metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and granular crystal structure with variable colors including white, gray, and pink.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and granular crystal structure with variable colors including white, gray, and pink.
Formation & geological history
Formed from quartz-rich sandstone subjected to high temperatures and pressures during tectonic metamorphism over millions of years.
Uses & applications
Used extensively in construction, road aggregates, dimension stone, and manufactured countertops due to its extreme durability.
Geological facts
Quartzite is exceptionally resistant to chemical weathering, which is why ancient mountain ridges often consist of this durable rock.
Field identification & locations
Identified by its inability to be scratched by steel and lack of effervescence with acid; commonly found globally in old mountain belts.
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