sedimentary
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
Hardness: 6-7 (depending on cementation), Color: Tan, brown, yellow, red, or white, Luster: Dull to earthy, Crystal Structure: Clastic with quartz grains, Cleavage: None
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Physical properties
Hardness: 6-7 (depending on cementation), Color: Tan, brown, yellow, red, or white, Luster: Dull to earthy, Crystal Structure: Clastic with quartz grains, Cleavage: None
Formation & geological history
Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, chiefly quartz and feldspar, often in desert, river, or beach environments over millions of years.
Uses & applications
Commonly used in construction, building facades, paving stones, and as an aquifer for groundwater.
Geological facts
Sandstone is responsible for many iconic natural rock formations, including arches, canyons, and monuments around the world due to its differential weathering.
Field identification & locations
Easily identified by its gritty, sandpaper-like texture and visible sand grains. Found worldwide in sedimentary basins.
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