sedimentary
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white or translucent, vitreous luster, conchoidal fracture, and no cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, typically white or translucent, vitreous luster, conchoidal fracture, and no cleavage.
Formation & geological history
Formed through the weathering and prolonged aqueous transport of larger quartz veins or granitic rocks, rounding over millions of years.
Uses & applications
Used in landscaping, decorative gravel, abrasive manufacture, and aggregate for concrete production.
Geological facts
Quartz is one of the most abundant and chemically resistant minerals on Earth's surface, allowing it to survive immense geological weathering.
Field identification & locations
Easily identified by its high hardness (scratches glass) and resistance to acid; commonly found in riverbeds, beaches, and conglomerate sedimentary rocks.
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Sandstone or Siltstone
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Shale (clastic sedimentary rock)
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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