sedimentary
Brown Sandstone (River Rock)
Arenite
Mohs hardness: 6-7, Color: Brown/Tan, Luster: Dull/Earthy, Grain size: 0.06 to 2 mm, Cleavage: None (granular)
- Hardness
- 6-7, Color: Brown/Tan, Luster: Dull/Earthy, Grain size: 0
- Color
- Brown/Tan, Luster: Dull/Earthy, Grain size: 0
- Luster
- Dull/Earthy, Grain size: 0
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Physical properties
Mohs hardness: 6-7, Color: Brown/Tan, Luster: Dull/Earthy, Grain size: 0.06 to 2 mm, Cleavage: None (granular)
Formation & geological history
Formed through the accumulation and compaction of mineral particles or rock fragments, primarily quartz and feldspar, in riverbeds or coastal environments over millions of years.
Uses & applications
Construction, landscaping, building stone, and architectural decoration.
Geological facts
Sandstone is one of the most common types of sedimentary rock and accounts for about 20% of all sedimentary rocks on Earth.
Field identification & locations
Identified by its gritty 'sandpaper' feel and visible layers or granules. Commonly found in riverbeds, canyons, and desert environments.
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