifically comes from an abundance of potassium feldspar (orthoclase).
Field identification & locations
Identified by its speckled 'salt and pepper' appearance with pinkish hues and hard, interlocking crystals. Commonly found in mountain ranges and glacial till across North America and Europe.
