metamorphic
Quartzite
Metamorphic Quartz Arenite (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white to grey or pinkish, vitreous luster, non-foliated massive crystal structure, conchoidal fracture.
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 to grey or pinkish, vitreous luster, non-foliated massive crystal structure, conchoidal fracture.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and pressure, typically in mountain-building or tectonic plate collision zones.
Uses & applications
Used in construction as crushed stone, railroad ballast, dimension stone, and for manufacturing silica brick and glass.
Geological facts
Quartzite is extremely resistant to weathering and erosion, which is why ridges formed of quartzite often stand out as high mountain crests.
Field identification & locations
Identify in the field by its sugary texture on broken surfaces and the fact that it will scratch glass easily while not reacting with acid. Found globally.
More like this
