Rincon Resources Limited announced the results of an independent assessment and interpretation of recent rock-chip multi-element geochemistry data at its 100% owned Kiwirrkurra IOCG Project, located in the West Arunta Region of Western Australia. Following the recent announcement of high-grade copper-gold rock-chip results from Pokali, which included KRWK001 - 5.75g/t Au, 5.71% Cu & 5.25g/t Ag at Pokali East, and KWRK043 - 2.87g/t Au, 1.2% Cu & 5.07g/t Ag at Pokali South, the comprehensive multi-element assay data has now been assessed and interpreted by independent consultant Dr. Carl Brauhart from Model Earth. The results reveal the presence of a large copper (Cu) - gold (Au) bearing mineral system in the east of Pokali and a second tin (Sn) - tungsten (W) bearing mineral system in the west defined by two distinct and broad metal zonation signatures commonly observed in many large hydrothermal systems. While the two mineral systems are spatially discrete in outcrop, they are likely related to the same overall system at depth.

The presence of two metal zonation signatures of this nature suggests separate oxidised and reduced magmas have intruded and given rise to the fertile hydrothermal fluids at the source of the potentially massive mineral system at Pokali. Key elements in the Cu-Au system metal signature are Au-Cu-Mo-Se and indicate an oxidised magmatic fluid. This style of mineralisation and deposit types include porphyry Cu-Au, IOCG, and intrusion-related gold systems. Key elements in the Sn-W system metal signature are Sn-W-As-Sb and indicate a reduced magmatic fluid.

This style of mineralisation includes reduced intrusion related gold systems and granite-related Sn-W deposits. At this early stage, the Cu-Au system is more likely closer to the heart of an economic Cu-Au deposit at Pokali however, more data from basement samples over a wider area, including under transported regolith, is required to extend understanding of metal zonation across the entire system; this will have important implications for ongoing exploration targeting. Planning is now underway for a detailed geological mapping and additional rock chip sampling program over the outcropping Pokali system.

This will help to better understand the structural and lithological controls to known mineralisation and combined with the new understanding of the geochemistry and metal zonation, will help tightly constrain existing and new drill targets on the area of outcrop. The potential grade, dimensions, and orientation of any compelling targets will be informed by the new surface data and historic drilling. Learnings about stratigraphy, structure and geochemistry that are gleaned from the mapping and surface sampling exercise will also inform interpretations of future drilling through transported cover adjacent to Pokali.

Niobium (Nb) and REE's were found to be present in the system however not at elevated levels that might suggest a critical metal or REE system is present at Pokali. That said, the Company will continue to assess the potential for Carbonatite hosted Nb-REE mineralisation by extending its search beyond the outcropping Pokali area and look to investigate targets undercover which demonstrate geophysical features indicative of Carbonatite intrusions. In this regard, multiple gravity and magnetic anomaly signatures have been identified under shallow sandplain cover and systematically be investigated for Nb-REE potential.