sedimentary

Sandstone (likely Quartzose)

Arenite (primarily SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 (depends on cementation); Color: Tan, brown, or buff; Luster: Dull/Earthy; Crystal Structure: Clastic granular; Cleavage: None; Specific Gravity: 2.2-2.8

Hardness: 6-7 (depends on cementation)
Color: Tan, brown, or buff
Luster: Dull/Earthy

Identified June 7, 2026More sedimentary →

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Physical properties

Hardness: 6-7 (depends on cementation); Color: Tan, brown, or buff; 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 river beds, deserts, or marine environments. It represents geological ages ranging from the Precambrian to recent periods.

Uses & applications

Used widely as a construction material (dimension stone), in glass manufacturing (if high silica), and as a reservoir rock for oil and natural gas.

Geological facts

Sandstone makes up about 20% of all sedimentary rocks on Earth. The famous 'Antelope Canyon' in Arizona was carved out of sandstone by flash flooding.

Field identification & locations

Identify by its 'sandpaper' feel and visible grains. Found globally in basins and coastal regions. For collectors, look for unique banding or fossils within the matrix.