igneous
Pink granite
Granite, typically quartz + alkali feldspar + plagioclase + biotite/hornblende
AI-generated identification · may be incorrectCoarse-grained, speckled pink, gray, black, and white; crystalline texture with vitreous quartz and feldspar luster. Hardness is about 6–7 Mohs; massive, with no preferred cleavage as a whole, though feldspars cleave internally; specific gravity about 2.63–2.75.
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, speckled pink, gray, black, and white; crystalline texture with vitreous quartz and feldspar luster. Hardness is about 6–7 Mohs; massive, with no preferred cleavage as a whole, though feldspars cleave internally; specific gravity about 2.63–2.75.
Formation & geological history
An intrusive felsic igneous rock formed by slow cooling and crystallization of silica-rich magma deep in the crust, commonly during Precambrian to Phanerozoic mountain-building events.
Uses & applications
Widely used as dimension stone, countertops, monuments, flooring, aggregate, and building blocks; attractive hand specimens are inexpensive collectibles.
Geological facts
The pink color usually comes from potassium feldspar, while dark grains are commonly biotite or hornblende. Granite is the coarse-grained intrusive equivalent of rhyolite.
Field identification & locations
Identify it by visible interlocking crystals, abundant pink feldspar, gray translucent quartz, and black mica or amphibole; it commonly occurs in continental shields, batholiths, and mountain ranges worldwide. A precise variety requires thin-section or mineral testing.
