sedimentary
Sandstone Pebble
Sedimentary quartz arenite
AI-generated identification · may be incorrectHardness 6-7 on the Mohs scale, brown color, dull luster, granular crystal structure, poor cleavage, specific gravity around 2.2-2.6.
Identified More sedimentary →
Explore Sandstone Pebble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness 6-7 on the Mohs scale, brown color, dull luster, granular crystal structure, poor cleavage, specific gravity around 2.2-2.6.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, typically in desert, river, or beach environments over millions of years.
Uses & applications
Used primarily in construction, landscaping, and as a decorative stone.
Geological facts
Sandstone often preserves ancient ripple marks and fossil footprints from the environments where the sand originally accumulated.
Field identification & locations
Easily identified by its gritty texture and visible sand grains; commonly found in riverbeds, beaches, and sedimentary rock layers 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