metamorphic
Quartzite
Metamorphic Quartzite (SiO2)
AI-generated identification · may be incorrectMohs hardness of 7, vitreous to greasy luster, conchoidal fracture, and typically pink, white, or gray in color.
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Physical properties
Mohs hardness of 7, vitreous to greasy luster, conchoidal fracture, and typically pink, white, or gray in color.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and pressure, often during mountain-building events.
Uses & applications
Used extensively in construction, as crushed stone for road bases, and occasionally for decorative landscaping.
Geological facts
Quartzite is extremely durable and weather-resistant, often forming prominent ridges and peaks in mountain ranges.
Field identification & locations
Identify in the field by its sugary texture on broken surfaces and inability to be scratched by a steel knife.
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