PVW Resources Limited Provides Update on the Metallurgical Sighter Testwork and Mineralogical Results at the Tanami Rare Earth Project
strengths up until 10,000 Gauss. This test resulted in a continual increase in rare earth recovery with minimal decrease in rare earth grade as the magnetic strength was increased. This indicated the ore will be amenable to rare earth upgrade by magnetic separation possibly in combination with an ore sorter to significantly reduce the mass to downstream flotation. It also indicates that further increasing the magnetic intensity will increase the rare earths recovery with minimal further impact on the concentrate rare earth grade. Mineralogical studies: A key to understanding the metallurgical results is understanding the mineralogy. To improve the current understanding of the Killi Killi East mineralisation seven hand-sized rock chip
samples collected in the 2021 field programme were selected for Micro-X-ray Fluorescence (XRF) spectroscopy using the Bruker M4 Tornado Plus spectrometer and imported into Advanced Mineral Identification Classification Software (AMICS). This technique allows for the acquisition of quantitative and qualitative geochemical data at high resolution (micron-scale) paired with manual mineral interpretation to confirm minerals identified using AMICS spectra analysis and to establish mineral abundance. These studies have confirmed mineralisation in multiple styles in both the Pargee Sandstone (TATO002) and the Killi Killi Formation (TATO006). The Pargee Sandstone (TATO002) is an effective host rock for mineralisation, given the porosity and permeability of the conglomerate beds. The Killi Killi breccia (TATO006) contains several distinct structures which are geochemically
unique, which suggests multiple stages of extensive hydrothermal fluid movement and xenotime precipitation. Regional REE Target: The contact between the Pargee Sandstone and the Killi Killi Formation is a regional-scale unconformity of over 18km strike length and is considered prospective for hydrothermal unconformity-related REE mineralisation, examples of which occur across a large part of the Birrindudu Basin (eg. Browns Range, Boulder Ridge). The two main prospect areas, Killi Killi East and Watts Rise occur 12km apart and are both located close to the contact between the
Pargee Sandstone and the Killi Killi Formation. PVW Resources exploration program will target faults and structures that transect the regional unconformity and potentially act as conduits for mineralising fluids. Deposits of the hydrothermal unconformity-related style can have a small areal footprint (<200m) which may require detailed geological mapping and close spaced drilling. As part of the drilling program in April, regional targets
along the unconformity between Watts Rise and Killi Killi East will also be tested. These regional targets are currently still being finalised.