
sedimentary
Sandstone
Clastic Sedimentary Rock
AI-generated identification · may be incorrectHardness varies from 6 to 7 on the Mohs scale depending on cementation. Colors range from tan, brown, yellow, red, to grey, with a dull to earthy luster.
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Physical properties
Hardness varies from 6 to 7 on the Mohs scale depending on cementation. Colors range from tan, brown, yellow, red, to grey, with a dull to earthy luster.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz, over millions of years.
Uses & applications
Widely used as a construction material for building facades, paving stones, and historically for grinding wheels.
Geological facts
Sandstone layers often record ancient environments like deserts, beaches, and riverbeds, preserving ripple marks and cross-bedding.
Field identification & locations
Easily identified by its gritty, sandpaper-like texture and visible sand grains. Found globally in sedimentary basins.
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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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