Summary:
Mineral Hill project includes five separate mineral deposits: Pearse South, Southern Ore Zone, Jack’s Hut, Red Terror and Parker’s Hill.
Southern Ore Zone
The Southern Ore Zone (SOZ) at Mineral Hill is a structurally controlled polymetallic (Cu-Au to Cu, Pb, Zn, Ag, Au system) vein and breccia system with epithermal - style over prints, hosted by the Late Silurian to Early Devonian Mineral Hill Volcanics, a pile of proximal rhyolitic volcaniclastic rocks with minor reworked volcaniclastic sedimentary rocks.
Alternative interpretation/nomenclature could consider the deposit to be a "Cobar Style" mineralisation, a common name for mineral deposits hosted in the Cobar Superbasin, includes massive sulphides (VMS), clastic hosted Pb-Zn mineralisation and epithermal gold. Alternate interpretations are unlikely to change the estimated tonnes or grade materially.
The SOZ deposit is interpreted to be contained within a broader shear zone with variations in foliation and mineralisation host sites. The anastomosing and en-echelon attitude of the mineralisation has been captured at the scale of drilling.
The current extent of the SOZ deposit strikes approximately 500 m within a structural corridor. The structural corridor dips approximately 65° to the west at depth. The upper proportions of A lode are shallow dipping (20-30° West).
The mineralisation extends from approximately 150 m below the surface to 300 m below the surface, previous operators have developed ore drives on 1100 mRL, 1060 mRL, 1040mRL and a shorter drive on the 1010mRL.
Parker's Hill and Red Terror deposit
The Parkers Hill deposit, located within the Mineral Hill mining complex in central New South Wales, is a volcanogenic massive sulphide (VMS) system hosted in felsic volcaniclastics and sedimentary units typical of the Cobar Basin Mineralisation occurs as semi-massive to massive sulphide lenses dominated by sphalerite (Zn), galena (Pb), and chalcopyrite (Cu), with associated silver (Ag) and minor gold (Au). These zones are structurally controlled, typically forming along fold hinges and fault corridors, and are enveloped by intense silica-sericite-chlorite alteration.
Parkers Hill is interpreted to have been structurally thrust over the underlying Red Terror copper-gold lodes, reflecting a significant deformation event during the basin's tectonic evolution. This structural overprint introduces complexity that may influence grade distribution and continuity, necessitating detailed modelling and targeted drilling. The deposit is considered an advanced open pit target with strong potential for resource expansion through infill and extensional programs.
Geological interpretation across the deposit indicates distinct elemental zonation and structural associations for copper, lead, and zinc, as illustrated on E-W section 850 mN ± 10 m. Copper mineralisation is interpreted to be controlled by steep, west dipping lodes within the fresh domain, which represent the dominant primary geometry. Within the oxide zone these features are strongly overprinted by weathering, with supergene redistribution interpreted to have mobilised copper along -flat lying structures near the water table. This process has imparted a more horizontal attitude to the mineralisation, partially obscuring the underlying steep lodes evident- in the fresh domain. Lead mineralisation is predominantly hosted within the oxide domain, following flatter east dipping- structures. Zinc mineralisation occurs both above and below the lead, but is dominantly developed deeper in the weathering profile within the transitional zone, extending marginally into the fresh domain.