sedimentary
Sandstone
Clastic Sedimentary Rock
Hardness: 6-7 (depending on cement), Color: Brown, tan, yellow, red, grey, Luster: Dull to earthy, Crystal Structure: Clastic/granular (quartz grains cemented together), Cleavage: None, Specific Gravity: 2.2-2.8
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Physical properties
Hardness: 6-7 (depending on cement), Color: Brown, tan, yellow, red, grey, Luster: Dull to earthy, Crystal Structure: Clastic/granular (quartz grains cemented together), Cleavage: None, Specific Gravity: 2.2-2.8
Formation & geological history
Formed by 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
Used widely in construction as building stone, paving material, and in the manufacturing of glass and concrete.
Geological facts
Sandstone formations often make up famous geographical landmarks, such as the cliffs in Zion National Park or Petra in Jordan, due to their resistance to weathering.
Field identification & locations
Easily identified by its gritty, sandpaper-like texture and visible mineral grains. Found worldwide in sedimentary basins.
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