sedimentary

Sandstone (likely Ferruginous)

Arenite with Iron Oxide cement

AI-generated identification · may be incorrect

Hardness: 6-7 (individual grains); Color: tan, yellow, brown, orange; Luster: matte/earthy; Grain size: 0.06mm to 2mm; Texture: clastic/gritty like sandpaper

Hardness: 6-7 (individual grains)
Color: tan, yellow, brown, orange
Luster: matte/earthy

Identified July 8, 2026More sedimentary →

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Physical properties

Hardness: 6-7 (individual grains); Color: tan, yellow, brown, orange; Luster: matte/earthy; Grain size: 0.06mm to 2mm; Texture: clastic/gritty like sandpaper

Formation & geological history

Formed through the accumulation and cementation of sand-sized mineral particles or rock fragments, typically in river beds, deserts, or coastal environments. Often contains high amounts of iron oxide (hematite/limonite) providing the yellowish-brown hue.

Uses & applications

Commonly used as a building material, paving stones, and for ornamental landscaping due to its durability and color variety.

Geological facts

Sandstone makes up about 10 to 20 percent of the sedimentary rocks on Earth. It serves as an important aquifer for groundwater and can act as a reservoir for oil and natural gas.

Field identification & locations

Identify in the field by its gritty 'sandpaper' feel and visible layering (bedding). It will not fizz with acid unless it has carbonate cement. Found globally in ancient sedimentary basins.