sedimentary
Sandstone
Clastic Sedimentary Rock
AI-generated identification · may be incorrectHardness varies from 6 to 7 depending on cement; colors range from tan, brown, yellow to red; dull luster; granular texture composed mainly of quartz grains.
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Physical properties
Hardness varies from 6 to 7 depending on cement; colors range from tan, brown, yellow to red; dull luster; granular texture composed mainly of quartz grains.
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 as a construction and paving material, for decorative facing, and in the manufacture of glass.
Geological facts
Sandstone formations often act as natural aquifers for groundwater and can store vast amounts of petroleum and natural gas.
Field identification & locations
Identify in the field by its distinct visible sand grains and gritty texture; commonly found in deserts, riverbeds, and ancient sea floors worldwide.
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