sedimentary
Sandstone
Clastic sedimentary rock (quartz arenite)
AI-generated identification · may be incorrectHardness 6-7 on the Mohs scale, colors range from tan, brown, yellow to red, dull to earthy luster, and composed mostly of quartz sand grains cemented together.
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Physical properties
Hardness 6-7 on the Mohs scale, colors range from tan, brown, yellow to red, dull to earthy luster, and composed mostly of quartz sand grains cemented together.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz, in environments like deserts, rivers, and beaches over millions of years.
Uses & applications
Widely used as a construction material for building facades, paving stones, flagstones, and historically for grinding stones and whetstones.
Geological facts
Sandstone formations can be very porous, often serving as excellent natural reservoirs for groundwater, petroleum, and natural gas.
Field identification & locations
Easily identified in the field by its distinct gritty, sandpaper-like texture and visible sand grains. Found worldwide in geological basins and layered sedimentary cliffs.
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