metamorphic
Quartzite
Quartzite
Hard, non-foliated metamorphic rock consisting largely of quartz. Typically white to grey, often with a sugary appearance. Hardness of 7 on the Mohs scale.
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Physical properties
Hard, non-foliated metamorphic rock consisting largely of quartz. Typically white to grey, often with a sugary appearance. Hardness of 7 on the Mohs scale.
Formation & geological history
Formed by the metamorphism of pure quartz sandstone through heating and pressure, usually related to tectonic compression.
Uses & applications
Used in construction, as a decorative stone, for countertops, and historically for stone tools.
Geological facts
Quartzite is highly resistant to chemical weathering and often forms ridges and resistant hilltops.
Field identification & locations
Identified by its sugary texture and hardness (can scratch glass). Commonly found in mountain belts and shield areas.
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