metamorphic
Quartzite
Metamorphic Quartz Sandstone
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, colors ranging from white to gray and pink, vitreous to dull luster, and 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 pink, vitreous to dull luster, and non-foliated massive crystal structure.
Formation & geological history
Formed through the metamorphism of quartz-rich sandstone under intense heat and pressure deep within the Earth's crust.
Uses & applications
Used extensively in construction, as crushed stone for roads, for decorative landscaping, and occasionally in architecture and sculpture.
Geological facts
Quartzite is extremely durable and resistant to chemical weathering, often forming prominent mountain ridges where softer rocks erode away.
Field identification & locations
Identified by its hard, sugary texture that does not fizz with hydrochloric acid and scratches glass easily, commonly found in mountainous regions globally.
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