A substantial area (~50 square km in extent) of unusual surface ironstone enrichment on the Quaternary peneplain lying to the east of Etadunna Homestead on the southern Birdsville Track was investigated for its possible economic potential as a source of iron ore. The extent and indicative geochemistry of the iron occurrence was determined by collecting 352 rock chip samples on a nominal 400 m x 400 m grid spacing across the licence area, which were assayed for a wide range of elements including rare earths and gold. Composite samples of the most iron-rich parts of the occurrence were also studied metallurgically. It was found that about one-third of the lag samples assayed contained iron levels of around 50% Fe, but only very few samples had more than 55%. The ferruginisation, which usually occurs as a layer of about 20 cm thickness, appears to relate to the base of the "Stuart Pedoderm" formed within Late Cretaceous Winton Formation claystones and siltstones. Field observations suggest that the ironstone may have formed by the deposition of ferruginous sediments in low-lying areas of an alluvial floodplain during pre - Eyre Formation periods of lessened aridity. The average levels of silica, alumina and phosphorus in the more iron-rich lag samples were found to be significant at 8%, 2% and 0.13% respectively, making the occurrence seem less attractive for possible surface mining as a source of haematite ore. Metallurgical testwork was carried out on a bulk sample of 20 kg of ironstone, to determine the optimum separation methods for removal of the above impurities. Following sample crushing and grinding, it was found that up to half of the silica could be removed by a two-stage magnetic separation process. Further work using Ericsson Cone dense media separation methods on three larger, 20 kg bulk samples showed that at SG settings of between 3.0 and 3.4, a +5 mm composite feed having an iron content of 88% Fe2O3 produced an output grading roughly 56% Fe, while losing about 27% Fe in the overflow stream. The multi-element assay data disclosed an arcuate zone of low order elevated Ag/Cu/Mo/Au in the south-western portion of the sampling grid, with molybdenum values of up to 58 ppm Mo against a background of 2-4 ppm. Normally this would be interpreted as a footprint of classic porphyry - style mineralisation, but the basement in this region was thought to lie at depths of 1 km or more below surface. Consequently the source of the anomaly was inferred to lie at much shallower depth, within Palaeozoic or younger cover rocks. Plans were made to conduct infill geochemical sampling over the anomaly on a 200 m x 100 m grid spacing. During September 2011, trial ground magnetic profiles covering 43.6 line km were acquired in two places having the best development of iron-rich lag, to try to determine the depth extent of these occurrences and quantify their concentration and thickness. It was found in general that increased magnetic responses on the survey profiles are evident at the positions of Quaternary alluvial channels crossing the licence area. No further work took place on the licence, and tenure was allowed to lapse at the end of Year 2.