sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 (Mohs scale); Color: Cream, tan, or light buff with orange iron staining; Luster: Dull/Earthy; Crystal structure: Granular (clastic texture); Specific Gravity: 2.2-2.8; Feel: Sandpaper-like grit.

Hardness: 6-7 (Mohs scale)
Color: Cream, tan, or light buff with orange iron staining
Luster: Dull/Earthy

Identified April 5, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the accumulation and lithification (cementation) of sand-sized mineral particles or rock fragments. Typically deposited in river, beach, or desert environments over millions of years.

Uses & applications

Used widely as a building material, paving stone, and in the manufacturing of glass and grindstones. It is also an important reservoir rock for groundwater and petroleum.

Geological facts

Sandstone makes up about 20% of all sedimentary rocks on Earth. Famous landmarks like the Grand Canyon and Petra in Jordan are primarily composed of various types of sandstone.

Field identification & locations

Identify in the field by its gritty texture (feels like sandpaper when rubbed). It often displays visible layering or 'bedding.' Found globally in sedimentary basins and coastal areas.