sedimentary
Sandstone
Quartz arenite
AI-generated identification · may be incorrectHardness 6-7 on Mohs scale, typically brown, tan, or reddish, dull to earthy luster, quartz grain structure, specific gravity around 2.2-2.8.
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Physical properties
Hardness 6-7 on Mohs scale, typically brown, tan, or reddish, dull to earthy luster, quartz grain structure, specific gravity around 2.2-2.8.
Formation & geological history
Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz, over millions of years.
Uses & applications
Widely used in construction for building stone, paving, and formerly for grindstones.
Geological facts
Sandstone formations often preserve ancient desert dunes or riverbeds and can store vast amounts of groundwater.
Field identification & locations
Easily identified by its visible sandy texture and grainy feel; commonly found in deserts, river valleys, and mountainous sedimentary layers.
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