sedimentary
Sandstone
Quartz arenite / Clastic sedimentary rock
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale due to quartz content; yellow to brown color; dull or earthy luster; clastic texture with visible sand grains.
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Physical properties
Hardness of 6-7 on Mohs scale due to quartz content; yellow to brown color; dull or earthy luster; clastic texture with visible sand 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.
Uses & applications
Widely used in construction for building facades, paving stones, and historically for grinding wheels.
Geological facts
Sandstone formations can absorb large amounts of water, acting as natural aquifers for groundwater storage.
Field identification & locations
Easily identified by its gritty, sandpaper-like texture and visible bedding planes; found worldwide in 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
Shale
Fissile Sedimentary Rock
sedimentary
Sandstone
Arenite
sedimentary
Shale
Clastic sedimentary rock
sedimentary