sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, grayish-brown color, vitreous luster, conchoidal fracture, specific gravity of 2.65.
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, grayish-brown color, vitreous luster, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed through the physical weathering and water-transport erosion of larger quartz-bearing rocks over millions of years in fluvial or marine environments.
Uses & applications
Used in landscaping, decorative stone, and as raw material for glassmaking and silicon production.
Geological facts
Quartz is one of the most abundant and durable minerals in the Earth's continental crust, surviving weathering that destroys other minerals.
Field identification & locations
Found worldwide in riverbeds, beaches, and conglomerate rock formations; easily identified by its high hardness and lack of cleavage.
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