Great Southern Copper PLC (LON: GSCU) has confirmed the presence of high-grade mineralisation beneath the historic Mostaza mine at its Cerro Negro project in Chile.
The company on Tuesday released final results from pole-dipole IP and audio magneto-telluric (AMT) geophysical surveys, which revealed a strong correlation with known copper-silver mineralisation at the Mostaza mine. The data also outlined multiple untested drill targets along a 2.5km mineralised trend extending south of the mine.
Highlights:
· Coincident PDIP chargeability and resistivity anomalies at Mostaza mine (Line 1) correlate strongly with high-grade Cu-Ag mineralisation identified at depth in previous drilling
· Results confirm structural complexity of the Mostaza deposit
· Anomalies on Lines 2-5 are consistent with earlier reported gradient array IP anomalies1 and geochemistry results2 defining a 2.5km mineralised trend south of the Mostaza mine
· 2D inversion modelling of AMT results identifies targeted north-south structural trend
· Geophysical results identify priority untested targets for Phase III drilling over 2.5km trend
· Planning for Phase III exploration drilling advanced with expected start date late August
· GSC holds option to own 100% of the Cerro Negro prospect, including the Mostaza mine
· Prospect located at low elevation with excellent access to infrastructure and mining services
“These exciting pole-dipole IP results clearly identify the high-grade sulphide mineralisation and provide compelling targeting vectors for our upcoming drilling campaign designed to explore extensions of the mineralised system along the Mostaza Fault trend,” said chief executive Sam Garrett.
He added that the findings highlight the post-depositional structural complexity of the deposit, underscoring the value of geophysics in guiding future drilling and enhancing geological understanding.
Garrett noted: “These results significantly enhance the project’s potential and represent a compelling opportunity for discovery in our Phase III programme, which we aim to commence before the end of August, subject to rig availability.”
