On rainy days, the iron-rich rock literally rusts, but this day the air was dry, and the descending pack kicked up tiny fantails of red dust.

Much of the banded, iron-rich sedimentary rock in Karijini's striking gorges dates back an astounding 2 billion years.

This is necessary for the rock to even be considered an iron-rich sedimentary rock.

Some examples of minerals in iron-rich rocks containing oxides are limonite, hematite, and magnetite.

Iron formations must be at least 15% iron in composition, just like ironstones and all iron-rich sedimentary rocks.

Hematite is an iron-oxide mineral that can precipitate when ground water circulates through iron-rich rocks, whether at normal temperatures or in hot springs.

The stone all over this place had the reddish tinge of iron-rich rock.

The iron-rich rock seemed to shield them from magic.

Just one big slab of iron-rich rock that's been worn away and exposed.