sedimentary
Sandstone
Quartz Arenite
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, predominantly grey with a weathered yellowish-brown iron oxide rim, dull luster, and clastic texture.
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Physical properties
Hardness of 6-7 on the Mohs scale, predominantly grey with a weathered yellowish-brown iron oxide rim, dull luster, and clastic texture.
Formation & geological history
Formed from the accumulation, compaction, and cementation of mineral particles or rock fragments, typically in desert, beach, or river environments.
Uses & applications
Used widely in construction as a building material, dimension stone, and for paving.
Geological facts
Sandstone formations can act as excellent aquifers for groundwater storage due to their porous nature.
Field identification & locations
Identify by its distinct sandy texture and visible mineral grains; commonly found worldwide in sedimentary basins.
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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
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary