metamorphic
Quartzite
Metamorphic Quartzite
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white to gray in color, vitreous luster, and massive or granular crystal structure.
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Physical properties
Hardness of 7 on the Mohs scale, typically white to gray in color, vitreous luster, and massive or granular crystal structure.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and pressure, often over millions of years.
Uses & applications
Used widely in construction, as crushed stone for roads, and occasionally as decorative stone or countertops.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, often forming prominent mountain ridges.
Field identification & locations
Identify by its hardness (scratches glass), sugary texture on fractured surfaces, and lack of reaction to acid. Common worldwide.
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