metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, pale blue-grey color, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous luster, pale blue-grey color, and conchoidal fracture.
Formation & geological history
Formed through the metamorphism of quartz sandstone under high heat and pressure, typically during mountain-building events.
Uses & applications
Used in construction, as crushed stone for roads, for manufacturing silica bricks, and occasionally as an ornamental decorative stone.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, often forming prominent ridges and mountains.
Field identification & locations
Identified by its inability to be scratched by steel and lack of effervescence with acid; commonly found globally in ancient orogenic belts.
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