metamorphic
Quartzite
Metamorphic Quartz
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically gray, white, or reddish-brown, with a vitreous to greasy luster and a non-foliated massive 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 gray, white, or reddish-brown, with a vitreous to greasy luster and a non-foliated massive structure.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and pressure, often during mountain-building events.
Uses & applications
Used in construction, as crushed stone for roads, for decorative aggregates, and occasionally as a dimension stone.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, often forming prominent ridges and peaks in mountain ranges.
Field identification & locations
Can be identified in the field by its sugary texture, inability to be scratched by a steel knife, and failure to fizz with acid.
More like this
