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Iron ore is a big deal in Australia ... Although they're on land now, their story starts in the ancient oceans. BIFs are ...

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 ...

Credit: Graeme Churchard/Flickr, CC BY 2.0 Banded iron formations (BIFs) are striking, red-hued sedimentary rocks that contain ... causing it to precipitate as iron ore. A new study published ...

2,500 mya: Banded iron formations Banded iron formations (BIFs) are sedimentary rocks deposited extensively ... primary source of today's global iron ore supply. From the 600 trillion tons of ...