sedimentary

Sandstone (likely Quartzose)

Arenite (SiO2 principal mineral)

AI-generated identification · may be incorrect

Hardness: 6-7 (Mohs scale), Color: tan to light brown, Luster: dull/earthy, Crystal structure: granular clastic texture, Cleavage: none, Specific gravity: 2.2-2.8

Identified April 12, 2026More sedimentary →

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Physical properties

Hardness: 6-7 (Mohs scale), Color: tan to light brown, Luster: dull/earthy, Crystal structure: granular clastic texture, 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. Occurs in diverse environments including deserts, river beds, and beaches. Age can vary from modern to billions of years old.

Uses & applications

Used widely as a construction material (dimension stone), in the manufacture of glass, and for decorative masonry.

Geological facts

Sandstone makes up about 20-25% of all sedimentary rocks on Earth. It is a major reservoir for water (aquifers) and fossil fuels due to its porosity.

Field identification & locations

Identify in the field by its 'sandpaper' feel when rubbed and the visible presence of small, uniform grains. It is extremely common in dry, canyon-rich environments like the American Southwest.