sedimentary

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock - Arenite

AI-generated identification · may be incorrect

Hardness: 6-7 on Mohs scale (due to quartz); Color: Tan, brown, reddish-yellow; Luster: Dull or earthy; Crystal structure: Granular/clastic; Cleavage: None; Specific gravity: 2.2-2.8

Hardness: 6-7 on Mohs scale (due to quartz)
Color: Tan, brown, reddish-yellow
Luster: Dull or earthy

Identified May 7, 2026More sedimentary →

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Physical properties

Hardness: 6-7 on Mohs scale (due to quartz); Color: Tan, brown, reddish-yellow; Luster: Dull or earthy; Crystal structure: Granular/clastic; Cleavage: None; Specific gravity: 2.2-2.8

Formation & geological history

Formed through the accumulation and cementation of sand-sized mineral grains, primarily quartz. These typically form in river beds, beaches, or desert environments over millions of years through lithification.

Uses & applications

Commonly used as a building material, masonry, paving stone, and in the production of glass and industrial abrasives.

Geological facts

Sandstone is one of the most common types of sedimentary rock and often contains fossils. It serves as an important aquifer and reservoir for groundwater and petroleum products due to its porosity.

Field identification & locations

Identify in the field by its gritty texture (feels like sandpaper) and visible sand grains. Found globally in sedimentary basins. Collectors often look for colorful banding or iron staining.