metamorphic
Quartzite
Metamorphic Quartz Arenite
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, vitreous luster, granular crystal structure, conchoidal fracture, and specific gravity around 2.65.
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Physical properties
Hardness of 7 on Mohs scale, vitreous luster, granular crystal structure, conchoidal fracture, and specific gravity around 2.65.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and pressure over millions of years.
Uses & applications
Used extensively in construction as crushed stone, railway ballast, dimension stone, and for manufacturing silica brick.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, often forming prominent mountain ridges.
Field identification & locations
Identified by its hard, non-foliated texture and inability to be scratched by a steel knife; common worldwide in ancient mountain belts.
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