sedimentary

Weathered sedimentary rock (likely sandstone)

Quartz-rich sandstone; exact identification requires a close-up or tests

AI-generated identification · may be incorrect

Tan-brown, dull and rough, with a fine-grained, somewhat layered appearance. Likely dominated by quartz and cementing minerals; hardness and crystal structure cannot be determined reliably from the image.

Identified October 10, 2026More sedimentary →

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Physical properties

Formation & geological history

Probably formed from compacted and cemented sand, but its geological age and setting cannot be established from appearance alone.

Uses & applications

Ordinary sandstone is used as building or paving stone and as a landscape or collecting specimen.

Geological facts

Sandstone can vary widely in grain size, mineral content, and cement, so color alone is not diagnostic.

Field identification & locations

The visible flattened, weathered piece appears rock-like, but its exact identity is uncertain; inspect grains and test hardness to distinguish sandstone from other rocks. Common worldwide in sedimentary formations.