EL 31539 Final Surrender Report for the Period 8th March 2018 to 7th March 2020

Abstract

Secondary copper minerals, mainly malachite and lesser azurite, have been identified in the contact zone between Montejinni Limestone and Kalkarindji basalt in the southern part of EL 31539. The copper mineralized contact zone can be traced along the 200meter altitude elevation contour line over 10 kilometers in the southern part of EL 31539. Preliminary and limited extent soil geochemistry survey results indicate that copper enrichment process occurred in the contact zone between Montejinni Limestone and Kalkarindji basalt. Copper content is lower in the samples collected away from the contact. Field investigations identified surface (floater) specimens containing malachite and other secondary copper minerals over a 300m strike, proximal to the contact between the Montejinni Limestone and the Antrim Plateau Volcanics in an area of historic costeaning for minerals exploration. The area of the reported historic costeans was ground truthed, with no obvious signs of ground disturbance. It is thought that these historic costean locations, as presented in the literature are displaced approx 50-100m from the actual location, which now presents as a small creek Partial leach soil geochemistry was conducted with multi-element analysis, but sampling was cut short due to rain. The results have confirmed the presence of copper, gold, silver and arsenic mineralisation. The results suggest the host rock is intrusive related, though due to heavy rainfalls during the sampling period and the topography being in a flood plain, the responses were below normal expectations. Tempus followed up the anomalous soil sample results with a RC program consisting of the drilling of 38 holes for a total of 1116m within areas of anomalous geochemistry to identify the source of the anomalous geochemistry. The drill program was followed up by a final field visit to undertake site rehabilitation.