QMines Delivers Additional High-Grade Copper-Zinc Intersections at Sulphide City

QMines Limited (ASX: QML) has reported further strong drilling results from the Sulphide City deposit within its 100%-owned Develin Creek copper-zinc project in Queensland.

The latest assays confirm thick, high-grade mineralisation consistent with historical intercepts and extend known zones beyond previous drilling.

A total of 32 holes have been completed for 6,643 metres, with assays pending for a further 15 holes.

Strong Intersections Extend Mineralisation

Standout results include 4m at 6.79% copper equivalent (CuEq) from 125m within 25m at 1.51% CuEq from 104m, with the broader interval demonstrating strong grade continuity.

Additional results of 7m at 2.71% CuEq from 59m within 44m at 1.41% CuEq from 59m, and 20m at 1.74% CuEq from 177m within 65m at 0.9% CuEq from 132m highlight the deposit’s capacity to deliver multiple high-grade zones in single holes.

Further intercepts such as 6m at 2.62% CuEq from 91m and 7m at 2.46% CuEq from 165m continue to extend mineralisation beyond the limits of previous drilling campaigns.

The company said metallurgical test work indicates it can recover and sell all metals included in the CuEq calculation—copper, zinc, gold, silver, and lead.

Management’s Development Vision

“These latest results from Sulphide City are exactly what we want to see — thick, continuous zones of high-grade copper and zinc, in line with historical intercepts,” executive chair Andrew Sparke said.

Mr Sparke said the intercepts reinforce the company’s strategy to blend Develin Creek feed with Mt Chalmers and Mt Mackenzie ore to support a 2 million tonne per annum copper-gold-zinc operation in Central Queensland.

He added that having multiple rigs in operation, strong grades across broad widths, and significant assays still pending positions Develin Creek as a cornerstone in QMines’ long-term production plan.

DD Targets High-Grade Zones

Qmines commenced a diamond drilling (DD) program in May to test deeper high-grade zones and refine the geometry of semi-massive and massive sulphide bodies.

The deposit hosts volcanogenic massive sulphide mineralisation, with geological characteristics indicating affinities to Besshi and Cyprus-style systems and evidence of complex zonation between copper and zinc.

By drilling diamond tails into key reverse circulation holes, the company aims to strengthen its geological model and improve confidence in resource expansion potential.

Qmines is conducting this work alongside ongoing infill and step-out drilling designed to extend strike length and depth extent.

Broader Project Workstreams

The company also has a pit optimisation study underway at the nearby Scorpion deposit following its recent resource upgrade, and expects results to inform initial mine planning.

Pre-feasibility level metallurgical test work will determine processing routes and evaluate the benefits of blending ore from multiple deposits.

A scoping study is assessing the integration of Mt Chalmers, Develin Creek and Mt Mackenzie into the proposed 2Mtpa operation to capture operational and cost efficiencies.

Qmines expects to release an updated pre-feasibility study incorporating these findings and expanded development plans during the first half of 2026.