Tarrina Resources Sharpens Walparuta IOCG Targets with New IP Survey

IP Survey Uncovers Multiple High-Priority Targets

Tarrina Resources (ASX:TR8) has delivered a significant boost to its Walparuta IOCG Project in South Australia with the completion of a 2D Pole-Dipole Induced Polarisation (IP) survey. The survey identified five strong, laterally continuous chargeability anomalies that coincide precisely with a 5-kilometre magnetic and gravity corridor, the hallmark of an iron oxide copper-gold system. These sulphide-related anomalies, detected from near surface to 350 metres depth, represent high-confidence drill targets that have never been tested.

Primary Untested Target Emerges as Key Focus

The standout result is the southernmost IP line, which crosses the largest magnetic-gravity anomaly located 200–400 metres southeast of the historic Walparuta Mine. This target exhibits chargeability values between 30 and 78 mV/V starting at just 70 metres depth; significantly stronger and larger than anomalies on the central line. Coupled with supporting copper-anomalous soils up to 290 ppm, the primary target is now the most compelling untested IOCG target at Walparuta.

Historic Drilling Validates Geophysical Model

Historic drilling, limited to the northern 1 kilometre of the 5-kilometre magnetic anomaly, aligns directly with one of the central IP chargeability highs. Drill holes WP01 to WP04 intersected consistent copper-gold mineralisation that plots on top of the IP anomaly, providing critical ground-truth for the geophysical interpretation. This correlation confirms that the IP method effectively detects copper and gold-bearing sulphide mineralisation at Walparuta, bolstering confidence in the untested targets elsewhere.

Integrated Geophysics Enhances Exploration Confidence

Walparuta’s exploration strategy leverages a “Coincident Anomaly” approach, combining magnetics, gravity, and IP data to pinpoint IOCG-style mineralisation. The 5-kilometre northeast-trending magnetic corridor maps the system’s footprint, while gravity data confirms a dense, iron-rich body at depth. The new IP survey completes the picture by detecting disseminated sulphides typical of IOCG deposits. This integrated dataset reduces exploration risk and sharpens drill targeting ahead of planned campaigns.

Next Steps: Mapping, Sampling and Drill Planning

Concurrent geological mapping and rock chip sampling are underway to refine the geological model and interpret geophysical data more precisely. Petrophysical analyses of rock samples will inform the optimisation of future drill targets, aiming to focus on higher-grade sulphide zones. Tarrina plans to extend IP and geochemical coverage to delineate the system’s full extent before initiating drill testing. This multi-pronged approach sets the stage for a potential breakthrough at Walparuta, a project that sits within the prolific Curnamona Province near significant copper-gold deposits like Kalkaroo and Mutooroo.

The Walparuta project’s new geophysical insights come as Tarrina advances its broader portfolio, including recent expansions at the Christmas Gift Gold Project in New South Wales, highlighting the company’s growing momentum in base and precious metals exploration.