sedimentary
Sandstone (Pebble/Gravel Fragment)
Arenite (primarily SiO2 with mineral cement)
AI-generated identification · may be incorrectHardness varies from 6 to 7 (quartz grains); earthy to dull luster; tan to light beige color with a granular, sandpaper-like texture.
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Physical properties
Hardness varies from 6 to 7 (quartz grains); earthy to dull luster; tan to light beige color with a granular, sandpaper-like texture.
Formation & geological history
Formed by the deposition, compaction, and cementation of mineral particles or rock fragments, typically in riverbeds, deserts, or marine environments.
Uses & applications
Commonly used in construction aggregate, concrete, road base, and architectural building stone.
Geological facts
Sandstone can preserve fossil footprints and ripple marks from ancient dunes and shallow seabeds.
Field identification & locations
Identified by its gritty texture and visible sand-sized grains; widespread globally in sedimentary basins and riverbeds.
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