Charger Metals

Assays up to 4.2% Li2O Confirm New Spodumene Pegmatites at Lake Johnston

Charger Metals NL (ASX: CHR, “Charger” or the “Company”) is pleased to announce that assay results from rock chip samples from a newly discovered pegmatite outcrop have confirmed high grade lithium up to 4.2% Li2O at the Lake Johnston Lithium Project, Western Australia.


  • Rock chip samples from a recently-identified pegmatite outcrop at the Lake Johnston Lithium Project have returned high-grade lithium assays up to 4.2% Li2O
  • The pegmatite outcrop contains visual spodumene crystals (visual estimates up to 40 – 50%)1 and extends northeast for 85m towards the Medcalf Spodumene Prospect
  • Two other spodumene-bearing pegmatite outcrops are located along the same trend with assays up to 2.2% Li2O and 2.5% Li2O, respectively2
  • Total distance of the new trend of spodumene-bearing pegmatite outcrops is over 1.2km, providing potential for scaleThe new trend is a priority lithium target that will be incorporated into the upcoming drill programmes at the Lake Johnston Lithium Project to be funded by Rio Tinto Exploration pursuant to the recently announced farm-in agreement3
Three samples were collected from across the outcrop, with all three returning high grade lithium results of 4.2%, 3.7%, and 3.5% Li2O. The outcrop was discovered during field mapping by Charger geologists and extends for 85m. Spodumene crystals are visible and are estimated to be up to 40- 50% of the total volume.1

The spodumene-bearing pegmatite outcrop strikes northeast towards the Medcalf Spodumene Prospect. Two other pegmatite outcrops have previously been mapped along this 1.2km trend, both of which have visual spodumene confirmed by high-grade rock chips of up to 2.5% Li2O and 2.2% Li2O, respectively (Figure 1).2

Charger’s Managing Director, Aidan Platel, commented:

“The discovery of this high-grade spodumene-bearing pegmatite outcrop is exciting and highlights the prospectivity of our Lake Johnston Lithium Project. The fact we have three pegmatite outcrops with visual spodumene and confirmed high grade lithium assays along a 1.2km trend suggests the potential for large-scale lithium mineralisation, in close proximity to our Medcalf Spodumene Prospect where earlier this year we drilled a swarm of high-grade spodumene bearing pegmatite veins over a strike of 700m.

This new trend of pegmatites is obviously a high priority target and will be incorporated into the upcoming drill programmes at Medcalf.”

Figure 1. Location and rock chip sample results from a 1.2km trend of spodumene-bearing pegmatites to the southwest of the Medcalf Spodumene Prospect.4

Photograph 1. Pegmatite outcrop containing spodumene crystals (rectangular pale grey; visually estimated at 40-50 vol%) in a strong shear foliation; assayed at 4.19% Li2O.

Permitting is continuing for planned drill programmes at the Lake Johnston Lithium Project. A Program of Works (PoW) has been approved for infill and extensional diamond drilling at the Medcalf Spodumene Prospect, which also includes the northeastern -most pegmatite of the new trend.

Aboriginal Heritage surveys are planned for December that will cover the rest of the new pegmatite trend as well as the Mt Gordon Prospect, as are targeted environmental surveys.


Click here for the full ASX Release

This article includes content from Charger Metals, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.

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