O'Callaghans is a wholly owned polymetallic skarn deposit on M45/203 approximately 10 kilometres south of Telfer. Greatland declared a current 70 Mt JORC 2012 resource in March 2026. A prior owner completed a 2014 pre-feasibility study for underground long-hole open stoping, decline haulage and a 2 Mtpa sequential flotation, magnetic-separation, gravity and APT processing route, but no current economics are public.
- Country
- Australia
- Commodity
- W
- Stage
- Pre-Feasibility