St George Mining has intersected nickel-copper sulphides in the second drillhole targeting an extension to the high-grade Stricklands deposit at its Mt Alexander project in WA.
A small amount of nickel-copper sulphides were located from 102.7 metres to 106.3m downhole including 0.25m of massive sulphides abutting the granite contact from 106.05-106.3m.
Drilling has confirmed a western extension of approximately 35m to the existing high-grade Stricklands deposit, with mineralisation still open down dip.
St George plans further extension drilling at all four of its Cathedrals Belt shallow high-grade nickel-copper-PGE deposits at Mt Alexander: Stricklands, Cathedrals, Investigators and Radar. The company is focused on increasing the volume of known mineralisation as input to a possible mineral resource estimate.
The second drill hole in the current program that intersected the small amount of massive sulphides was designed to test a strong EM conductor of 22,500 Siemens.
St George says that hole appears to have intersected the same structure that a prior hole intersected in an up-dip position.
The company previously reported 5.2m of nickel-copper sulphides from 112.9m downhole including 5m with 15 to 20 per cent sulphides and 0.2m of massive or 100 per cent sulphides in the first hole of the infill and extensional drilling program.
This hole targeted a downhole EM conductor of 9825 Siemens. The core showed sulphides included pentlandite, chalcopyrite and pyrrhotite. Portable XRF analysis confirmed nickel-copper-cobalt values similar to the Stricklands deposit
Laboratory assays expected to confirm the nickel, copper, cobalt and platinum group element grades in the mineralised zones for both holes are expected in 6 to 8 weeks.
St George said the drill hole orientation means the mineralised intersection in both holes will represent approximately the true width of the mineralised section.
The Stricklands deposit is demonstrating the potential to grow, with mineralisation remaining open to the west, north and north-west according to the company.
St George said mineral distribution in both holes showed interstitial fine-medium grained sulphides grading downhole to massive sulphide content. The company concluded this represents “a primary mineralisation genesis that is not considered to be re-mobilised post emplacement”.
St George recently identified five new conceptual targets after completing a detailed review of the Mt Alexander project.
The company said the nickel-copper-PGE targets have favourable “structural and geological settings” warranting prioritised follow-up exploration. Drilling is planned for the June and September quarters.
St George is pushing hard with its drilling program in 2022 in an endeavour to put itself in the position to generate a maiden mineral resource estimate for the Mt Alexander nick-copper-PGE project.
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