sedimentary
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, typically tan, brown, or reddish, with a dull to earthy luster and a clastic texture composed mostly of quartz grains.
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Physical properties
Hardness of 6-7 on the Mohs scale, typically tan, brown, or reddish, with a dull to earthy luster and a clastic texture composed mostly of quartz grains.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, typically in desert, river, or marine environments over millions of years.
Uses & applications
Widely used in construction as a building stone, paving material, and in the manufacturing of glass and abrasives.
Geological facts
Sandstone formations often display distinct layering called bedding, which records ancient environmental conditions like wind or water currents.
Field identification & locations
Easily identified by its gritty, sandpaper-like texture and visible mineral grains, commonly found in sedimentary basins 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