A small area located in the northern Flinders Ranges and centred ~60 km north-east of Leigh Creek has been explored for possible altered sediment - hosted gold deposits of disseminated, Carlin style which are genetically associated with hot, basement interacting dispersive hydrothermal fluids. To try to find these deposits, licensee Yandan Gold Mines (Yandan) is targeting siltstone lithologies in prospective sedimentary units that are close to known gold workings and occur in structurally complex settings, and has utilised research conducted by CODES at the University of Tasmania (UTAS) to identify such strata and fertile places within the Adelaide Geosyncline orogenic setting. The genetic model holds that the fine grained gold now seen within these clastic units is positioned within remnant, still abundant interstitial organic matter and diagenetic pyrite that are believed to be sourced from what was gold-enriched ocean water during their time of deposition. This gold has since then become re-located and often also concentrated to ore grades by the pervasive action of hydrothermal, structural or magmatic processes. The subject tenement area was chosen by Yandan mainly because it lies adjacent to a complexly folded part of the Flinders Ranges that forms the terrain of the Vulkathunha - Gammon Ranges National Park, where the model-requisite intra - Amberoona Formation gold remobilising and concentrating processes may have been acting over a long period. During the first licence year, Yandan collated publicly available past exploration data and public domain geological / geophysical / remote sensing data to inform a planned site visit, surface geochemical sampling and geological mapping programme. Using the CODES research findings, Yandan identified the Neoproterozoic Amberoona Formation as being prospective for sediment - hosted gold mineralisation. An examination of TMI data showed a circular feature to the east of EL 5813 that was suggestive of a concealed intrusive complex that could be a source to gold mineralisation in historical workings at Walters Well, Primrose and Nevada in the northern part of the licence area. During licence Year 2, no field work was done. Yandan began evaluating past explorers' prospect-scale geophysical surveys, which included an IP survey performed in 1992 at the Nevada prospect by CRA Exploration, and a helicopter-borne aerial EM survey acquired in June 2007 over the Gills Bluff prospect by Black Range Minerals. During licence Year 3, in July 2018, Yandan visited the outcrops of Amberoona Formation in the north-eastern corner of EL 5813 near the Nevada prospect, and collected 51 grab rock chip samples to submit for laboratory multielement assaying. Only 6 of the samples, which were gossanous, returned significant (>2 ppm Au) gold values, but the overall tenor of the reconnaissance geochemical results was insufficient to encourage any further work, so the company chose to fully surrender tenure.