Patagonia Lithium (ASX:PL3) spuds Cilon Well 8 as funded drill path begins

A 600m target hole and lodged EIA paperwork shift the story from balance sheet to ground

Patagonia Lithium (ASX:PL3) has spudded Well 8 at its Cilon concession in Argentina’s Jujuy province, with 38 metres drilled, steel casing set and the first packer assay test lined up at 70 metres depth. The target depth is 600 metres. The rig is moving at roughly 25 metres per day.

For a company that only cleared its funding gap in June with an A$11.4 million placement, this is the first hard evidence that the raise is being converted into drill metres. Well 8 was the specific catalyst investors were promised when they wrote the cheque at A$0.10.

The other piece of today’s update matters just as much. Patagonia has lodged its formal response to the Jujuy Mining Secretariat on the Environmental Impact Assessment for the demonstration plant, and secured a positive ruling from the Secretariat of Indigenous Peoples on community surface rights. Both drill programme and permit process are now running in parallel.

Why Well 8 is the hole that has to upgrade the MRE

The current Mineral Resource Estimate sits at 551,400 tonnes of lithium carbonate equivalent at 294 mg/L, upgraded back in July 2025. Well 7 delivered the porosity and flow numbers that made an expansion of the MRE domain look sensible. Well 8 is the hole that has to actually deliver the tonnes.

The early core description is encouraging in a low-key way. From 30 to 38 metres, the team is logging well-sorted fine sands, roughly 90% rounded quartz, with high visual porosity. Executive Chairman Phillip Thomas noted porosity is looking good so far.

For brine projects, porosity and flow are the whole game. High-grade lithium in tight rock is a lab result, not a project. What the next 560 metres of core needs to show is that the sponge-and-lid geology found at Well 7 continues at depth.

The permit lodgement is the quiet story that unlocks the demo plant

The June raise earmarked capital for scoping a 1,000 tonne per year lithium carbonate demonstration plant. That is not a commercial-scale facility. It is the step required before anyone will underwrite project finance for the real build.

Today’s EIA response, combined with the positive Indigenous Peoples ruling and the successful Olaroz community meeting, moves the permit ball forward. The next gate is the UGAMP community and government meeting for construction signoff. Investors should treat that as the next hard catalyst rather than a routine notice.

We think this permit workstream is currently underappreciated. The stock is priced as a drill result story, but a granted demo plant permit would materially reduce the perceived timeline risk on the whole project.

What the drilling pace tells us about cash runway

At 25 metres per day, Well 8 is a roughly 24-day proposition to reach target depth, before packer testing time is added. Each packer test is budgeted at eight hours. This well should deliver its full data set inside the next two to three months.

That timing is important. The A$11.4 million raise has to fund Well 8, the MRE upgrade, a scoping study and the demo plant planning. A rig running efficiently in Argentine winter conditions is the difference between one hole and a stretched budget.

The skeptical read is that Argentine brine projects rarely stick to timelines, and minus 17 degree site visits are a reminder the operating environment is genuinely hard. The constructive read is that the team has now drilled seven wells in this basin.

The Investors Takeaway for Patagonia Lithium

Patagonia is now doing exactly what shareholders paid for in June. The rig is turning, the permit paperwork is lodged, and the community engagement is documented. None of that is a re-rating catalyst on its own. All of it is the necessary work.

The two things worth watching from here are the first packer assay at 70 metres, expected in the next few weeks, and the UGAMP signoff on the demo plant. A strong porosity and flow read from Well 8, paired with a granted construction permit, would put the market in a position where an updated MRE and scoping study land into a very different narrative.

Investors can read our prior coverage of the funding structure and the Well 7 brine results at stocksdownunder. The A$0.16 option strike from the June raise still sits as the level the stock needs to clear for the next tranche of capital to arrive without further dilution.