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 hexagonal crystal system when un-weathered.
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Physical properties
Hardness of 7 on the Mohs scale, typically white or translucent, vitreous luster, conchoidal fracture, and hexagonal crystal system when un-weathered.
Formation & geological history
Formed through intense weathering and aqueous transport of igneous or metamorphic rocks over millions of years, leaving behind durable quartz.
Uses & applications
Used widely in landscaping, aggregate, manufacturing of glass, and as a raw material for silicon production.
Geological facts
Quartz is one of the most abundant minerals in the Earth's continental crust and is exceptionally resistant to weathering.
Field identification & locations
Identified by its high hardness (scratches glass) and lack of cleavage, commonly found in riverbeds, beaches, and conglomeratic sedimentary rock formations.
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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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