sedimentary
Sandstone
Sedimentary Rock (Quartz arenite/Arkose)
Hardness of 6 to 7 on the Mohs scale, predominantly brown, reddish, or tan color due to iron oxide staining, dull to earthy luster, clastic or detrital texture consisting mostly of mineral particles or rock fragments.
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Physical properties
Hardness of 6 to 7 on the Mohs scale, predominantly brown, reddish, or tan color due to iron oxide staining, dull to earthy luster, clastic or detrital texture consisting mostly of mineral particles or rock fragments.
Formation & geological history
Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, usually composed mostly of quartz, in environments such as deserts, rivers, and beaches.
Uses & applications
Used widely as a construction material, for building stone, paving, and in the manufacturing of glass.
Geological facts
Sandstone formations can be very durable and often form prominent landmarks, cliffs, and scenic canyons across the globe.
Field identification & locations
Can be identified in the field by its gritty texture, visible sand grains, and layered or massive appearance. Common worldwide.
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Other sedimentary specimens
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Fossiliferous Concretion
Septarian Concretion containing Brachiopods/Crinoids
fossil
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock
sedimentary
Banded Siltstone / Mudstone Pebble
Siltstone / Argillite
sedimentary
Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary