igneous
Pink granite (likely weathered or pegmatitic granite)
Granite; chiefly quartz (SiO₂), potassium feldspar, plagioclase, and minor biotite/hornblende
AI-generated identification · may be incorrectHardness about 6–7 Mohs; coarse, speckled pink, white, gray, and black grains with a granular texture and generally dull-to-glassy luster. Interlocking crystals indicate an intrusive igneous rock; cleavage occurs mainly in feldspar, while quartz has none.
Identified More igneous →
Explore Pink granite (likely weathered or pegmatitic granite) in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness about 6–7 Mohs; coarse, speckled pink, white, gray, and black grains with a granular texture and generally dull-to-glassy luster. Interlocking crystals indicate an intrusive igneous rock; cleavage occurs mainly in feldspar, while quartz has none.
Formation & geological history
Forms when silica-rich magma cools slowly deep underground, allowing large crystals to grow; most examples are Precambrian to Phanerozoic in age. The specimen’s small size and rounded edges suggest it may be a naturally weathered or broken fragment.
Uses & applications
Widely used as dimension stone, countertops, monuments, tiles, aggregate, and decorative material. Common hand specimens typically have little monetary value.
Geological facts
Pink coloration usually comes from potassium feldspar, while dark flecks are commonly biotite or amphibole. A close alternative could be pink gneiss or granodiorite, but the image most strongly suggests granite.
Field identification & locations
Common in continental mountain belts and exposed shields worldwide, including India, Brazil, Scandinavia, Canada, and the United States. Identify it by visible interlocking quartz and feldspar grains, lack of layering, and inability to scratch it with a steel knife easily.
