sedimentary

Sandstone

Arenite

AI-generated identification · may be incorrect

Hardness: 6-7 on Mohs scale; Color: Tan, brown, yellow, and grey; Luster: Dull to earthy; Crystal structure: Clastic (grains); Cleavage: None; Specific Gravity: 2.2-2.8

Hardness: 6-7 on Mohs scale
Color: Tan, brown, yellow, and grey
Luster: Dull to earthy

Identified July 14, 2026More sedimentary →

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Physical properties

Hardness: 6-7 on Mohs scale; Color: Tan, brown, yellow, and grey; Luster: Dull to earthy; Crystal structure: Clastic (grains); Cleavage: None; Specific Gravity: 2.2-2.8

Formation & geological history

Formed from cemented sand-sized grains of mineral, rock, or organic material. The grains are typically quartz or feldspar. Geological age varies widely from Precambrian to Holocene.

Uses & applications

Widely used in construction for building stone, paving, and crushing into sand for concrete. Also used for grindstones and in glass manufacturing.

Geological facts

Sandstone is one of the most common types of sedimentary rock and is often found in desert environments or ancient river beds. It is responsible for many of the world's most spectacular canyons.

Field identification & locations

Identify by its gritty, sand-like feel and visible grains. Common in arid regions and near coastlines. Collectors look for unique banding or fossil inclusions.