sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale, typically brown, tan, or reddish, dull to earthy luster, composed mainly of quartz grains.
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Physical properties
Hardness of 6-7 on Mohs scale, typically brown, tan, or reddish, dull to earthy luster, composed mainly of quartz grains.
Formation & geological history
Formed from the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz, over millions of years.
Uses & applications
Commonly used in construction, as dimension stone, for paving, and in the manufacture of glass.
Geological facts
Sandstone formations often preserve ancient desert dunes and riverbeds, providing vital clues about prehistoric environments.
Field identification & locations
Easily identified by its gritty texture resembling sandpaper and visible sand-sized grains; found worldwide 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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