Liontown Resources Ltd (ASX: LTR) has announced a positive update from its ongoing resource expansion drilling at Kathleen Valley Lithium-Tantalum Project in WA.
The company reported that the drilling continues to intersect thick zones of high-grade, mineralised pegmatite and extend the mineralisation to the north-west well beyond the current Resource boundary.
New intersections include 18m @ 1.6% Li2O from 189m, 48m @ 1.5% Li2O from 277m, and 48m @ 1.4% Li2O from 242m.
LTR said that the thicker intersections are interpreted to be a merged zone resulting from the coalescing of the Kathleen Valley and Mt Mann pegmatite swarms. This zone has been confirmed by assays over a minimum strike length of 200m.
LTR noted that the latest data supports Liontown’s increased Exploration Target of 19 – 31Mt @ 1.2 – 1.5% Li2O.
The company said that the current drill program is expected to take another 1-2 weeks to complete. The results from it are expected to be used to prepare an upgraded MRE for use in future feasibility studies.
Kathleen Valley Lithium Project
Liontown’s 100%-owned Kathleen Valley Project is a high-grade lithium deposit located approximately 680km north-east of Perth, Western Australia. It has a Maiden Mineral Resource of ~21.2Mt @ 1.4% Li2O (lithium) and 170ppm Ta2O5 (tantalum). It may be noted that 75% of the Mineral Resource is Measured or Indicated.
Till date, the total amount of drilling completed by Liontown at Kathleen Valley amounts to 280 holes for 41,379m, comprising 238 RC holes for 36,817m and 42 diamond core holes for 4,562m.
LTR said that the current drill program is designed to increase both the size of, and confidence in, the existing MRE by drilling immediately along strike, down-dip and between previous intersections.
The company said that the latest assays combined with geological logging indicate that the shallow-dipping Kathleen’s Corner pegmatites are merging with the Mt Mann pegmatites at depth to form a thick (>30m), moderately dipping (~400) pegmatite body.
This zone extends over a strike length of at least 600m and remains open to the north-west and at depth.
New intersections include:
- 18m @ 1.6% Li2O from 189m including 12m @ 2.2% Li2O from 190m;
- 48m @ 1.4% Li2O from 242m including 8m @ 2.3% Li2O from 218m and 4m @ 2.2% Li2O from 272m;
- 21m @ 1.5% Li2O from 190m including 3m @ 2.3% Li2O from 202m;
- 25m @ 1.5% Li2O from 224m including 6m @ 2.0% Li2O from 232m; and
- 48m @ 1.5% Li2O from 277m including 22m @ 2.1% Li2O from 289m.
It may be noted that all results listed above are located outside of the conceptual open pit, which is based on the maiden Mineral Resource Estimate and subsequent Scoping Study.
The company said that the results for two holes confirm the north western strike continuity of the recently reported and best-ever intercept of 52m @ 1.4% Li2O.
Liontown noted that the latest data supports its previously announced increased Exploration Target of 19 – 31Mt @ 1.2 – 1.5% Li2O. This target is in addition to the maiden MRE and if successfully converted to JORC compliant Mineral Resources, could substantially extend the potential mine life.
The company also reported that visually similar zones, for which assays are pending, have been intersected in a number of additional holes for a further 400m along strike, with the mineralised trend remaining open to the north-west and at depth.
Liontown said that a further 2,600m of Reverse Circulation (RC) drilling is planned with three RC rigs now operating. The program expected to take 1-2 weeks to complete.
LTR reported that the results from the drill program, when completed, will be used to prepare an upgraded MRE for use in future feasibility studies. This includes comprehensive metallurgical test work that is ongoing at ALS’s Balcatta laboratory in Perth.