sedimentary
Sandstone
Quartz Arenite / Clastic Sedimentary Rock
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale, predominantly tan, yellow, or reddish-brown with a dull luster, composed of cemented mineral grains, typically quartz.
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Physical properties
Hardness of 6-7 on Mohs scale, predominantly tan, yellow, or reddish-brown with a dull luster, composed of cemented mineral grains, typically quartz.
Formation & geological history
Formed through 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 in construction as a building and paving material, for dimension stone, and in industrial manufacturing.
Geological facts
Sandstone formations often display distinct cross-bedding layers that reveal ancient wind or water current directions.
Field identification & locations
Identify by visible sand-sized grains and a gritty texture; commonly found in deserts, canyons, and coastal cliffs worldwide.
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Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion
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Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary