sedimentary
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, waxy to vitreous luster, colorless or milky white, conchoidal fracture with no cleavage.
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, waxy to vitreous luster, colorless or milky white, conchoidal fracture with no cleavage.
Formation & geological history
Formed through the mechanical weathering and water transportation of parent quartz rocks in fluvial or marine environments over millions of years.
Uses & applications
Used in landscaping, decorative gravel, abrasive manufacture, and as aggregate in construction.
Geological facts
Quartz is one of the most abundant and durable minerals on Earth's continental crust, surviving weathering that destroys other minerals.
Field identification & locations
Identified by its high hardness which scratches glass, lack of cleavage, and resistance to chemical weathering, commonly found in riverbeds and beaches.
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