metamorphic
Quartzite
Metamorphic Quartz Arenite
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, typically white to gray or pinkish, vitreous luster, non-foliated massive crystal structure.
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Physical properties
Hardness of 7 on Mohs scale, typically white to gray or pinkish, vitreous luster, non-foliated massive crystal structure.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and pressure, often dating back billions of years.
Uses & applications
Used extensively in construction, as crushed stone for roads, and occasionally for decorative countertops and ornamental items.
Geological facts
Quartzite is exceptionally durable and weather-resistant, which is why ridges made of it often form prominent mountain summits.
Field identification & locations
Identified easily by its inability to be scratched by steel and its refusal to fizz with hydrochloric acid; found globally in mountainous regions.
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