Red Sandstone identification and geology

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• Sandstone
• Arkose
• Siltstone

Sources, scope & corrections

These authoritative resources support category-level nomenclature, terminology, identification methods, and safety. When a specimen-specific safety warning appears, the public-health source listed here directly supports that precaution. They are not line-by-line citations for every other property on this entry, and natural specimens vary.

Editorial owner

GeoMiner

Last updated

2026-03-30T14:39:07.14705+00:00

Review status

Published; not independently peer-reviewed

• Rocks — U.S. National Park Service. Authoritative overview of rock groups, the rock cycle, and geologic processes.
• Can you identify my rock or mineral? — U.S. Geological Survey. Identification limitations and routes to in-person professional verification.

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Common questions

What is Red Sandstone?

Sandstone colored red by hematite cement or grain coatings. Indicates oxidizing terrestrial depositional conditions.

How can you identify Red Sandstone?

Compare several properties rather than relying on colour alone. This entry records rock type: Sedimentary Clastic; texture: Clastic, well-sorted; grain size: Sand; common minerals: Quartz, Feldspar, Hematite cement/coating, Clay minerals. Confirm an important identification with additional field tests or qualified laboratory work.

How does Red Sandstone form?

Forms in oxidizing continental environments: deserts, river floodplains, and deltaic settings.

Where is Red Sandstone commonly found?

Old Red Sandstone UK/Europe , Coconino Sandstone Arizona , Navajo Sandstone Utah .

What is Red Sandstone commonly confused with?

Red Sandstone may be confused with Sandstone, Arkose, Siltstone. Compare multiple diagnostic properties because colour and surface appearance can overlap.