sedimentary
Sandstone
Quartz Arenite
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale, reddish-brown color due to iron oxide, dull luster, clastic texture with visible quartz grains.
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Physical properties
Hardness of 6-7 on Mohs scale, reddish-brown color due to iron oxide, dull luster, clastic texture with visible quartz grains.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, typically in desert, beach, or river environments.
Uses & applications
Commonly used in construction as building stone, dimension stone, and for paving or landscaping.
Geological facts
Sandstone often preserves ancient ripple marks and fossilized tracks, providing clues to prehistoric environments.
Field identification & locations
Easily identified by its gritty, sandpaper-like texture and visible sand grains; 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