sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white, clear, or light tan, with a vitreous luster and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, typically white, clear, or light tan, with a vitreous luster and conchoidal fracture.
Formation & geological history
Formed through the weathering and prolonged water transport of parent rock, typically originating in hydrothermal veins or pegmatites.
Uses & applications
Used in landscaping, decorative gravel, construction aggregate, and glass manufacturing.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and is exceptionally resistant to weathering.
Field identification & locations
Found worldwide in riverbeds, beaches, and alluvial deposits; identified by its high hardness and lack of cleavage.
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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
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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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