igneous
Pink granite
Granite, chiefly quartz–K-feldspar–plagioclase with biotite/hornblende
AI-generated identification · may be incorrectCoarse-grained, pink, gray, and black interlocking crystals; generally Mohs 6–7, vitreous quartz, feldspar cleavage, and no foliation. Specific gravity is typically 2.63–2.75.
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Physical properties
Coarse-grained, pink, gray, and black interlocking crystals; generally Mohs 6–7, vitreous quartz, feldspar cleavage, and no foliation. Specific gravity is typically 2.63–2.75.
Formation & geological history
An intrusive felsic igneous rock formed by slow cooling of silica-rich magma deep in the crust, commonly during Precambrian to Phanerozoic continental pluton emplacement.
Uses & applications
Used as dimension stone, countertops, monuments, aggregate, and architectural facing; attractive hand specimens are inexpensive collectibles.
Geological facts
The pink color usually comes from potassium feldspar, while quartz appears glassy gray and dark minerals are biotite or hornblende.
Field identification & locations
Identify it by visible interlocking grains, abundant pink feldspar, gray translucent quartz, and scattered black mica/amphibole; common in continental mountain belts and exposed plutons worldwide. The image is consistent with granite, though exact identification would require a fresh surface or mineral tests.
