sedimentary
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale due to quartz content; colors range from tan, brown, yellow to red; dull or earthy luster; granular texture.
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Physical properties
Hardness of 6-7 on Mohs scale due to quartz content; colors range from tan, brown, yellow to red; dull or earthy luster; granular texture.
Formation & geological history
Formed from the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz, over millions of years in desert, river, or marine environments.
Uses & applications
Widely used as a construction and dimension stone for buildings, paving, and flagging, as well as an aquifer rock for groundwater.
Geological facts
Sandstone formations often display distinct cross-bedding layers that reveal ancient wind or water flow directions. Famous architectural monuments worldwide are built from this durable stone.
Field identification & locations
Identified by its visible sand-sized grains and gritty texture; commonly found in sedimentary basins and arid or coastal regions globally.
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Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
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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