RNS = WOWZA12 Jun 2025 07:42
EXCEPTIONAL
· Assay results received for holes CNG25-DD010 - DD014 with significant intervals including;
Ø DD013: 5m @ 3.04% Cu and 322.4 g/t Ag from 37m, within a broader zone of
§ 13.9m @ 1.74% Cu and 153.4 g/t Ag from 26.1m
Ø DD012: 3m @ 3.43% Cu and 164.7 g/t Ag from 24m, within a broader zone of
§ 20m @ 32.1g/t Ag from 7m (copper and silver leached in surface oxide zone)
Ø DD010: 19m @ 30.5g/t Ag from 6m, including
§ 8.8m @ 58g/t Ag from 10.2m (copper and silver leached in surface oxide zone)
· CNG25-DD012 confirms mineralisation up to 500m south of the Mostaza mine
· Exploration holes DD010, DD012 and DD014 intersected broad zones of anomalous silver in silicified leached rock near surface stongly indicative of the potential for high-grade sulphide Cu-Ag mineralisation at depth
· Phase III drilling is planned to target beneath the broad leached mineralisation zones
· Pole-dipole induced polarisation (PDIP), gradient, and audio frequency magneto-telluric (AMT) geophysical surveys are underway in advance of Phase III drilling
· Further assays pending on holes CNG25 DD015 - DD025
· GSC holds option to own 100% of the Cerro Negro project including the Mostaza mine
· Prospect located at low elevation with excellent access to infrastructure and mining services
Sam Garrett, Chief Executive Officer of Great Southern Copper, said:
"The exciting results at Mostaza continue with drilling below the historical Mostaza mine intersecting further outstanding high-grade Cu-Ag mineralisation that remains open along strike and at depth.
"In addition, our exploration drilling, designed to test for mineralisation beyond the historical pit, also intersected significant mineralisation over 500 metres south of the mine. Holes DD010, 012 and 014 have intersected broad zones of anomalous silver hosted in highly leached rocks near surface, which we believe represent the possible oxidised tops of sulphide-rich, high-grade Cu-Ag mineralised lens material at depth.
"Our very exciting drill results, together with the recently started geophysical surveys, preliminary petrography, and metallurgical test work, are setting the stage for an exciting Phase III drill programme.
"We look forward to sharing more exciting results as they become available."