sedimentary

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 (Mohs scale), Color: tan/buff to light brown, Luster: dull to earthy, Crystal structure: granular clastic texture, Cleavage: none, Specific gravity: 2.2-2.8

Identified July 20, 2026More sedimentary →

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Physical properties

Hardness: 6-7 (Mohs scale), Color: tan/buff to light brown, Luster: dull to earthy, Crystal structure: granular clastic texture, Cleavage: none, Specific gravity: 2.2-2.8

Formation & geological history

Formed through the accumulation and cementation of sand-sized mineral grains or rock fragments, typically in shallow marine, river, or desert environments. This specimen appears to be of the Cenozoic or Mesozoic era based on common surface finds.

Uses & applications

Used widely as building material, in road base, and as a source of silica for glass manufacturing.

Geological facts

Sandstone accounts for about 10-25% of the sedimentary rock on Earth. It is highly porous and often serves as a natural reservoir for groundwater, oil, and gas.

Field identification & locations

Identify by its gritty, sandpaper-like texture and visible sand grains. It is common in riverbeds, canyons, and sedimentary basins. Look for layered bedding planes.