sedimentary
Crushed Stone Gravel
Crushed Limestone or Granite aggregate
AI-generated identification · may be incorrectHardness typically 3 to 7 on the Mohs scale depending on source rock; color ranges from light gray to dark gray; dull luster; angular shape with rough edges.
Identified More sedimentary →
Explore Crushed Stone Gravel in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness typically 3 to 7 on the Mohs scale depending on source rock; color ranges from light gray to dark gray; dull luster; angular shape with rough edges.
Formation & geological history
Formed by mechanically crushing larger quarried bedrock into smaller fragments, often originating from ancient marine deposits or intrusive igneous formations.
Uses & applications
Widely used in civil engineering, road construction, railway ballast, concrete aggregate, and residential landscaping.
Geological facts
Crushed stone is one of the most heavily consumed natural raw materials in the modern construction industry globally.
Field identification & locations
Easily identified by uniform angular gray fragments used extensively as road base and drainage cover; found in quarries 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