sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
AI-generated identification · may be incorrectHardness 6-7 on Mohs scale, colors vary from tan and brown to red and yellow, dull to earthy luster, quartz grains cemented together.
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Physical properties
Hardness 6-7 on Mohs scale, colors vary from tan and brown to red and yellow, dull to earthy luster, quartz grains cemented together.
Formation & geological history
Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz, in marine, desert, or river environments.
Uses & applications
Widely used in construction as a building material, dimension stone, and paving, as well as in the manufacture of glass.
Geological facts
Sandstone formations often preserve ancient desert dunes or riverbeds, providing a detailed record of Earth's paleoclimate.
Field identification & locations
Identify by its distinct gritty texture and visible sand-sized grains; commonly found globally in arid regions and ancient river 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 (clastic sedimentary rock)
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Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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