sedimentary
Sandstone (Quartzose)
Arenite (SiO2 based)
Hardness: 6-7 Mohs; Color: Tan, brown, or buff; Luster: Dull/Earthy; Structure: Granular/Clastic; Cleavage: None; Specific Gravity: 2.2-2.8
- Hardness
- 6-7 Mohs
- Color
- Tan, brown, or buff
- Luster
- Dull/Earthy
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Physical properties
Hardness: 6-7 Mohs; Color: Tan, brown, or buff; Luster: Dull/Earthy; Structure: Granular/Clastic; Cleavage: None; Specific Gravity: 2.2-2.8
Formation & geological history
Formed through the accumulation and cementation of sand-sized mineral grains, primarily quartz. Typically forms in river beds, beaches, or desert environments over millions of years.
Uses & applications
Commonly used as a building material, in decorative landscaping, as an abrasive agent, and for manufacturing glass when high in silica content.
Geological facts
Sandstone often preserves fossil remains and sedimentary structures like ripple marks or cross-bedding, providing a record of prehistoric environments.
Field identification & locations
Identify by its gritty texture (feels like sandpaper) and visible sand grains. Found globally in sedimentary basins and outcrops.
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