metamorphic
Quartzite
Metamorphic Quartz Arenite
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, colors ranging from white to gray and yellowish brown, vitreous luster, and a non-foliated massive crystal structure.
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Physical properties
Hardness of 7 on the Mohs scale, colors ranging from white to gray and yellowish brown, vitreous luster, and a non-foliated massive crystal structure.
Formation & geological history
Formed through the intense heat and pressure metamorphism of quartz-rich sandstone, typically occurring in mountain-building belts.
Uses & applications
Used extensively as crushed stone in construction, decorative landscaping, and occasionally as dimension stone for building facades.
Geological facts
Quartzite is extremely durable and resistant to weathering, often forming prominent mountain ridges because it erodes much slower than surrounding rocks.
Field identification & locations
Identify in the field by its sugary texture on broken surfaces and the inability of a steel knife to scratch it.
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