metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, typically white to gray or pinkish in color, vitreous luster, and a non-foliated massive crystal structure with no cleavage.
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, typically white to gray or pinkish in color, vitreous luster, and a non-foliated massive crystal structure with no cleavage.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and tectonic pressure over millions of years.
Uses & applications
Used widely in construction for road aggregate, railroad ballast, and decorative facing stone, as well as in the manufacturing of silica bricks.
Geological facts
Quartzite is exceptionally durable and weather-resistant, often outlasting the mountain ranges it forms.
Field identification & locations
Identify it by its ability to scratch glass easily and its lack of bubbling when exposed to hydrochloric acid. Commonly found in mountainous regions worldwide.
More like this
