sedimentary
Sandstone
Sedimentary Clastic Rock
AI-generated identification · may be incorrectHardness varies from 6 to 7 on the Mohs scale depending on cementation; colors include tan, brown, yellow, red, and grey; granular texture with a dull luster.
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Physical properties
Hardness varies from 6 to 7 on the Mohs scale depending on cementation; colors include tan, brown, yellow, red, and grey; granular texture with a dull luster.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz and feldspar, over millions of years in various terrestrial and aquatic environments.
Uses & applications
Widely used as a construction material for building and paving, as well as in the manufacture of glass and abrasives.
Geological facts
Many famous historical monuments and ancient structures around the world were carved directly from massive sandstone formations due to its workability.
Field identification & locations
Identified by its visible sand grains and gritty texture; commonly found in desert regions, ancient riverbeds, and coastal areas 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
Sandstone
Arenite
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary