metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white, gray, or pink, with a vitreous to greasy luster and a non-foliated massive crystal structure.
Identified More metamorphic →
Explore Quartzite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 7 on the Mohs scale, typically white, gray, or pink, with a vitreous to greasy luster and a non-foliated massive crystal structure.
Formation & geological history
Formed from quartz-rich sandstone subjected to intense heat and pressure during regional metamorphism.
Uses & applications
Used in construction as crushed stone, railroad ballast, and decorative building material, as well as for manufacturing silica brick.
Geological facts
Quartzite is extremely durable and weather-resistant, often forming prominent mountain ridges because it erodes much slower than surrounding rocks.
Field identification & locations
Identified by its sugary texture and inability to be scratched by a knife; found globally in ancient mountain belts.
More like this
