Final report for EL 25681 Roper River

Abstract

During July 2010, geologists of both Tianda Uranium (Australia) Pty Ltd and the consultancy, Terra Search Pty Ltd, worked on the tenement. Exploration was conducted with the assistance of Google Earth imagery, seeking outcrops that might be ferruginized. Nine geochemical samples, fifty geological observation points and sixteen outcrops of the Sherwin Ironstone Member were taken. All locations were recorded on Garmin GPSs using GDA94 projection. Data files were exported from the GPSs and processed and displayed with Mapinfo. The sixteen outcrops of the Sherwin Ironstone Member varied in area from less than 0.1Ha to a maximum of 2.4 Ha, with a median of 0.1Ha. They are all located on or near the tops of hills composed of the Moroak Sandstone Member and are between 0.5 and 2 metres thick, with a total area of about 9 hectares. ICP-OES analysis of the nine rockchip specimens gave values in the range of 11.9% Fe (in ferruginised sandstone) up to a maximum of 43.9% in oolitic ironstone. The median grade was 34.2%. As both the tonnage and grade of iron ore within the tenement is far below economic cutoff, it is decided that the tenement should be relinquished and no more exploration work will be carried out in this tenement.