sedimentary
Sandstone
Sedimentary Clastic Rock (Quartz-rich)
Hardness: 6-7 on the Mohs scale, Color: Brownish, tan, reddish, or gray, Luster: Dull to earthy, Crystal Structure: Clastic/granular, Cleavage: None
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Physical properties
Hardness: 6-7 on the Mohs scale, Color: Brownish, tan, reddish, or gray, Luster: Dull to earthy, Crystal Structure: Clastic/granular, Cleavage: None
Formation & geological history
Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, principally quartz and feldspar, typically in environments like deserts, rivers, and beaches over millions of years.
Uses & applications
Used widely in construction as building material, paving stones, and in the manufacturing of glass.
Geological facts
Sandstone formations often preserve ancient ripple marks and fossilized tracks, providing geologists with a window into prehistoric environments.
Field identification & locations
Easily recognized by its grainy texture that feels like sandpaper. Commonly found in sedimentary basins worldwide.
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