metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically brown, gray, or white with a vitreous to greasy luster and massive crystal structure.
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Physical properties
Hardness of 7 on the Mohs scale, typically brown, gray, or white with a vitreous to greasy luster and massive crystal structure.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and pressure over millions of years.
Uses & applications
Used in construction, as crushed stone for road bases, in manufacturing glass, and as decorative dimension stone.
Geological facts
Quartzite is extremely durable and weather-resistant, often forming prominent mountain ridges because it resists erosion better than surrounding rocks.
Field identification & locations
Identified by its inability to be scratched by steel and its lack of effervescence with acid; commonly found globally in ancient mountain belts.
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