sedimentary

Sandstone Pebble

Quartz Arenite / Sandstone

Hardness: 6-7 on Mohs scale (due to quartz composition); Color: Light tan to brownish-reddish; Luster: Dull, earthy; Texture: Medium-grained, rough sandpaper-like feel; Specific Gravity: 2.2 - 2.8

Hardness: 6-7 on Mohs scale (due to quartz composition)
Color: Light tan to brownish-reddish
Luster: Dull, earthy

Identified July 23, 2026More sedimentary →

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Physical properties

Hardness: 6-7 on Mohs scale (due to quartz composition); Color: Light tan to brownish-reddish; Luster: Dull, earthy; Texture: Medium-grained, rough sandpaper-like feel; Specific Gravity: 2.2 - 2.8

Formation & geological history

Formed by the consolidation and cementation of sand-sized grains (mostly quartz) deposited by wind, water, or ice over millions of years in deserts, rivers, or beach environments.

Uses & applications

Commonly used as a decorative landscape stone, building material, aggregate, and for geological study or casual rock collecting.

Geological facts

Sandstone represents about 20 to 25 percent of all sedimentary rocks found worldwide. Water often percolates through sandstone easily, making it an important underground aquifer.

Field identification & locations

Identified by its distinctive gritty texture similar to sandpaper and visible granular sand grains held together by mineral cement. Easily found in riverbeds, canyons, deserts, and erosion areas worldwide.