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Pilbara Gold has launched deeper step-out drilling at its Mt York gold project in Western Australia, targeting resource growth beyond the existing 2.1-million-ounce mineral resource.
The new drilling campaign follows the completion of critical infill drilling for the project’s pre-feasibility study (PFS), with the latest results confirming further gold mineralisation across Main Hill, Breccia Hill and Main Hill Extension.
The company said it is now shifting its focus to testing deeper extensions beneath Main Hill and Main Hill Extension, where mineralisation is believed to continue below the current resource boundary.
At Main Hill, drilling returned 20m at 2.35 grams per tonne (g/t) gold from 393m, including 8m at 4.35g/t, alongside a deeper intersection of 23m at 1.38g/t from 419m, including 3m at 8.55g/t.
Another hole intersected 19m at 2.62g/t gold from 276m, including 8m at 5.51g/t, strengthening confidence in the continuity of higher-grade mineralisation.
Pilbara Gold managing director Peter Turner said the completed infill program had positioned the company to pursue further resource expansion.
“With the infill drilling for the PFS now complete, the rigs are moving to target big step-outs under Main Hill and Main Hill Extension where we believe the BIF and mineralisation continue well below the current resource,” Turner said.
“The Mt York gold resource is constrained by drilling and the next few months will test our belief that thick zones of mineralised BIF lie beneath Main Hill and Main Hill Extension in shallow-dipping shoots. Confirmation will positively impact the resource growth of the project.”
These results build on similar strong mineralisation the miner hit on October 14, with Pilbara Gold extending bedrock mineralisation at its Terra prospect inside Roe Hill, playing a strong hand into its ambitions to make it a second gold resource alongside Mt York.
Turning to the latest discoveries, Breccia Hill returned 30m at 1.48g/t gold from 252m, including 6m at 5.09g/t, while Main Hill Extension returned 9m at 3.59g/t from 94m, including 6m at 5.15g/t.
The intersections support the company’s efforts to upgrade inferred resources to the indicated category ahead of an updated mineral resource estimate and maiden ore reserve estimate.
Mt York hosts gold mineralisation along a continuous 4.2km banded iron formation (BIF), with the latest drilling supporting the potential for extensions beyond the existing resource model.
Pilbara Gold has also completed an airborne electromagnetic survey covering 280 square kilometres of BIF terrain south of Mt York, targeting potential new discoveries.
“Our airborne electromagnetic survey targeting buried mineralisation over 280km2 of BIF country to the south of Mt York is now complete,” Turner said.
“We await the processed data to begin anomaly characterisation, seeking similar signatures in the undrilled BIF in that region.”
Pilbara Gold expects final Mt York infill drilling results during the fourth quarter of 2026, with the PFS scheduled for completion in the first half of 2027.
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