sedimentary
Sandstone
Clastic Sedimentary Rock
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale depending on cement, colors range from tan to red, dull to earthy luster, quartz-dominated composition with fine to coarse grains.
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Physical properties
Hardness of 6-7 on Mohs scale depending on cement, colors range from tan to red, dull to earthy luster, quartz-dominated composition with fine to coarse grains.
Formation & geological history
Formed from the accumulation, compaction, and cementation of mineral particles or rock fragments, typically in desert, river, or beach environments over millions of years.
Uses & applications
Widely used in construction, building facades, paving stones, and historically for grinding stones.
Geological facts
Sandstone formations like Zion National Park display stunning cross-bedding features that reveal ancient wind or water flow directions.
Field identification & locations
Easily identified by its gritty, sandpaper-like 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
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Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
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Sandstone
Arenite
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Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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