sedimentary

Sandstone (Quartzose Sandstone)

Sandstone (SiO2 dominant composition)

AI-generated identification · may be incorrect

Hardness: 6-7 on Mohs scale; Color: light tan, grey, buff, and reddish-brown iron staining; Luster: earthy to dull; Texture: medium-grained, rough gritty feel, visible faint bedding planes.

Hardness: 6-7 on Mohs scale
Color: light tan, grey, buff, and reddish-brown iron staining
Luster: earthy to dull

Identified July 24, 2026More sedimentary →

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Physical properties

Hardness: 6-7 on Mohs scale; Color: light tan, grey, buff, and reddish-brown iron staining; Luster: earthy to dull; Texture: medium-grained, rough gritty feel, visible faint bedding planes.

Formation & geological history

Formed through the accumulation, compaction, and cementation of mineral particles or rock fragments, primarily quartz grains deposited in ancient river, lake, or desert environments.

Uses & applications

Widely used as a building material, paving stone, landscape stone, and crushed aggregate for construction.

Geological facts

Sandstone rocks often preserve sedimentary structures like cross-bedding and ripple marks, offering valuable clues about ancient environments and water or wind currents.

Field identification & locations

Identified by its sandy, sandpaper-like surface feel and visible quartz grain texture. Commonly found in riverbeds, cliffs, quarries, and landscape features throughout North America and worldwide.