sedimentary

Sandstone

Arenite

Hardness: 6-7 Mohs; Color: Tan, brown, or buff; Luster: Dull/Earthy; Crystal Structure: Clastic texture; Specific Gravity: 2.2-2.8; Feel: Gritty like sandpaper.

Hardness: 6-7 Mohs
Color: Tan, brown, or buff
Luster: Dull/Earthy

Identified June 21, 2026More sedimentary →

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Physical properties

Hardness: 6-7 Mohs; Color: Tan, brown, or buff; Luster: Dull/Earthy; Crystal Structure: Clastic texture; Specific Gravity: 2.2-2.8; Feel: Gritty like sandpaper.

Formation & geological history

Formed through the accumulation and cementation of sand-sized mineral grains (usually quartz or feldspar) in environments like deserts, river beds, or beaches over millions of years.

Uses & applications

Commonly used as a building material, in paving, for grindstones, and as a source of silica for glass manufacturing.

Geological facts

Sandstone formations often preserve fossils and serve as important aquifers and petroleum reservoirs due to their porosity.

Field identification & locations

Identify by its gritty texture and visible bedding planes. Found globally in sedimentary basins. Collectors look for unique patterns like those in 'Wonderstone' or fossils.