Where is Iron-rich Sandstone found?
Sedimentary rock, likely sandstone with significant iron oxide cementation
Got a photo? Identify rocks instantly with the Rockby app
Open the appIron-rich Sandstone occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Iron-rich Sandstone
Colorado Plateau, USA
Extensive red bed sequences, such as the Navajo Sandstone and Entrada Sandstone, are classic examples of iron-rich sandstones, giving the region its iconic red rock landscapes.
Western Australia
While famous for banded iron formations, some sedimentary basins also contain significant iron-rich sandstones.
Nubian Sandstone Aquifer System, North Africa
Contains vast sequences of iron-stained sandstones.
Old Red Sandstone, UK
A Devonian-aged sequence of predominantly red sandstones and conglomerates, rich in iron oxides, found across parts of Great Britain and Ireland.
Brazil
Various sedimentary basins contain iron-rich sandstones, particularly in regions with lateritic weathering profiles.
Collecting tips
- Look for Red Beds. Iron-rich sandstones are often part of larger 'red bed' sequences, which are thick successions of red-colored sedimentary rocks. These are common in arid or semi-arid ancient environments.
- Examine Outcrops in Oxidizing Environments. River banks, desert exposures, and coastal cliffs can reveal iron-rich sandstones, especially where groundwater or surface water has interacted with iron-bearing sediments.
- Check for Iron Staining. Even if the rock isn't uniformly red, look for reddish or brownish staining on sandstone outcrops, which indicates the presence of iron oxides.
- Consider Associated Minerals. Sometimes, iron-rich sandstones can be associated with other iron-bearing minerals or even low-grade iron ore deposits, though this is less common for typical iron-rich sandstone.
Quick Check
- Color:
- Red, reddish-brown, brown, yellowish-brown
- Luster:
- Dull to earthy
- Streak:
- Reddish-brown (for hematite-rich), yellowish-brown (for goethite/limonite-rich). A white streak indicates dominant quartz grains with minimal iron cement.
Explore Iron-rich Sandstone
Identify rocks anywhere
Free on iOS, Android, and Web. Photo identification, full database, and your personal collection.