metamorphic
Quartzite
Metamorphic quartz arenite
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous to greasy luster, variable color including gray and white, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous to greasy luster, variable color including gray and white, and conchoidal fracture.
Formation & geological history
Formed from quartz-rich sandstone subjected to intense heat and pressure during tectonic metamorphism.
Uses & applications
Used in construction, as crushed stone for roads, and occasionally for decorative landscaping or countertops.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, often forming prominent mountain ridges.
Field identification & locations
Identify by its ability to scratch glass and lack of effervescence with acid; common globally in deformed mountain belts.
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