sedimentary

Sandstone (Quartzite-leaning)

Arenite (primarily SiO2)

Hardness: 6-7 Mohs; Color: Tan, beige, and light brownish-pink; Luster: Dull to earthy; Texture: Granular and clastic; Structure: Lacks visible layering in this fragment but shows gritty surface texture.

Hardness: 6-7 Mohs
Color: Tan, beige, and light brownish-pink
Luster: Dull to earthy

Identified July 15, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the accumulation and cementation of sand-sized mineral grains, primarily quartz. The process involves lithification (compaction and cementation) of sediment transported by water, wind, or ice, typically occurring over millions of years in basins or deserts.

Uses & applications

Used widely as a building material, for paving stones, in the manufacturing of glass, and as a reservoir rock in the petroleum industry. Also used for household decor and garden landscaping.

Geological facts

Sandstone accounts for roughly 20 to 25 percent of all sedimentary rocks on Earth. Famous landmarks like the Grand Canyon and Petra are primarily composed of various types of sandstone.

Field identification & locations

Identify in the field by its gritty 'sandpaper' feel when rubbed. It is extremely common in sedimentary basins worldwide. For collectors, look for versions with unique banding (Liesegang rings) or fossil inclusions.

Other sedimentary specimens

See all

Sandstone or Siltstone

Arenite (if sandstone)

Sedimentary

Fossiliferous Concretion

Septarian Concretion containing Brachiopods/Crinoids

fossil

Shale

Shale (clastic sedimentary rock)

sedimentary

Brown Sandstone (River Rock)

Arenite

sedimentary

Cone-in-cone structure (Limestone)

Cone-in-cone structure (Secondary Sedimentary Structure)

sedimentary

Shale

Argillaceous sedimentary rock

sedimentary