sedimentary
Sandstone
Clastic sedimentary rock
AI-generated identification · may be incorrectHardness of 6 to 7 on the Mohs scale, colors range from tan, brown, yellow, to red, dull to earthy luster, quartz-rich mineral composition with varying grain sizes.
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Physical properties
Hardness of 6 to 7 on the Mohs scale, colors range from tan, brown, yellow, to red, dull to earthy luster, quartz-rich mineral composition with varying grain sizes.
Formation & geological history
Formed from 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 in the manufacturing of glass and abrasives.
Geological facts
Sandstone formations often preserve ancient ripple marks and cross-bedding, providing geologists with vital clues about past environments.
Field identification & locations
Easily identified by its gritty texture and visible sand grains; commonly found in sedimentary basins, cliffs, and desert regions 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
Shale
Fissile Sedimentary Rock
sedimentary
Sandstone
Arenite
sedimentary
Shale
Clastic sedimentary rock
sedimentary