igneous
Pink granite
Granite, typically quartz–alkali feldspar–plagioclase with biotite/hornblende
AI-generated identification · may be incorrectCoarse-grained, mottled pink, gray, black, and white; vitreous quartz and feldspar luster, interlocking crystals, no dominant cleavage. Hardness is about 6–7 Mohs; specific gravity is approximately 2.6–2.7.
Identified More igneous →
Explore Pink granite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Coarse-grained, mottled pink, gray, black, and white; vitreous quartz and feldspar luster, interlocking crystals, no dominant cleavage. Hardness is about 6–7 Mohs; specific gravity is approximately 2.6–2.7.
Formation & geological history
An intrusive felsic igneous rock formed when silica-rich magma cooled slowly deep underground, allowing large crystals to grow. Individual specimens may range from Precambrian to younger Phanerozoic ages.
Uses & applications
Widely used for countertops, monuments, building stone, paving, aggregate, and decorative objects; attractive pieces are collected but are usually low value.
Geological facts
The pink color commonly comes from potassium feldspar, while black minerals are biotite or amphibole and translucent grains are quartz.
Field identification & locations
Identify it by visible interlocking crystals: pink feldspar, gray or glassy quartz, and black mica/amphibole; it is common in continental mountain belts and exposed plutons worldwide. A rounded shape suggests weathering or transport.
