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Location: 290 km S from Port Hedland, Western Australia, Australia
125 St Georges TerracePerthWestern Australia, Australia6000
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The South Flank series of deposits is in production. South Flank is located on the southern flank of the Weeli Wolli anticline. Supergene M-G mineralisation is hosted by MM IF and the West Angela Member of the Wittenoom Formation. Phanerozoic sediments infill the EW-trending valley, underlain by the dolomitic Wittenoom Formation, between South Flank and the Governor Range to the south (the latter is made of BKM IF).Bedrock mineralisation extends continuously over a strike length of 27km. Mineralised widths range up to 1.3km and mineralisation extends to 300m vertical depth in places. Although the regional dip of the bedrock is moderately to the south, there are a number of meso-scale folds with sinuous hinge lines which result in a network of synclinal keels and an anastomosing pattern of mineralisation. The synclinal keels tend to be intensely mineralised and typically have thrust-thickened, steep to overturned, N-facing limbs which are also well mineralised, thanks to the combination of steep bedding dip and structurally-enhanced permeability. Some mineralisation is also developed on moderately S-dipping portions of the southern flank of the Weeli Wolli anticline in the absence of meso-scale folding.Mineralisation style: Bedded ore types classified as per host Archaean or Proterozoic iron formation, which are Brockman, Marra Mamba and Nimingarra; also present is iron-rich detrital material.
