Tarrina Resources' Phase 1 drilling at Christmas Gift reveals potential VMS-style zinc and copper mineralisation alongside high-grade gold, broadening the project's exploration scope.
- Discovery of VMS-style zinc and copper mineralisation
- High-grade gold intersections confirmed in diamond drilling
- Zinc grades up to 1.65% and copper up to 0.23% intersected
- Northern tenement identified as underexplored base metal target
- Plans for integrated geochemical, geophysical and drilling follow-up
New Base Metal Target Emerges at Christmas Gift
Tarrina Resources (ASX:TR8) has expanded the geological narrative at its Christmas Gift Gold Project in NSW with the identification of a previously unrecognised volcanogenic massive sulphide (VMS) style zinc and copper mineralisation system. This discovery comes from assay results of its Phase 1 diamond drilling program, which complement the already impressive high-grade gold mineralisation reported earlier this year.
The zinc and copper zones extend up to 30 metres wide, with grades peaking at 1.65% Zn and 0.23% Cu. These base metal intersections appear both spatially associated with and distinct from the orogenic gold mineralisation, suggesting a complex mineralising history. The host volcanic lithologies, including andesite and dacite tuffs, are typical of VMS deposits in the Lachlan Fold Belt, lending geological credibility to the new target type.
Gold Mineralisation Remains Robust and Extensible
The drilling reaffirmed the presence of high-grade orogenic gold lodes, with standout intersections such as 14.5 metres at 2.23 g/t Au and 0.5 metres grading a striking 42.26 g/t Au. These results underline significant potential for strike and depth extensions beneath and beyond the historic Christmas Gift mine workings. Only a handful of holes have probed deeper than 150 metres, leaving substantial vertical upside.
Chairman Francis De Souza highlighted the strategic value of the zinc and copper findings, noting the "additional string to our bow" and the exciting opportunity to discover a new VMS system in the northern, underexplored tenement where zinc and copper soil anomalies coincide with prospective geology.
Integrating Multi-Element Data for Target Refinement
Tarrina is leveraging a comprehensive multi-element geochemical database, including zinc, copper, lead, barium, silver, antimony, selenium, iron, and sulphur, to distinguish between structurally controlled gold-base metal lodes and stratabound VMS-style mineralisation. This integrated approach will inform the next phase of exploration, combining detailed core logging, 3D geological and structural modelling, and petrophysical surveys aimed at detecting conductive and chargeable bodies within the volcanic stratigraphy.
The company plans to field-validate soil anomalies and conduct a regional-scale air core drilling program targeting gold, copper, and zinc. Follow-up reverse circulation (RC) and diamond drilling will focus on infill and strike extensions along the 2.5-kilometre prospective corridor, including the western zone and northern extensions in EL9683.
Historical Data Supports New Interpretation
Historic drilling and soil sampling campaigns by previous explorers, including BHP and Freeport, identified zinc and copper anomalies but did not fully resolve their relationship to gold mineralisation. Recent re-logging and portable XRF analyses have confirmed the presence of semi-massive sulphides like sphalerite and chalcopyrite predating gold mineralisation, consistent with an exhalative VMS origin. This reinterpretation opens fresh exploration corridors that were previously overlooked.
The Christmas Gift project benefits from a well-documented geological framework, with the Jindalee Group basement overlain by Silurian-Devonian volcanic-sedimentary sequences and structurally complex fault zones that have controlled mineralisation emplacement. The company’s ongoing efforts to update geological models and compile a comprehensive rock library will underpin future resource estimation efforts.
Next Steps and Broader Portfolio Progress
Beyond Christmas Gift, Tarrina continues advancing its Walparuta project in South Australia, where recent soil sampling and induced polarization surveys have delineated compelling IOCG-style copper-gold targets. Results from these programs are expected by the end of September, potentially adding further value to the company’s diversified portfolio.
At Christmas Gift, the immediate focus will be on refining drill targets through integrated geochemical and geophysical analysis, followed by a substantial drilling campaign aimed at delineating a maiden JORC gold resource. The dual discovery of high-grade gold and VMS-style base metals positions Tarrina to unlock multiple value drivers in a historically productive yet underexplored region.
Bottom Line?
Tarrina’s unveiling of VMS-style zinc and copper mineralisation alongside high-grade gold at Christmas Gift broadens its exploration horizons, but the economic significance of the base metals remains to be proven through further drilling and modelling.
Questions in the middle?
- Will subsequent drilling confirm the extent and continuity of the VMS-style zinc and copper mineralisation?
- How will the integration of multi-element geochemistry and petrophysical data refine target prioritisation?
- What impact could the underexplored northern tenement have on the overall resource potential at Christmas Gift?