sedimentary
Red Sandstone
Clastic Sedimentary Rock
AI-generated identification · may be incorrectHardness of 6-7 on Mohs scale, reddish-brown color due to iron oxide, dull to earthy luster, quartz-rich mineral composition with fine to medium grain size.
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Physical properties
Hardness of 6-7 on Mohs scale, reddish-brown color due to iron oxide, dull to earthy luster, quartz-rich mineral composition with fine to medium grain size.
Formation & geological history
Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, typically in desert or river environments over millions of years.
Uses & applications
Widely used as a dimensional building stone, for paving, landscaping, and historical monuments.
Geological facts
The distinctive red color comes from iron oxide (hematite) acting as a cement between sand grains. Many famous architectural structures globally are built from red sandstone.
Field identification & locations
Identify by visible sand grains, gritty texture, and red or brown coloration. Found worldwide in sedimentary basins.
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