metamorphic
Quartzite
Metamorphic Quartzite
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white to gray in color, with a vitreous to greasy luster and non-foliated massive crystal structure.
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Physical properties
Hardness of 7 on the Mohs scale, typically white to gray in color, with a vitreous to greasy luster and non-foliated massive crystal structure.
Formation & geological history
Formed through the thermal or regional metamorphism of quartz-rich sandstone under intense heat and pressure over millions of years.
Uses & applications
Used widely in construction, railroad ballast, decorative aggregates, and for manufacturing silica brick and countertops.
Geological facts
Quartzite is extremely durable and weather-resistant, often forming prominent mountain ridges because it erodes much slower 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 acid reaction compared to marble.
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