Southern Cross antimony at Sunday Creek: key drilling insights for mine planners
Reviewed by Joe Ashwell

First reported on MINING.com
30 Second Briefing
Drilling at Southern Cross Gold’s Sunday Creek project in Victoria has delivered its strongest Apollo target intercept, with hole SDDSC200 cutting 17.3 metres from 251.1 metres depth grading 15.3 g/t gold and 3.2% stibnite, including 6.3 metres at 32.3 g/t gold and 7% stibnite. Additional holes SDDSC195 and SDDSC199 intersected up to eight epizonal vein sets, with best intervals of 10.3 metres at 7.9 g/t gold and 0.4% stibnite from 137 metres and 17.9 metres at 5 g/t gold and 1.4% stibnite from 210.4 metres. The 200,000‑metre programme, with nine rigs active and 46 holes pending, targets one of Australia’s few high‑grade antimony systems amid a multi‑year global supply deficit and prices near US$50/kg.
Technical Brief
- SDDSC200 lies in a previously undrilled portion of Apollo, extending high‑grade mineralisation laterally.
- Multiple intervals in SDDSC200 exceeded 20% antimony, indicating strong epizonal enrichment in upper system levels.
- Sunday Creek sits ~60 km north of Melbourne and ~55 km southeast of Alkane’s Costerfield antimony mine.
- Southern Cross Gold’s market capitalisation reached C$2.47 billion after the Apollo intercept announcement.
- Antimony prices in North America are ~US$50/kg after a fourfold spike following China’s 2024 export controls.
Our Take
With antimony prices in North America at about US$50/kg after a fourfold spike linked to China’s 2024 export controls, a high‑grade antimony component at Sunday Creek in Victoria positions Southern Cross Gold alongside projects like Perpetua Resources’ Stibnite in Idaho as part of the small non‑Chinese pipeline our database tracks for this critical metal.
Southern Cross Gold’s roughly C$2.47‑billion market capitalisation and 8% share price move on the latest Sunday Creek results stand out against most TSX/TSXV gold names in our coverage, where similar re‑ratings have typically required either a maiden resource or a clear development timetable rather than pure exploration drilling.
Running nine drill rigs with 247 holes completed and 46 assays pending at Sunday Creek suggests Southern Cross is pursuing a resource‑definition scale campaign more akin to advanced gold projects in our 1094 Mining stories than to early‑stage critical minerals plays, which may accelerate any future scoping work on combined gold–antimony development options.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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