metamorphic
Quartzite pebble
Metamorphic Quartzite
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, white to grey-green color, conchoidal fracture, and compact granular crystal structure.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous luster, white to grey-green color, conchoidal fracture, and compact granular crystal structure.
Formation & geological history
Formed from quartz-rich sandstone subjected to intense heat and tectonic pressure during regional metamorphism.
Uses & applications
Used primarily in construction, decorative landscaping, and as a raw material in manufacturing crushed stone and glass.
Geological facts
Quartzite is extremely durable, often outlasting the surrounding mountain ranges as resistant ridge-forming rock.
Field identification & locations
Identified by its inability to be scratched by a knife and lack of effervescence with acid; commonly found in riverbeds and glacial drift.
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