St George Mining has released the latest results from lithium exploration activities at its Mt Alexander Project in the Yilgarn Craton, Western Australia.
Assay results to date from the 2023 Reverse Circulation (RC) drilling program at the Jailbreak Lithium Prospect have returned further intersections of lithium, with peak values of 1.77 per cent Li₂O and 1.49 per cent Li₂O.
Numerous drill holes have intersected anomalous lithium, caesium, tantalum and tin values up to 16m thick.
Assays for an additional 851 samples from RC and diamond drill holes that intersected intervals of pegmatites at Jailbreak are still pending.
Jailbreak remains open at depth and along strike of current drilling, including to the south along the interpreted lithium-caesium-tantalum (LCT) corridor which extends towards the Mt Ida deposit of Delta Lithium.
Since commencement of drilling on 21 February 2023, St George Mining has completed 84 RC drill holes for 10,020m and four diamond drill holes for 877m. In total, 74 drill holes were completed on exploration licence E29/962 (100 per cent St George) and 14 drill holes on E29/638 (75 per cent St George, 25 per cent IGO).
Assay results have been received to date for 72 RC holes. No assay results have been received for the diamond drill holes completed in 2023. Assay results are pending for a total 851 samples from RC and diamond drill holes.
The majority of the recent drilling was designed to follow-up encouraging results from the initial 2022 drilling at Jailbreak in addition to testing mineralised pegmatite outcrops identified from surface sampling.
St George Mining Executive Chairman, John Prineas, said, “Assay results received to date continue to demonstrate the presence of mineralised pegmatites that commence from or near surface and continue to depths of up to 300m below surface. High grades have been observed, highlighting the potential of the pegmatite system that remains open at depth and along strike of the prospective horizon.
“The recent drilling has significantly increased the understanding of the distribution of pegmatites and lithium mineralisation along the prospective LCT corridor that is situated within St George’s tenure. A follow-up drill program will be planned once all drill results are received and interpreted with a focus likely to be the ultramafic sequence where the highest lithium values have been intersected so far.
“The Mt Ida province continues to evolve as a significant lithium region with Delta Lithium progressing development activities for its lithium resource and the Mt Bevan Project immediately adjacent to Jailbreak being explored under joint venture by Hancock Prospecting, Hawthorn Resources and the Indian Government-backed Legacy Iron Ore.
“We look forward to providing a further update once final assay results are received.”
Drilling at Mt Alexander has now paused pending a review of assay results to evaluate follow-up drill targets. Future drilling will continue to test modelled pegmatites in order to develop a better understanding of sub-surface structures and associated mineralisation.




