sedimentary

Sandstone

Arenite (SiO2 based)

Hardness: 6-7 Mohs; Color: Tan, brown, gray; Luster: Dull/Earthy; Crystal structure: Clastic (sand-sized grains); Cleavage: None; Specific gravity: 2.2-2.8

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

Identified May 27, 2026More sedimentary →

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Physical properties

Hardness: 6-7 Mohs; Color: Tan, brown, gray; Luster: Dull/Earthy; Crystal structure: Clastic (sand-sized grains); Cleavage: None; Specific gravity: 2.2-2.8

Formation & geological history

Formed through the accumulation and cementation of mineral particles or rock fragments (sand) in environments like deserts, river beds, or beaches over millions of years.

Uses & applications

Used widely in construction as a building material, for paving, in the manufacturing of glass, and as a decorative stone in landscaping.

Geological facts

Sandstone is often porous enough to act as a reservoir for water, oil, or natural gas. The famous ‘Antelope Canyon’ and ‘The Wave’ are formations composed entirely of sandstone.

Field identification & locations

Identify by its gritty texture (feels like sandpaper) and visible layering (bedding). Commonly found near ancient or modern water bodies and desert regions.