metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and typically white to gray with various mineral tinges.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and typically white to gray with various mineral tinges.
Formation & geological history
Formed from quartz-rich sandstone subjected to intense heat and pressure over millions of years.
Uses & applications
Used in construction, as crushed stone for roads, for decorative landscaping, and occasionally as dimension stone.
Geological facts
Quartzite is extremely resistant to weathering and erosion, often forming prominent ridges and resistant mountain peaks.
Field identification & locations
Identify by its hardness (scratches glass easily) and lack of reactivity with acid; common globally in ancient mountain belts.
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