Terra Metals (ASX:TM1) has confirmed continuity of platinum group metal (PGM)-copper-nickel sulphide mineralisation across a 650m gap at its Southwest discovery in Western Australia, with three reverse circulation (RC) pre-collar holes returning broad intercepts.
SWRD057 returned 194m @ 0.71 grams per tonne platinum, palladium, and gold (PGE3) and 0.11% nickel (Ni) from 58m, including higher-grade zones of 34m @ 1.32g/t PGE3 from 58m and 11m @ 2.62g/t PGE3 from 168m.
SWRC053 returned 105m @ 0.87g/t PGE3 from 183m, including 22m @ 1.67g/t PGE3. SWRD052 delivered 76m @ 0.87g/t PGE3 and 0.16% Ni from 170m, including 15m at 1.57g/t PGE3 from 231m.
All three holes ended in mineralisation, with diamond tails completed to depths of up to 918m, awaiting assay results.
“Every RC pre-collar reported […] intersected broad intervals of PGM-Cu-Ni sulphide mineralisation and ended in mineralisation, providing further confidence that we have identified a significant new mineralised system outside the existing Dante mineral resource estimate (MRE),” CEO Thomas Line says.
Southwest represents a different style of mineralisation compared to the stratiform copper-PGM-titanium magnetite reefs in the existing Dante MRE.
The new system comprises intrusion-hosted nickel-copper-PGM-cobalt sulphide mineralisation within mafic-ultramafic units of the Jameson intrusion.
Drilling has targeted an ultramafic package of approximately 150m to more than 500m thick. The company has defined mineralisation over more than 950m of strike, approximately 650m of width, and at least 750m of down-dip extent, with mineralisation remaining open in all directions.
Multiple diamond rigs continue extensional and infill drilling while ground and downhole electromagnetic surveys generate additional targets.
Heritage surveys scheduled for next month are expected to expand drill access ahead of grid-spaced resource drilling, with a maiden MRE for Southwest targeted for late 2026.
Terra Metals is advancing the Dante Project in Western Australia’s West Musgrave region, where it has defined a 148-million-tonne MRE containing PGE3, gold, copper, titanium, and vanadium across multiple deposits.
Write to JC Villarba at Mining.com.au
Images: Terra Metals
