sedimentary

Sandstone

Sedimentary Rock (Quartz arenite / Lithic sandstone)

AI-generated identification · may be incorrect

Hardness: 6 to 7 on the Mohs scale (depending on cementation); Color: Tan, brown, yellow, red, grey, or white; Luster: Dull to earthy; Crystal structure: Clastic (composed of mineral particles or rock fragments, predominantly quartz); Cleavage: None (fractures unevenly); Specific Gravity: 2.2 to 2.8

Hardness: 6 to 7 on the Mohs scale (depending on cementation)
Color: Tan, brown, yellow, red, grey, or white
Luster: Dull to earthy

Identified July 30, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments (mainly quartz and feldspar) of sand size, typically in environments such as beaches, deserts, floodplains, and shallow marine areas over millions of years.

Uses & applications

Widely used in construction as a building stone, paving material, for making grindstones, and as a reservoir rock for petroleum and natural gas.

Geological facts

Many of the world's most famous monuments and ancient structures, including the Treasury in Petra and parts of the Egyptian temples, were carved directly out of massive sandstone formations.

Field identification & locations

Identified by its gritty texture (feels like sandpaper) and visible sand grains. Found worldwide in sedimentary basins, deserts, and ancient riverbeds. Collectors look for unique banding or fossil impressions.