sedimentary
Sandstone
Sedimentary rock primarily composed of quartz sand grains
AI-generated identification · may be incorrectHardness is 6-7 on the Mohs scale, colors vary from tan, brown, yellow to red, and it has a dull luster with a granular texture.
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Physical properties
Hardness is 6-7 on the Mohs scale, colors vary from tan, brown, yellow to red, and it has a dull luster with a granular texture.
Formation & geological history
Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, typically in desert, river, or marine environments over millions of years.
Uses & applications
Commonly used in construction as building stone, paving material, and in the manufacture of glass and abrasives.
Geological facts
Sandstone formations often display distinct parallel layering or cross-bedding created by ancient wind or water currents.
Field identification & locations
Easily identified by its gritty, sandpaper-like texture and visible sand grains; found worldwide in sedimentary basins and arid regions.
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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)
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Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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