sedimentary
Sandstone
Clastic Sedimentary Rock
AI-generated identification · may be incorrectHardness varies from 6 to 7 on the Mohs scale depending on cementation; typically tan, brown, yellow, or grey; dull luster; composed of cemented sand-sized quartz or feldspar grains.
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Physical properties
Hardness varies from 6 to 7 on the Mohs scale depending on cementation; typically tan, brown, yellow, or grey; dull luster; composed of cemented sand-sized quartz or feldspar grains.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz, in marine, desert, or river environments over millions of years.
Uses & applications
Widely used as a construction material for building facades, paving stones, and masonry, as well as an abrasive and in glassmaking.
Geological facts
Sandstone formations can store vast quantities of groundwater and petroleum, making them crucial reservoir rocks in geology.
Field identification & locations
Easily identified by its gritty, sandpaper-like texture and visible mineral grains; found globally in ancient depositional 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
Shale
Fissile Sedimentary Rock
sedimentary
Sandstone
Arenite
sedimentary
Shale
Clastic sedimentary rock
sedimentary