sedimentary
Sandstone
Arenite (SiO2 principal)
Hardness: 6-7 (on Mohs scale); Color: Tan, brown, yellow; Luster: Dull/Earthy; Texture: Granular/Sand-like; Porosity: High.
- Hardness
- 6-7 (on Mohs scale)
- Color
- Tan, brown, yellow
- Luster
- Dull/Earthy
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Physical properties
Hardness: 6-7 (on Mohs scale); Color: Tan, brown, yellow; Luster: Dull/Earthy; Texture: Granular/Sand-like; Porosity: High.
Formation & geological history
Formed from the accumulation and cementation of sand-sized mineral grains (usually quartz or feldspar) over millions of years in river beds, beaches, or deserts.
Uses & applications
Extensively used as a building material, paving stone, and in the production of glass and industrial abrasives.
Geological facts
Sandstone can preserve ancient fossilized footprints and ripple marks from prehistoric water bodies. It makes up approximately 20% of the Earth's sedimentary rock.
Field identification & locations
Identify by its gritty, abrasive feel and visible sand grains. Common worldwide in river basins and canyons. Use a magnifying glass to see individual grains.
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Sandstone
Arenite (primarily SiO2)
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