sedimentary
Sandstone and Gravel Aggregate
Clastic Sedimentary Rock / Quartzose Sandstone
AI-generated identification · may be incorrectHardness varies from 6 to 7 on the Mohs scale depending on quartz content. Colors range from yellowish-brown, tan, to gray. Luster is typically dull to earthy. Granular texture composed of cemented mineral particles or rock fragments.
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Physical properties
Hardness varies from 6 to 7 on the Mohs scale depending on quartz content. Colors range from yellowish-brown, tan, to gray. Luster is typically dull to earthy. Granular texture composed of cemented mineral particles or rock fragments.
Formation & geological history
Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, typically in depositional environments such as rivers, deserts, and beaches over millions of years.
Uses & applications
Used primarily in construction, road building, concrete production, and as dimension stone for architecture.
Geological facts
Sandstone often preserves ancient ripple marks, fossil footprints, and cross-bedding, providing geologists with a window into prehistoric environments.
Field identification & locations
Commonly found in sedimentary basins worldwide. Identified in the field by its visible sandy texture, grittiness, and layered bedding planes.
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