sedimentary

Sandstone

Clastic Sedimentary Rock

Hardness: 6-7 on Mohs scale (depending on cementation). Color: Varies widely including tan, brown, yellow, red, grey, pink, white, and black. Luster: Dull to earthy. Crystal structure: Clastic/granular texture composed of individual mineral grains cemented together. Cleavage: None. Specific gravity: 2.2-2.8

Hardness: 6-7 on Mohs scale (depending on cementation)
Luster: Dull to earthy

Identified July 28, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed from the accumulation, compaction, and cementation of mineral particles or rock fragments, principally quartz and feldspar, in environments such as deserts, rivers, lakes, and shallow marine areas over millions of years.

Uses & applications

Widely used as a construction material for building facades, paving stones, flagstones, and historically for grinding stones and whetstones.

Geological facts

Sandstone formations often create dramatic geological features such as arches, canyons, and cliffs, and can act as effective aquifers for groundwater storage due to their porous nature.

Field identification & locations

Identifiable by its gritty texture, visible sand-sized grains, and sometimes distinct bedding planes. Found globally in sedimentary basins, deserts, and ancient riverbeds.