sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
Hardness: 6 to 7 on the Mohs scale (depending on the cementing material). Color: Tan, yellowish-brown, red, grey, or white. Luster: Dull to earthy. Crystal structure: Clastic texture composed of sand-sized mineral particles or rock fragments, primarily quartz.
- Color
- Tan, yellowish-brown, red, grey, or white
- Luster
- Dull to earthy
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Physical properties
Hardness: 6 to 7 on the Mohs scale (depending on the cementing material). Color: Tan, yellowish-brown, red, grey, or white. Luster: Dull to earthy. Crystal structure: Clastic texture composed of sand-sized mineral particles or rock fragments, primarily quartz.
Formation & geological history
Formed from the accumulation, compaction, and cementation of mineral particles or rock fragments, typically in environments such as deserts, rivers, beaches, or shallow marine areas over millions of years.
Uses & applications
Widely used as a construction material, building stone, paving material, and in landscaping and decorative masonry.
Geological facts
Sandstone is porous and permeable, making it an excellent aquifer for storing groundwater and natural oil and gas reserves. Many famous historical monuments around the world are built from sandstone.
Field identification & locations
Easily identified by its gritty, sandpaper-like texture and visible sand grains. Found worldwide in sedimentary basins and geological formations.
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Other sedimentary specimens
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Fossiliferous Concretion
Septarian Concretion containing Brachiopods/Crinoids
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Quartz pebble
Silicon dioxide (SiO2)
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Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock
sedimentary
Banded Siltstone / Mudstone Pebble
Siltstone / Argillite
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Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary