sedimentary

Sandstone (Quartzose)

Arenite

AI-generated identification · may be incorrect

Hardness: 6-7 (individual quartz grains); Color: Tan, beige, or light brown; Luster: Dull/Earthy; Texture: Clastic, medium-grained (sand-like feel); Composition: Primarily quartz grains with silica or calcite cement.

Hardness: 6-7 (individual quartz grains)
Color: Tan, beige, or light brown
Luster: Dull/Earthy

Identified July 1, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed from the accumulation and lithification of sand-sized mineral grains or rock fragments. Typically deposited in river beds, beaches, or desert environments during various geological eras from the Precambrian to present.

Uses & applications

Extensively used in construction as a building stone and paving material; also used in glass manufacturing if the quartz purity is high.

Geological facts

Sandstone layers can capture a record of Earth's history, often preserving ripple marks, cross-bedding from ancient dunes, or trace fossils.

Field identification & locations

Identify in the field by its gritty texture (feels like sandpaper) and visible layers of sediment. Common in the Colorado Plateau, USA, and various canyonlands globally.