Southern Hemisphere Mining punches deeper into Chilean copper system
- Penny Taylor
- 2 hours ago
- 3 min read
Southern Hemisphere Mining (ASX: SUH) has punched deeper into its Llahuin copper-gold-molybdenum project near Illapel in Chile's Coquimbo Region, where a recent diamond drilling campaign has returned thick copper sulphide intercepts beneath earlier drilling. The latest results strengthen the company's case that Llahuin may host a large, vertically extensive copper porphyry system.
The 2251m program comprised nine diamond tails beneath earlier reverse-circulation holes, including six at Cerro in the north of the project and three at Ferro South in the south. The standout result came from Ferro South, with a 241m intercept grading 0.42 per cent copper equivalent from a shallow 18m, including a richer 143m interval grading 0.51 per cent copper equivalent from 36m.
At the Cerro prospect, other significant results include 154m grading 0.66 per cent copper equivalent from surface and 156m at 0.43 per cent copper equivalent from 2m, including 106m at 0.51 per cent copper equivalent.
The company says the results demonstrate strong continuity beneath earlier drilling and indicate the project is vectoring towards a more strongly mineralised part of the porphyry system.
At Ferro South, Southern Hemisphere believes the latest drilling has identified a new porphyry centre and is now targeting a feeder zone that could host higher-grade mineralisation. If confirmed, the new centre would add another hub within the broader Llahuin district. The Cerro results also sit well above the project's average resource grade, suggesting the next resource upgrade could deliver improvements in both size and grade.
On the back of the deeper drilling results, management says mineralisation remains open at depth, supporting its view that the Cerro-Ferro trend hosts a substantial copper porphyry system with significant expansion potential. Llahuin already hosts a JORC-compliant resource of 218.2 million tonnes grading 0.38 per cent copper equivalent and the latest drilling continues to support a previously reported exploration target of 260 million to 340 million tonnes across the Cerro-Ferro trend according to the company.
The next phase of continued deeper drilling and resource expansion is underway as some of the larger copper operators start to recognise the serious growth options that Llahuin Copper represents. Southern Hemisphere Mining Chairman Mark Stowell
Following completion of the program, the company plans to upgrade the Llahuin resource once the remaining assays are received and further deep drilling at Ferro South will test the interpreted feeder zone beneath the newly recognised porphyry centre.
The objective is to turn what management describes as "a large resource growing towards mine scale" into a genuine copper development story. The strategy is to expand both the size and quality of the resource through deeper drilling, while gold and molybdenum by-product credits could improve the economics of a future bulk-tonnage operation.
Southern Hemisphere is pursuing a two-speed growth strategy by systematically expanding its 100 per cent-owned resource while maintaining exposure to a potential deeper porphyry discovery through a partner-funded joint venture across its southern ground.
Llahuin is best viewed as a mineralised district rather than a single deposit, with its existing resource spanning the Central, Cerro and Ferro deposits across about 3kms to 4kms of strike. The broader mineralised system extends about 6kms when the Southern Porphyry ground is included and contains additional undrilled targets. Sitting in one of the world's premier copper jurisdictions, the project benefits from a mature mining services industry, skilled workforce and established infrastructure. It also lies just 8km from the El Espino copper-gold project, reinforcing the district's fertility.
Porphyry deposits are the workhorses of the global copper industry because they contain enormous volumes of mineralised rock capable of supporting bulk-tonnage mining operations. Individual grades may rarely grab the headlines, however, the sheer size of porphyry deposits is such that they are able to supply much of the world's copper, feeding everything from electricity networks and renewable energy infrastructure to electric vehicles, data centres and artificial intelligence.
Large porphyry discoveries are increasingly prized as the world searches for the next generation of long-life copper mines to support the burgeoning data centre industry. Against that backdrop, management believes the company's tightly held register, strong institutional backing and market valuation do not yet reflect the scale of the resource, the quality of the jurisdiction or the latest drilling success.
With every deep hole adding another piece to the puzzle, Southern Hemisphere appears to be building the case for a much larger copper system beneath Llahuin. It could have a tiger by the tail and now all eyes will be on the pending resource upgrade to see just how much bigger this Chilean copper story can get.
Is your ASX-listed company doing something interesting? Contact: office@bullsnbears.com.au
