Catalina Resources (ASX:CTN) expands Breakaway Dam copper strike to ~1.2km with intercepts up to 2.17% Cu

Catalina Resources has reported results from its March 2026 reverse circulation drilling program at the Breakaway Dam Copper Project in Western Australia, with drilling expanding the strike extent of mineralisation and returning copper intercepts of up to 2.17% Cu.

The program, located approximately 17km east of Menzies, was designed to test modelled downhole electromagnetic conductor plates derived from previous drilling, while targeting a key stratigraphic horizon prospective for volcanogenic massive sulphide copper mineralisation.

Drilling intersected sulphide mineralisation associated with modelled electromagnetic conductors, with downhole electromagnetic surveying returning strong responses across all holes.

Highlights

• Strike extent expanded from ~700m to ~1.2km, with mineralisation open along strike.
• Copper intercepts include 1.9m @ 2.17% Cu, 2.9m @ 0.57% Cu and 3.8m @ 0.31% Cu.
• Mineralisation intersected across multiple positions and depths.
• Strong downhole electromagnetic responses recorded across all holes.
• Multiple on hole and off hole conductors defined through modelling.
• Priority targets identified for next phase drilling.

The program aimed to refine understanding of system continuity and geometry, assess the potential for thicker sulphide accumulations within conductor cores and support ongoing geological and geophysical modelling ahead of further drilling.

Historical drilling across the central zone returned copper intersections including 6m @ 1.19% Cu and 1.47m @ 1.97% Cu, with mineralisation defined within fine grained metasediments overlying a porphyritic basalt sequence.

Downhole electromagnetic data returned strong conductor responses in all holes, with modelling identifying both on hole and off hole conductive plates in positions and orientations consistent with discontinuous lenses of sulphide rich zones in the clastic rocks near the top of the underlying basalt unit.

Mineralisation and associated conductors have now been identified over a strike extent of approximately 1.2km, while historical drilling indicates mineralisation extends up to 1.8km, reinforcing the interpretation of a system scale volcanogenic massive sulphide environment and providing a strong basis for continued expansion.

Catalina Resources Executive Director Ross Cotton said:

“The emerging footprint at Breakaway Dam points to a broader system, with mineralisation and targets extending across a growing strike length. While continuity continues to be established, the results indicate we are working within a large and active system with clear potential to build scale.”

The company said future work will focus on testing priority conductor plates, expanding the system along strike and refining the geological and structural model to improve targeting confidence.

It said the results of the March 2026 drill campaign will form the basis for further systematic testing using downhole electromagnetic surveys along strike to the north and south.

The company also said additional drillholes will target larger electromagnetic conductor plates interpreted to represent more coherent zones of the original volcanogenic massive sulphide mineralisation.