metamorphic
Quartzite
Metamorphic Quartzite
AI-generated identification · may be incorrectHardness of 7 on Mohs scale; color ranges from white and grey to pink or brown; vitreous to greasy luster; non-foliated crystal structure.
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Physical properties
Hardness of 7 on Mohs scale; color ranges from white and grey to pink or brown; vitreous to greasy luster; non-foliated crystal structure.
Formation & geological history
Formed from quartz-rich sandstone subjected to high heat and pressure during tectonic metamorphism over millions of years.
Uses & applications
Used in construction, as crushed stone for roads, and occasionally for decorative architectural tiles or countertops.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, often forming prominent mountain ridges.
Field identification & locations
Identified by its high hardness (scratches glass easily) and lack of effervescence when tested with acid; found worldwide.
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