St George Mining Limited (ASX: SGQ) has received further encouraging results from lithium exploration activities at its Mt Alexander Project in the Yilgarn Craton in Western Australia.
“Assay results received to date continue to demonstrate the presence of mineralized pegmatites that commence from or near surface and continue to depths of up to 300m below surface,” John Prineas, St George Mining’s Executive Chairman, said.
“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 mineralization along the prospective LCT corridor that is situated within St George’s tenure. A follow-up drill programme 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 (ASX: DLI) progressing development activities for its lithium resource and the Mt Bevan Project immediately adjacent to Jailbreak being explored under joint venture by Hancock Prospecting Pty Ltd, Hawthorn Resources (ASX: HAW) and the Indian Government backed Legacy Iron Ore (ASX: LCY).
“We look forward to providing a further update once final assay results are received.”
Assay results indicate LCT fertility continues along the ultramafic host:
Since commencement of drilling on 21 February 2023, St George Mining has completed 84 Reverse- Circulation (RC) drill holes for 10,020m and 4 diamond drill holes for 877.30m. In total, 74 drill holes were completed on exploration license E29/962 (100% St George) and 14 drill holes on E29/638 (75% St George: 25% IGO).
Assay results have been received to date for 72 RC holes. No assay results have been received for the diamond drill holes completed so far 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 as well as to test mineralized pegmatite outcrops identified from surface sampling.
Pending assay results include those for diamond core samples from the wide pegmatite intersections in drill hole MAD213 at the Manta Prospect.
In total, 11 of the RC holes where assays have been received intersected highly anomalous Li2O results at Jailbreak – many coincident with anomalous caesium, rubidium and locally tantalum and tin results. These results indicate the host pegmatites appear to be part of a fractionated pegmatite system with potential for stronger mineralization along strike and down dip from current drilling.
Drill results have also provided an increased understanding as to the controls on mineralization and indicate that the priority target horizon is a north-south trending ultramafic sequence where the highest lithium values have been observed.
Focus of the follow-up activity will likely be toward the southern extension of this sequence which remains relatively underexplored including mapped pegmatites that have yet to be tested by drilling.
As part of the recent programme, the deepest diamond hole drilled to date at Jailbreak (MARD247) was drilled down dip from previous mineralized intersections at Jailbreak and intersected two pegmatites with downhole widths up to 7.1m.
Assay results and petrographic analyses are pending for samples from MARD247 to determine if these two pegmatites contain lithium. Assays are expected in approximately four weeks.
The recent assay results and geological data are being interpreted to develop a three-dimensional model of the known mineralization to assist in follow-up drilling.
For further information please visit: https://stgm.com.au/
