sedimentary
Sandstone
Clastic Sedimentary Rock
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale depending on cement. Colors include tan, brown, yellow, red, and grey, with a dull to earthy luster.
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Physical properties
Hardness of 6-7 on Mohs scale depending on cement. Colors include tan, brown, yellow, red, and grey, with a dull to earthy luster.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz, in marine, desert, or river environments.
Uses & applications
Widely used in construction as a building stone, paving material, and in the manufacture of glass and concrete.
Geological facts
Famous structures globally, including ancient temples and modern monuments, are carved from sandstone due to its workability and durability.
Field identification & locations
Identified by its visible sand-grain texture and gritty feel. Common worldwide in desert regions, riverbeds, and ancient sedimentary basins.
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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
Sandstone
Arenite
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary