Simberi drilling uncovers further sulphides and gold

St Barbara has identified additional sulphide and gold mineralisation at its Simberi operations in Papua New Guinea (PNG).

This has occurred on both the Samat and Sorowar – Pigiput Trend deposits, with the first holes from a diamond drilling campaign targeting Samat delineating high-grade sulphide mineralisation.

The deposit has received only sparse historical drilling for sulphides, and gold mineralisation, with grades of up to 6.4 grams per tonne (g/t), is occurring immediately below the current Samat sulphide open pit ore reserve, the company advised.

Further high-grade gold mineralisation was also intersected in a diamond drilling campaign at the Sorowar – Pigiput Trend deposit. This included one sample grading 45.9 grams per tonne of gold across 3m.

St Barbara has now completed its 2025 resource definition, exploration and sterilisation drill program at Simberi.

Assay results remain pending for 20 diamond drill holes, including from Samat, two from Pigibo North, two from Pigicow-Botlu, three from Pigiput Northeast Trend, and two from Pigibo-Botlu.

“The identification of additional sulphide mineralisation extending or located immediately below the current sulphide open pit ore reserve at Samat and Sorowar – Pigiput Trend is very positive news,” St Barbara managing director and chief executive officer Andrew Strelein said.

“We are looking forward to the results of the remaining 10 Samat drill holes to better understand the potential to define additional high-grade sulphide resources where historic diamond drilling is relatively sparse.

“During the September quarter we anticipate the return of assay results for most of the remaining 20 resource definition, exploration and sterilisation holes drilled to date.”