sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white or translucent grey, vitreous luster, conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically white or translucent grey, vitreous luster, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed through the weathering and prolonged aqueous transportation of parent quartz veins or igneous rocks, smoothing sharp edges over millions of years.
Uses & applications
Used in landscaping, decorative stone displays, and occasionally in glass manufacturing or abrasive materials.
Geological facts
Quartz is one of the most abundant and durable minerals in Earth's continental crust, highly resistant to both chemical and mechanical weathering.
Field identification & locations
Identified easily by its inability to be scratched by steel and its smooth, water-worn shape found abundantly in riverbeds and beaches.
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Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion
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Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
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Sandstone or Siltstone
Arenite (if sandstone)
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Sandstone
Arenite
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Shale
Shale (clastic sedimentary rock)
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Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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