sedimentary

Sandstone

Arenite

AI-generated identification · may be incorrect

Hardness: 6-7 Mohs; Color: Tan, brown, yellow, red; Luster: Dull/Earthy; Crystal Structure: Clastic texture; Cleavage: None; Specific Gravity: 2.2-2.8

Hardness: 6-7 Mohs
Color: Tan, brown, yellow, red
Luster: Dull/Earthy

Identified May 3, 2026More sedimentary →

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Physical properties

Hardness: 6-7 Mohs; Color: Tan, brown, yellow, red; Luster: Dull/Earthy; Crystal Structure: Clastic texture; Cleavage: None; Specific Gravity: 2.2-2.8

Formation & geological history

Formed through the accumulation and cementation of mineral particles or rock fragments (detritus) like sand. Commonly formed in river beds, deserts, or coastal areas through lithification over millions of years.

Uses & applications

Primarily used as a construction material for masonry, paving, and decorative garden features. Historically used for architectural landmarks and grindstones.

Geological facts

Sandstone makes up about 10-20% of all sedimentary rocks on Earth. The famous red rock formations in Sedona, Arizona and the Grand Canyon are primarily sandstone.

Field identification & locations

Look for a gritty, sand-like texture that feels like sandpaper. Often contains distinct layering or 'bedding' structures. Widely found in sedimentary basins globally.