sedimentary

Sandstone (specifically Banded Sandstone)

Clastic sedimentary rock (primarily SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 on Mohs scale; Color: Tan, reddish-pink, or light brown with distinct banding; Luster: Dull/Earthy; Crystal structure: Clastic (grainy); Cleavage: None; Specific Gravity: 2.2–2.8.

Hardness: 6-7 on Mohs scale
Color: Tan, reddish-pink, or light brown with distinct banding
Luster: Dull/Earthy

Identified April 1, 2026More sedimentary →

Explore Sandstone (specifically Banded Sandstone) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 6-7 on Mohs scale; Color: Tan, reddish-pink, or light brown with distinct banding; Luster: Dull/Earthy; Crystal structure: Clastic (grainy); Cleavage: None; Specific Gravity: 2.2–2.8.

Formation & geological history

Formed from the accumulation and cementation of mineral particles or rock fragments, typically sand-sized quartz. The banding (Liesegang rings) often results from the precipitation of iron oxides and hydroxides from groundwater flowing through the porous rock.

Uses & applications

Commonly used as a building material, for paving, in decorative masonry, and as a popular specimen for collectors due to its aesthetic banding.

Geological facts

Sandstone makes up about 20-25% of all sedimentary rocks on Earth. Banded sandstone is often marketed under names like 'Picture Sandstone' or 'Landscape Stone' when the patterns resemble natural scenery.

Field identification & locations

Identify in the field by its sand-like texture (feels gritty like sandpaper) and visible layering or rhythmic banding. Common in arid environments and ancient riverbeds.