sedimentary
Sandstone
Arenite (SiO2 based)
AI-generated identification · may be incorrectHardness: 6-7 (Mohs scale), Color: Brown, tan, or reddish, Luster: Dull/Earthy, Crystal Structure: Granular/Clastic, Texture: Gritty like sandpaper
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Physical properties
Hardness: 6-7 (Mohs scale), Color: Brown, tan, or reddish, Luster: Dull/Earthy, Crystal Structure: Granular/Clastic, Texture: Gritty like sandpaper
Formation & geological history
Formed through the accumulation and cementation of sand-sized mineral grains or rock fragments, typically in riverbeds, deserts, or marine environments over millions of years.
Uses & applications
Used widely in construction as a building stone, in the production of glass (if high silica content), and for grindstones or artistic sculptures.
Geological facts
Sandstone makes up about 10-25% of all sedimentary rocks and is a major reservoir for groundwater and oil due to its porosity.
Field identification & locations
Identify by its gritty texture and visible sand grains. It is often found in river beds and sedimentary layers. Use a magnifying glass to see the individual cemented grains.
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Sedimentary Sandstone
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