Nearly all of Australia's iron ore exports are high-grade hematite ore, ... in the Hamersley mountain range of Western Australia because the range sits on a banded iron formation.BHP (ASX:BHP ...

In the Pilbara most hematite is found in spectacular layered sedimentary rock known as banded iron formations (BIF) that are most obvious in gorges and places like Karijini National Park.

Huge iron ore deposits in Western Australia's Hamersley Province formed when major tectonic events led to the breakup of supercontinent Columbia and to the amalgamation of Australia.

Today, these 2.45-billion-year-old sedimentary rock deposits are called banded iron formations. They represent a unique archive of the interactions between Earth’s continents, oceans and atmosphere ...

The iron content of these banded iron formations is generally less than 30%. For the rock to become economically viable to mine, it must be naturally converted by later processes to around 60% iron.

Knowing about the different types of iron ore is useful for investors interested in the space. Iron, a key material in steel and other applications, is most often found in hematite and magnetite ...

The iron content of these banded iron formations is generally less than 30%. For the rock to become economically viable to mine, it must be naturally converted by later processes to around 60% iron.