Walparuta Copper Gold Project, SA

The Walparuta Copper-Gold Project is 100% owned and comprises three contiguous exploration licences covering approximately 220km² in the southern Curnamona Province of South Australia, a well-established polymetallic province that hosts several significant iron-oxide copper-gold (IOCG) deposits, including Havilah Resources’ Kalkaroo and Mutaroo deposits located approximately 50–80km from Walparuta.

The project area is underlain by Palaeoproterozoic Willyama Supergroup rocks, overlain by younger sediments and intruded by granitoids and pegmatites, providing a favourable geological setting for IOCG-style mineralisation as well as potential for shear-hosted gold, stratabound sulphides and rare earth element mineralisation. Historic mining at Walparuta and Weekaroo produced copper ore from magnetite-rich breccia systems, confirming the presence of a mineralised system.

Previous exploration has been limited, with only nine drill holes completed to a maximum depth of approximately 230m. These programs returned encouraging results, including copper and gold mineralisation associated with magnetite-rich breccias, with intersections such as 7.62m @ 0.90% Cu and 0.62 g/t Au, and multiple surface samples exceeding 1,000 ppm Cu, correlating strongly with magnetite-bearing zones identifiable in geophysical data.

Recent work has integrated high-resolution magnetic and gravity data with 3D geological modelling, defining a large coincident magnetic and gravity anomaly commencing from approximately 70m below surface. This anomaly is interpreted to represent magnetite-rich alteration and brecciation typical of IOCG systems, and remains untested by historic drilling. In addition, six further magnetic–gravity anomalies have been identified across the project area, highlighting the broader scale potential for multiple discoveries.

Tarrina is advancing Walparuta through systematic geological studies, geophysics and targeted drilling, with the objective of testing these large-scale IOCG targets and unlocking the project’s potential as a significant copper-gold system.