sedimentary
Sandstone
Arenite (SiO2 primarily)
Hardness: 6-7 (Mohs scale), Color: tan/brown/yellow, Luster: dull/earthy, Texture: clastic/gritty like sandpaper, Porosity: high
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Physical properties
Hardness: 6-7 (Mohs scale), Color: tan/brown/yellow, Luster: dull/earthy, Texture: clastic/gritty like sandpaper, Porosity: high
Formation & geological history
Formed by the accumulation and cementation of sand-sized mineral grains (primarily quartz) in river beds, deserts, or coastal environments over millions of years.
Uses & applications
Construction material, glass manufacturing, architectural stone, and popular for garden landscaping.
Geological facts
Sandstone formations hold about 20% of the world's groundwater and petroleum reserves due to their high porosity.
Field identification & locations
Identify by its gritty texture (feels like sandpaper) and visible sand grains. Found globally in canyon lands, beaches, and old riverbeds.
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