sedimentary
Sandstone
Arenite (SiO2 based)
Hardness: 6-7 (Mohs); Color: Tan, beige, brown; Luster: Dull/Earthy; Crystal structure: Clastic (granular); Cleavage: None; Specific Gravity: 2.2-2.8
- Hardness
- 6-7 (Mohs)
- Color
- Tan, beige, brown
- Luster
- Dull/Earthy
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Physical properties
Hardness: 6-7 (Mohs); Color: Tan, beige, brown; Luster: Dull/Earthy; Crystal structure: Clastic (granular); Cleavage: None; Specific Gravity: 2.2-2.8
Formation & geological history
Formed through the accumulation and cementation of mineral particles or rock fragments (sand) in marine or terrestrial environments. Often dates from the Paleozoic to Mesozoic eras.
Uses & applications
Used primarily in building construction as a dimension stone, as a source of silica for glass making, and in decorative landscaping.
Geological facts
Sandstone makes up about 10 to 20 percent of all sedimentary rocks on Earth. It acts as an excellent aquifer for groundwater storage.
Field identification & locations
Identify by a 'sandpaper' texture and visible layering. It can be found in deserts, river basins, and coastal areas worldwide.
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