Catalina Resources (ASX:CTN) advances Breakaway Dam VMS understanding as drilling nears completion

Catalina Resources has moved closer to defining the scale and geometry of its Breakaway Dam Copper Project in Western Australia, with its latest drilling program nearing completion and early observations aligning with geophysical targeting.

Located approximately 17km east of Menzies, the program represents a targeted step forward in advancing understanding of a system already interpreted as a copper-rich volcanogenic massive sulphide system.

Highlights

• Approximately 1,600m of drilling completed, with program nearing completion
• Breakaway Dam confirmed as a copper-rich VMS system, with prior drilling delivering copper intersections approaching ~2% Cu over meaningful widths
• Drilling successfully intersected modelled DHEM conductor targets
• Multiple zones of sulphide mineralisation observed across several drill holes
• Assays prioritised following field observations and intersection of priority conductor plates
• DHEM surveys to commence, with DeepVision Geophysics mobilising to site
• Planning underway for next phase of drilling pending receipt of assays

The current campaign builds on prior drilling that established a consistent geological setting, with sulphide mineralisation intersected in all holes within fine-grained metasedimentary units overlying a porphyritic basalt sequence.

This setting, together with the observed sulphide assemblage and associated geophysical responses, is consistent with the interpretation of Breakaway Dam as a copper-rich VMS system.

Previous drilling has returned multiple copper intersections across the central zone, including individual intervals approaching ~2% Cu, with mineralisation occurring over true widths of up to approximately 8–9 metres.

This phase of drilling was designed as a focused follow-up to earlier work, targeting conductor thickness and continuity within priority DHEM targets.

Drill holes were planned to directly test modelled conductor plates derived from previous surveys, while also assessing the potential for thicker sulphide accumulations within plate cores and refining geological and geophysical models ahead of further drilling.

To date, approximately 1,600 metres has been drilled, with completion expected within the coming days.

Drilling has successfully intersected priority conductor targets, validating the company’s geophysical modelling and targeting methodology, while also testing a geochemical target south of the main mineralised corridor to evaluate broader strike potential.

Field logging has identified multiple zones of sulphide mineralisation across several drill holes, with sulphides distributed over meaningful downhole intervals and locally increasing in intensity within discrete zones.

The variability in sulphide intensity is consistent with drilling intersecting different parts of a broader sulphide system rather than isolated occurrences, supporting the interpretation of system continuity.

Catalina’s Executive Director Ross Cotton said,

“This program has been designed to test the most compelling targets identified at Breakaway Dam, and it is extremely encouraging see sulphide mineralisation intersected in line with our modelling.”

With drilling nearing completion, the next phase will involve downhole electromagnetic surveys to further refine the geometry of the system.

DeepVision Geophysics is scheduled to mobilise to site on 27 March 2026, with surveys aimed at identifying off-hole conductive responses, refining the position, size and orientation of sulphide bodies, and generating new high priority drill targets.

Planning for the next phase of drilling is already underway and will be refined following receipt of assay results and DHEM survey data, with the integration of drilling and geophysical data expected to provide a clearer picture of the scale and continuity of the system and guide ongoing exploration at Breakaway Dam.