sedimentary
Red Sandstone
Clastic sedimentary rock (primarily quartz grains with iron oxide cement)
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, reddish-brown color due to hematite, dull to earthy luster, and a granular texture with visible sand grains.
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Physical properties
Hardness of 6-7 on the Mohs scale, reddish-brown color due to hematite, dull to earthy luster, and a granular texture with visible sand grains.
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 construction and building stone, for paving, and in landscaping applications.
Geological facts
The reddish hue is caused by iron oxide coating the quartz sand grains, acting as a natural cement holding the rock together.
Field identification & locations
Identified by its gritty texture and visible sand grains; commonly found in ancient desert rock formations worldwide.
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