At the Marandoo Operations of Hamersley Iron. Left: A Hamersley Iron geologist (left) explains the geology of the martite-goethite Marra Mamba ores at Marandoo. Centre: Within the goethite rich zone. Right: Section of the Marandoo pit with Mount Bruce in the background exposing the Brockman Iron Formation - comprising the lower Joffre Member BIFs on the peak, underlain progressively by recessive Whaleback Shale, the more chunky Dales Gorge BIFs, the Mount McRae Shale, the thin Bruno's Band BIF and "Tram Tracks" and the Wittenoom Dolomite which in turn overlies the Marra Mamba Iron Formations of the Marandoo mine in the foreground.
Photographs by Mike Porter
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