metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, vitreous luster, conchoidal fracture, white to pink or gray color, and massive crystalline 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 Mohs scale, vitreous luster, conchoidal fracture, white to pink or gray color, and massive crystalline structure.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and tectonic pressure, typically over millions of years.
Uses & applications
Used widely in construction, road surfacing, decorative landscaping, and occasionally as a gemstone or carving material.
Geological facts
Quartzite is exceptionally durable and weather-resistant, often forming prominent mountain ridges because it resists erosion better than surrounding rocks.
Field identification & locations
Identify by its inability to be scratched by a steel knife and lack of fizzing with acid; commonly found worldwide in ancient mountain belts.
More like this
