sedimentary
Sandstone (with Moss)
Quartz Arenite / Sandstone
Hardness: 6-7 on Mohs scale (for quartz grains); Color: Brownish-tan, olive-green weathering, reddish iron stains; Luster: Dull, earthy; Crystal Structure: Granular/clastic texture; Cleavage: None; Specific Gravity: 2.2-2.8
- Hardness
- 6-7 on Mohs scale (for quartz grains)
- Color
- Brownish-tan, olive-green weathering, reddish iron stains
- Luster
- Dull, earthy
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Physical properties
Hardness: 6-7 on Mohs scale (for quartz grains); Color: Brownish-tan, olive-green weathering, reddish iron stains; Luster: Dull, earthy; Crystal Structure: Granular/clastic texture; Cleavage: None; Specific Gravity: 2.2-2.8
Formation & geological history
Formed from the deposition and cementation of sand-sized grains of mineral, rock, or organic material over millions of years in riverbeds, lakes, or oceans.
Uses & applications
Commonly used in construction, paving, landscaping, and aggregate production. Raw weathered field specimens have little commercial value.
Geological facts
Sandstone rocks frequently support growth of moss, lichen, and algae due to their porous, moisture-retaining surface structure.
Field identification & locations
Identified by its grainy, sandpaper-like texture and earthy brown to reddish hues. Abundant worldwide in exposed bedrock, riverbeds, and fields.
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