Rock Identifier
Quartzite (Metamorphic Quartzite) — metamorphic
metamorphic

Quartzite

Metamorphic Quartzite

AI-generated identification · may be incorrect

Hardness of 7 on the Mohs scale, typically pink, white, or gray, with a vitreous to greasy luster and non-foliated crystal structure.

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Physical properties

Hardness of 7 on the Mohs scale, typically pink, white, or gray, with a vitreous to greasy luster and non-foliated crystal structure.

Formation & geological history

Formed through the metamorphism of quartz-rich sandstone under intense heat and pressure over millions of years.

Uses & applications

Used in construction, as crushed stone for roadbeds, and occasionally for decorative items or countertops.

Geological facts

Quartzite is extremely durable and weather-resistant, often forming prominent mountain ridges because it resists erosion.

Field identification & locations

Can be identified by its inability to be scratched by steel and lack of reaction to acid; commonly found in mountainous regions globally.