metamorphic
Quartzite
Metamorphic Quartz Sandstone
AI-generated identification · may be incorrectHardness of 7 on the 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 the Mohs scale, typically white to gray or pinkish, vitreous luster, non-foliated massive crystal structure.
Formation & geological history
Formed under high heat and pressure from quartz-rich sandstone, commonly occurring in mountainous or folded tectonic belts.
Uses & applications
Used extensively in construction, as crushed stone for roads, and occasionally as a decorative architectural stone or for countertops.
Geological facts
Quartzite is extremely durable and weather-resistant, often forming prominent ridges and mountains because it resists erosion better than surrounding rocks.
Field identification & locations
Can be identified in the field by its sugary texture, inability to be scratched by a knife, and lack of reaction to acid; found globally.
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