sedimentary

Sandstone (Pebble)

Arenite / Clastic Sedimentary Rock

Hardness: 6-7 on Mohs scale (due to quartz content); Color: Tan, buff, or light brown; Luster: Dull/Earthy; Texture: Gritty, sandpaper-like feel; Structure: Clastic (composed of cemented sand-sized grains).

Hardness: 6-7 on Mohs scale (due to quartz content)
Color: Tan, buff, or light brown
Luster: Dull/Earthy

Identified April 7, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the accumulation and cementation of mineral particles or rock fragments, typically quartz or feldspar. This smoothed pebble suggests it was tumbled in a high-energy aquatic environment, such as a beach or riverbed.

Uses & applications

Used in construction (dimension stone), landscaping, and as a reservoir rock in the petroleum industry. As a small pebble, it is primarily of interest for educational purposes or minor decorative use.

Geological facts

Sandstone is one of the most common types of sedimentary rock and provides critical data about the geological history and paleo-environments of an area through grain analysis.

Field identification & locations

Identify in the field by its gritty texture (feels like sandpaper) and visible sand grains. These are commonly found on beaches, near deltas, or in desert deposits. Using a magnifying glass can reveal individual grains and cement.

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