sedimentary
Sandstone (Weathered Boulder)
Arenite
AI-generated identification · may be incorrectHardness 6-7 on Mohs scale; dull, earthy luster; granular texture composed primarily of cemented quartz and feldspar grains; gray to tan-brown color.
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Physical properties
Hardness 6-7 on Mohs scale; dull, earthy luster; granular texture composed primarily of cemented quartz and feldspar grains; gray to tan-brown color.
Formation & geological history
Formed through the accumulation, compaction, and cementation of sand-sized mineral particles in alluvial or desert environments over millions of years.
Uses & applications
Commonly used as crushed stone, construction aggregate, dimension stone for buildings, and landscaping.
Geological facts
Sandstones often preserve ripple marks or cross-bedding indicating ancient water or wind flow directions, and serve as major subterranean reservoirs for water and petroleum.
Field identification & locations
Identified in the field by its gritty sandpaper-like feel, visible sand grains, and resistance to acid. Found worldwide in sedimentary basins and exposed arid terrains.
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