sedimentary
Sandstone
Arenite (primarily SiO2)
AI-generated identification · may be incorrectHardness 6-7 on Mohs scale; tan, gritty texture with an earthy to dull luster; composed of sand-sized mineral particles or rock fragments cemented together.
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Physical properties
Hardness 6-7 on Mohs scale; tan, gritty texture with an earthy to dull luster; composed of sand-sized mineral particles or rock fragments cemented together.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral or rock grains over millions of years in desert, river, or beach environments.
Uses & applications
Commonly quarried for building stone, paving, and decorative aggregate, as well as a source of silica for industrial glass production.
Geological facts
Sandstone formations often serve as major natural aquifers and reservoirs for groundwater and petroleum due to their high porosity and permeability.
Field identification & locations
Identified in the field by its sandpaper-like gritty feel and granular appearance; found globally in stratified sedimentary rock basins.
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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)
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