sedimentary
Sandstone nugget
Arenite (primarily Quartz SiO2)
AI-generated identification · may be incorrectHardness: 6-7 (Mohs scale); Color: Tan, beige, light brown; Luster: Dull to earthy; Crystal structure: Granular/Clastic; Cleavage: None; Specific Gravity: 2.2-2.8
- Hardness
- 6-7 (Mohs scale)
- Color
- Tan, beige, light brown
- Luster
- Dull to earthy
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Physical properties
Hardness: 6-7 (Mohs scale); Color: Tan, beige, light brown; Luster: Dull to earthy; Crystal 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 or rock fragments, typically in river beds, deserts, or marine environments over millions of years.
Uses & applications
Commonly used in construction, road base, and as a material for glass manufacturing if high in quartz; also popular in aquascaping and landscaping.
Geological facts
Sandstone represents about 20% of all sedimentary rocks on Earth. Because of its porosity, it is an important reservoir for groundwater and petroleum.
Field identification & locations
Identify by its gritty, sandpaper-like feel and visible grains. Often found in areas with historical water flow or ancient sand dunes.
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Sedimentary Sandstone
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