sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

AI-generated identification · may be incorrect

Hardness: 6-7 on Mohs scale (depending on cementation), Color: Yellow to tan, Luster: Dull to earthy, Crystal Structure: Clastic with quartz grains, Cleavage: None, Specific Gravity: 2.2-2.8

Identified July 30, 2026More sedimentary →

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Physical properties

Hardness: 6-7 on Mohs scale (depending on cementation), Color: Yellow to tan, Luster: Dull to earthy, Crystal Structure: Clastic with quartz grains, Cleavage: None, Specific Gravity: 2.2-2.8

Formation & geological history

Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz sand, in marine, desert, or river environments over millions of years.

Uses & applications

Commonly used in construction, building facades, paving, and as an aquifer reservoir rock for groundwater and petroleum.

Geological facts

Sandstone is widely used in architecture around the world because it is easy to carve yet durable. Famous monuments like Petra in Jordan and parts of the White House in Washington, D.C. are constructed from sandstone.

Field identification & locations

Easily identified in the field by its gritty texture like sandpaper and visible sand grains. Found worldwide in sedimentary basins, deserts, and ancient riverbeds.