sedimentary
Sandstone
Sedimentary Clastic Rock
AI-generated identification · may be incorrectHardness varies from 6 to 7 on the Mohs scale depending on cementation; typically tan, brown, or reddish; dull luster; composed mostly of quartz grains.
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Physical properties
Hardness varies from 6 to 7 on the Mohs scale depending on cementation; typically tan, brown, or reddish; dull luster; composed mostly of quartz grains.
Formation & geological history
Formed from the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz, over millions of years in various environments like deserts, rivers, and beaches.
Uses & applications
Widely used in construction as a building material, paving stone, and in the manufacturing of glass and ceramics.
Geological facts
Sandstone formations often preserve ancient ripple marks and fossils, providing key insights into prehistoric environments and climate conditions.
Field identification & locations
Easily identified by its gritty, sandpaper-like texture and visible mineral grains; commonly found in sedimentary basins worldwide.
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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
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Shale
Fissile Sedimentary Rock
sedimentary
Sandstone
Arenite
sedimentary
Shale
Clastic sedimentary rock
sedimentary