sedimentary

Sandstone Grain

Clastic Sedimentary Rock Grain (SiO2 dominated)

AI-generated identification · may be incorrect

Hardness: 6-7 (Mohs scale), Color: tan/beige, Luster: dull/earthy, Crystal structure: microcrystalline quartz, Cleavage: none, Specific gravity: 2.65

Identified May 27, 2026More sedimentary →

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Physical properties

Hardness: 6-7 (Mohs scale), Color: tan/beige, Luster: dull/earthy, Crystal structure: microcrystalline quartz, Cleavage: none, Specific gravity: 2.65

Formation & geological history

Formed through the weathering and erosion of pre-existing rocks, transport by water or wind, and deposition in environments like riverbeds or beaches. This specific grain likely broke off from a larger sandstone formation.

Uses & applications

In bulk, sandstone is used for construction, glass manufacturing, and as a reservoir rock for oil and gas. Individual grains help form soil and beach environments.

Geological facts

Sandstone is one of the most common sedimentary rocks on Earth and makes up approximately 20% of all sedimentary rock in the Earth's crust.

Field identification & locations

Identify in the field by its gritty texture (feels like sandpaper) and its ability to scratch glass if quartz-rich. Commonly found in deserts, river basins, and coastal areas.