sedimentary

Sandstone (Quartzose)

Arenite (SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 (individual grains); Color: Tan, beige, or light brown; Luster: Dull/Earthy; Crystal structure: Clastic/Granular; Cleavage: None; Specific Gravity: 2.2-2.8

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

Identified June 21, 2026More sedimentary →

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Physical properties

Hardness: 6-7 (individual grains); Color: Tan, beige, or light brown; Luster: Dull/Earthy; Crystal structure: Clastic/Granular; Cleavage: None; Specific Gravity: 2.2-2.8

Formation & geological history

Formed through the accumulation and cementation of sand-sized mineral grains or rock fragments, typically in desert, river, or ocean environments over millions of years.

Uses & applications

Commonly used in construction as a building material and paving stone; also used for glass manufacturing when high in silica.

Geological facts

Sandstone contains a significant portion of the Earth's groundwater or petroleum reservoirs due to its high porosity and permeability.

Field identification & locations

Identify by its gritty, sandpaper-type feel and visible sand grains. Found globally in sedimentary basins. Collectors often look for unique banding or fossils within it.