sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white to gray in color, with a vitreous to dull luster and conchoidal fracture.
Identified More sedimentary →
Explore Quartz Pebble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 7 on the Mohs scale, typically white to gray in color, with a vitreous to dull luster and conchoidal fracture.
Formation & geological history
Formed through the mechanical weathering and water-transport erosion of larger quartz-bearing parent rocks over thousands to millions of years.
Uses & applications
Used in landscaping, decorative stone, and sometimes as aquarium gravel or raw material for manufacturing glass and silicon.
Geological facts
Quartz is one of the most abundant and durable minerals in Earth's continental crust, highly resistant to both chemical and physical weathering.
Field identification & locations
Easily identified by its high hardness which scratches glass and lack of cleavage. Commonly found in riverbeds, beaches, and alluvial deposits worldwide.
More like this
Other sedimentary specimens
Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion
Calcareous concretion; exact fossil and host-rock composition are not identifiable from the image
fossil
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary