Kogi Iron Limited announced the addition of the Goldsworthy East Iron Ore Project, tenement E45/6248, 90km east of Port Headland in Western Australia to its Australian iron ore portfolio. Geology and Mineralisation: The Project is directly along strike from the Mt Goldsworthy Mine with identical geological sequences and features. Iron mineralisation is developed within the underlying Palaeo- to Mesoarchaean granite greenstone terrane.

The greenstone belt stratigraphy has been subdivided into the lower dominantly volcanic Warrawoona Group of the Pilbara Supergroup and the upper mainly sedimentary Gorge Creek Group which belongs to the De Grey Supergroup. The Warrawoona Group has been subdivided into three main (ultra)mafic-felsic volcanic cycles and is 9 to 18 km thick. The Mt Goldsworthy, Nimingarra, Sunrise Hill, Shay Gap, Cundaline and Yarrie deposits are distributed in that order over an interval of 85 km from WNW to ESE on the northern margin of the exposed Archaean Pilbara craton in north-western Western Australia.

Goldsworthy and Yarrie are ~95 and ~180 km east and ESE of Port Hedland respectively. The Yarrie and Nimingarra deposits continued operating following the closure of many of the Shay Gap-Sunrise iron deposits in 1993 which had commenced mining in 1972 and had in turn overlapped with and replaced the Mt Goldsworthy mine in the west that produced ore from 1965 to 1982. All are developed in the same or similar stratigraphy.

Mineralisation is associated with the 1000 m thick, Cleaverville Formation in the lower sections of the Gorge Creek Group. In the Yarrie area, basement granitoids of the Warrawagine batholith are overlain by a 5 to 15 m thick basal quartzite, which is succeeded in turn by 400 m of banded iron formation (BIF), the Nimingarra Iron Formation, which is the basal member of the Cleaverville Formation and can be correlated with the footwall sequence at Mt Goldsworthy, 90 km to the west. Discontinuous, thin mudstone units in the lower sections of the BIF can be correlated with similar bands in the other deposits between Yarrie and Mt Goldsworthy.

To the north, the BIF is overlain by red shale of the upper Cleaverville Formation. The host sequence is composed of steeply (50 to 75°) dipping banded iron formation, shale, mudstone and chert horizons, intruded to the south by a 2600 Ma granitoid batholith. The Cleaverville Formation is overlain by a transition zone into a sequence of andesitic volcanics.

Acquisition Terms: E45/6248 was applied for following the withdrawal of a previous application over the concession. No third-party consideration is payable. Proposed Work: Detailed ground-based gravity and magnetic surveys; Inversion of gravity and magnetic data to determine areas of low magnetic susceptibility and high gravity response indicative of hematite targets; and Reconnaissance drill testing to determine potential of targets delineated.