Iron ore is rock rich in iron oxides (Fe 2 O 3) and includes minerals such as hematite and magnetite. Most of the world's ...

The waves of colourful rock within the specimen are made up of black and red bands of iron oxide (mostly haematite and some magnetite), interspersed with lighter sedimentary rock (silica). Scientists ...

"We found hidden between the more conspicuous iron oxides (which gives the rock its bright red color) much more abundant iron clays," University of Western Australia geologist Birger Rasmussen ...