sedimentary

Sandstone (specifically Lithic or Quartz Arenite)

Arenite (composed primarily of SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 (Mohs scale); Color: tan, yellow, orange-brown due to iron oxide staining; Luster: dull/earthy; Crystal structure: granular clastic texture; Cleavage: none; Specific Gravity: 2.2-2.8

Hardness: 6-7 (Mohs scale)
Color: tan, yellow, orange-brown due to iron oxide staining
Luster: dull/earthy

Identified April 13, 2026More sedimentary →

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Physical properties

Hardness: 6-7 (Mohs scale); Color: tan, yellow, orange-brown due to iron oxide staining; Luster: dull/earthy; Crystal structure: granular clastic texture; Cleavage: none; Specific Gravity: 2.2-2.8

Formation & geological history

Formed from the accumulation and lithification of sand-sized mineral grains or rock fragments. Typically deposited in river, desert, or marine environments over millions of years through compaction and cementation by minerals like silica or calcite.

Uses & applications

Commonly used as a building material, paving stone, in the manufacture of glass, and for decorative masonry. Ground sandstone is also used as an abrasive.

Geological facts

Sandstone makes up about 20-25% of all sedimentary rocks in the Earth's crust. It is a major reservoir for water (aquifers) and fossil fuels (oil and gas) due to its porosity.

Field identification & locations

Identify in the field by its distinctive 'sandpaper' feel and visible grains. Often occurs in layers (bedding). It can be found globally in river beds, canyons, and coastal cliffs.