sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

AI-generated identification · may be incorrect

Hardness: 6-7 on Mohs scale; Color: Tan, beige, or yellowish-brown; Luster: Dull to earthy; Structure: Clastic with visible sand-sized grains; Cleavage: None; Specific Gravity: 2.3-2.4

Hardness: 6-7 on Mohs scale
Color: Tan, beige, or yellowish-brown
Luster: Dull to earthy

Identified June 13, 2026More sedimentary →

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Physical properties

Hardness: 6-7 on Mohs scale; Color: Tan, beige, or yellowish-brown; Luster: Dull to earthy; Structure: Clastic with visible sand-sized grains; Cleavage: None; Specific Gravity: 2.3-2.4

Formation & geological history

Formed from the accumulation and cementation of sand-sized mineral particles or rock fragments, typically in riverbeds, deserts, or marine environments. This specimen has been rounded by fluvial (water) erosion.

Uses & applications

Commonly used as building material, in the manufacture of glass (if high silica), for paving stones, and as an ornamental garden stone.

Geological facts

Sandstone accounts for roughly 20 to 25 percent of all sedimentary rocks on Earth. The visible stripes or layers are called bedding planes, representing different pulses of sediment deposition.

Field identification & locations

Identify by its gritty texture (feels like sandpaper) and visible bedding layers. Commonly found in riverbeds, canyons, and coastal cliffs. Collectors should look for unique banding or fossil inclusions.