sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 (Mohs scale); Color: Tan, grey, or light brown; Luster: Dull/Earthy; Texture: Granular, feels like sandpaper; Structure: Clastic; Specific Gravity: 2.2-2.8

Hardness: 6-7 (Mohs scale)
Color: Tan, grey, or light brown
Luster: Dull/Earthy

Identified April 18, 2026More sedimentary →

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Physical properties

Hardness: 6-7 (Mohs scale); Color: Tan, grey, or light brown; Luster: Dull/Earthy; Texture: Granular, feels like sandpaper; Structure: Clastic; Specific Gravity: 2.2-2.8

Formation & geological history

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

Uses & applications

Extensively used in construction for paving, walling, and decorative architecture; also used in glass manufacturing if the quartz content is high.

Geological facts

Sandstone can preserve fossilized remains and ripples from ancient water currents or wind patterns, acting as a 'tape recorder' for past environments.

Field identification & locations

Identify in the field by its gritty texture and visible sand-sized grains. It is one of the most common sedimentary rocks found globally, especially in plateau regions and canyons.