metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, granular to massive crystal structure, and pinkish-red color due to iron oxide impurities.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous luster, granular to massive crystal structure, and pinkish-red color due to iron oxide impurities.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone subjected to intense heat and pressure deep within the Earth's crust.
Uses & applications
Used in construction as crushed stone for roads, dimension stone for architecture, and occasionally for decorative carvings.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, often forming prominent mountain ridges.
Field identification & locations
Identified by its inability to be scratched by steel and its gritty, sugar-like fractured surface; found globally in ancient mountain belts.
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