sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, white to translucent color, vitreous luster, hexagonal crystal system, and no cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, white to translucent color, vitreous luster, hexagonal crystal system, and no cleavage.
Formation & geological history
Formed through the mechanical weathering and water-transport erosion of primary quartz-bearing rocks over millions of years.
Uses & applications
Used in landscaping, decorative gravel, tumbling stones, and historically in stone tool manufacture.
Geological facts
Quartz is one of the most abundant and chemically resistant minerals on Earth's continental crust.
Field identification & locations
Identified by its high hardness, conchoidal fracture, and resistance to acid; commonly found in riverbeds and beaches worldwide.
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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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Shale (clastic sedimentary rock)
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Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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