sedimentary

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 (Mohs scale) if quartz-rich; Color: Tan, beige, or yellowish-brown; Luster: Dull/Earthy; Crystal structure: Clastic (grains); Cleavage: None; Grains often feel like sandpaper to the touch.

Hardness: 6-7 (Mohs scale) if quartz-rich
Color: Tan, beige, or yellowish-brown
Luster: Dull/Earthy

Identified April 22, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed from the accumulation and cementation of sand-sized mineral grains or rock fragments. Produced in high-energy environments like deserts, beaches, or river deltas.

Uses & applications

Construction material, road base, architectural stone, and as a reservoir rock for water, oil, and natural gas.

Geological facts

Sandstone accounts for about 10-20% of all sedimentary rocks on Earth. Its porosity makes it a critical primary source for aquifers and petroleum reservoirs.

Field identification & locations

Identify by its gritty texture (feels like sandpaper) and visible sand grains. Found globally in continental shelf and desert regions. Collectors look for unique banding or fossil inclusions.