sedimentary
Sandstone
Arenite (SiO2 based)
AI-generated identification · may be incorrectHardness: 6-7 Mohs; Color: Tan, beige, or light brown; Luster: Dull/Earthy; Crystal structure: Clastic (sand-sized grains); Cleavage: None.
- Hardness
- 6-7 Mohs
- Color
- Tan, beige, or light brown
- Luster
- Dull/Earthy
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Physical properties
Hardness: 6-7 Mohs; Color: Tan, beige, or light brown; Luster: Dull/Earthy; Crystal structure: Clastic (sand-sized grains); Cleavage: None.
Formation & geological history
Formed by the accumulation and cementation of mineral particles or rock fragments (sand) in marine or terrestrial environments such as river beds, deserts, or beaches over millions of years.
Uses & applications
Widely used for construction, decorative stone in masonry, as a reservoir rock for oil and gas, and for aquifers.
Geological facts
Sandstone represents about 20% of all sedimentary rocks on Earth. Its porosity makes it one of the most important rocks for groundwater storage.
Field identification & locations
Identify by its gritty, sandpaper-like feel and visible small grains. Found in desert regions, ancient river beds, and canyons. Avoid confusing with quartzite, which is much harder and lacks the gritty surface.
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Sedimentary Sandstone
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