metamorphic
Quartzite Pebble
Metamorphic Quartz Rock (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, waxy to vitreous luster, colors range from grey to white with brownish weathering, and a compact granular crystal structure with no cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, waxy to vitreous luster, colors range from grey to white with brownish weathering, and a compact granular crystal structure with no cleavage.
Formation & geological history
Formed through the regional or contact metamorphism of quartz-rich sandstone under intense heat and pressure, dating across various geological eras.
Uses & applications
Used primarily as decorative landscaping stone, in road construction, and for making silica bricks and coarse aggregates.
Geological facts
Quartzite is extremely durable and weather-resistant, often outlasting the surrounding mountain ranges to form prominent ridges.
Field identification & locations
Easily identified by its inability to be scratched by steel and lack of effervescence with acid; commonly found in riverbeds and glacial drift.
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