sedimentary
Sandstone
Clastic Sedimentary Rock
AI-generated identification · may be incorrectHardness varies from 6 to 7 depending on quartz content. Colors range from tan, brown, yellow, red, to grey with a dull luster and granular texture.
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Physical properties
Hardness varies from 6 to 7 depending on quartz content. Colors range from tan, brown, yellow, red, to grey with a dull luster and granular texture.
Formation & geological history
Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, mostly quartz and feldspar, in marine, lake, or desert environments over millions of years.
Uses & applications
Widely used in construction as a building material, paving stone, and for manufacturing glass and abrasives.
Geological facts
Sandstone formations often display distinct layers called cross-bedding, which reveal ancient wind or water flow directions.
Field identification & locations
Easily identified by its gritty, sandpaper-like texture and visible mineral grains; found worldwide in deserts, riverbeds, and ancient sea cliffs.
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