metamorphic

Pink quartzite (probable)

Quartzite; predominantly microcrystalline quartz (SiO₂), with iron-oxide impurities

AI-generated identification · may be incorrect

Typically hardness 7, vitreous to sugary luster, white-to-pink/red coloration, massive granular texture, and no obvious cleavage; pink tones commonly come from hematite or other iron oxides. The specimen appears rough and weathered, but identification from an image is provisional.

Identified September 1, 2026More metamorphic →

Explore Pink quartzite (probable) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Forms when quartz-rich sandstone is recrystallized under heat and pressure during metamorphism, generally in Precambrian to younger mountain belts. It commonly occurs in metamorphic terrains and as resistant stream or glacial cobbles.

Uses & applications

Used as crushed stone, aggregate, architectural or paving stone, and occasionally as a lapidary material. Attractive pink pieces are collected or polished, though this rough specimen likely has modest commercial value.

Geological facts

Quartzite is generally more resistant to weathering than its sandstone precursor and commonly preserves little original sedimentary texture. Iron staining can produce pink, rose, red, or rusty-brown zones.

Field identification & locations

Test by scratching glass (quartzite should scratch it) and checking that dilute hydrochloric acid produces no fizz; a sugary crystalline fracture distinguishes it from sandstone. Common locations include mountain belts worldwide, including Brazil, India, the United States, and Canada.