igneous
K-Feldspar Granite Fragment
Felsic Plutonic Rock (Granite)
Hardness of 6-7 on the Mohs scale, predominantly pink to reddish color due to potassium feldspar, with translucent quartz and dark biotite mica. Luster varies from vitreous to dull. Granular texture with interlocking crystals.
Identified More igneous →
Explore K-Feldspar Granite Fragment in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 6-7 on the Mohs scale, predominantly pink to reddish color due to potassium feldspar, with translucent quartz and dark biotite mica. Luster varies from vitreous to dull. Granular texture with interlocking crystals.
Formation & geological history
Formed through the slow, subterranean cooling of magma rich in silica and potassium, typically during major continental orogenic (mountain-building) events over millions of years.
Uses & applications
Commonly used in architectural facings, monuments, countertops, and as crushed stone in civil engineering construction.
Geological facts
Granite is the most common intrusive igneous rock in Earth's continental crust and is essentially the basement rock of many continental landmasses.
Field identification & locations
Easily identified in the field by its distinct speckled pink and gray interlocking crystal matrix. Found worldwide in shield areas and mountain ranges.
