metamorphic
Quartzite with Pyrite
Metamorphic Quartz-Rich Rock with FeS2
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous to greasy luster, variable white to gray color with metallic brassy specks, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous to greasy luster, variable white to gray color with metallic brassy specks, and conchoidal fracture.
Formation & geological history
Formed from quartz-arenite sandstone subjected to high heat and pressure during tectonic metamorphism over millions of years.
Uses & applications
Used in construction, decorative landscaping, road aggregate, and as a mineral specimen for collectors.
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 the presence of cubic or granular metallic pyrite crystals; found globally in metamorphic belts.
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