Charger Metals Extends Medcalf Lithium Mineralisation with Deep Drilling

Depth Extensions Confirmed at Medcalf

Charger Metals NL (ASX:CHR) has delivered a fresh boost to its Lake Johnston Lithium and Gold Project with new drilling results from the Medcalf Spodumene Deposit that extend lithium mineralisation significantly deeper and wider. The March quarter program, comprising 3,418 metres of combined diamond and reverse circulation (RC) drilling, has pushed spodumene-bearing pegmatite lodes down dip to 600-700 metres, well beyond the boundaries of the maiden resource.

The standout hole CLMDD004 yielded combined spodumene widths of 26 metres averaging 1.11% lithium oxide (Li2O) and 113ppm tantalum (Ta), extending the mineralisation by 260 metres from previous intercepts. Meanwhile, hole CLMRC066 confirmed 22 metres at 1.0% Li2O and 111ppm Ta, affirming that the Medcalf resource remains open along strike to the south-east. These results underscore the deposit’s potential to grow substantially beyond the initial 8.2 million tonnes at 1.0% Li2O resource estimate.

Medcalf West Shows Promising High-Grade Zones

Adding to the momentum, RC drilling at the adjacent Medcalf West Prospect has intercepted high-grade spodumene mineralisation outside the current resource footprint. Notable intersections include 10 metres at 1.21% Li2O and 68ppm Ta from 128 metres depth, and 4 metres at 1.11% Li2O and 100ppm Ta. These pegmatite swarms occur within a 35-metre thick mineralised zone stretching over 1,200 metres of strike, suggesting a robust and continuous lithium system.

Charger’s Managing Director Bryan Dixon highlighted the encouraging widths and grades, noting that the deposit’s geometry, with stacked spodumene pegmatite veins dipping at 45 degrees from surface, makes it highly amenable to open pit mining. This structural setting, combined with proximity to established spodumene processing plants and infrastructure about 200 kilometres away at Esperance Port, enhances the project’s development appeal.

Resource Upgrade Anticipated as Assays Finalise

The company has completed 75 drill holes across Medcalf and Medcalf West, with assays still pending for some samples expected within the next month. Upon receipt, Charger plans to revise the maiden Medcalf Lithium Resource, which is widely expected to increase materially given the extended mineralisation footprint and consistent grades.

These developments build on Charger’s recent progress, including the expanded maiden resource announced in late March, which already incorporated promising high-grade gold intercepts at the nearby Xmas prospect. The ongoing drilling success at Medcalf aligns with the company’s strategy to leverage the Yilgarn region’s rich lithium endowment, situated near major projects like the Earl Grey (Mt Holland) Lithium Project operated by Covalent Lithium.

Charger’s exploration consultant Francois Scholtz confirmed that the sampling and assay protocols meet industry standards, with rigorous quality control measures ensuring reliable data. The company also maintains strong community engagement through a Heritage Protection Agreement with the Ngadju people, reflecting responsible stewardship of the land during exploration.

Given the current drill spacing and geological continuity, the updated resource estimate will provide a firmer basis for subsequent feasibility and mining studies. The market will be watching how these results translate into commercial viability amid fluctuating lithium prices and competitive pressures from other emerging Australian lithium projects.

This latest tranche of results also complements the company’s broader portfolio, including the Bynoe Lithium Project in the Northern Territory, which lies adjacent to Core Lithium’s Finniss Project, itself recently upgraded with a 58% increase in mineral resources. Together, these assets position Charger Metals as a notable player in the domestic lithium exploration sector.

For investors tracking the company’s trajectory, the forthcoming resource revision will be a critical catalyst, potentially reshaping valuation expectations and strategic options ahead.

These findings are consistent with the positive drilling trends reported earlier in March, where Charger Metals extended high-grade spodumene mineralisation to vertical depths of at least 215 metres at Medcalf West, reinforcing the resource growth narrative extended high-grade lithium mineralisation.