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    Argentina Lithium’s $100M Rincon West deal: DLE and plant design notes for engineers

    April 22, 2026|

    Reviewed by Tom Sullivan

    Argentina Lithium’s $100M Rincon West deal: DLE and plant design notes for engineers

    First reported on MINING.com

    30 Second Briefing

    Argentina Lithium & Energy has secured a US$100 million staged funding package from Xi’an Lanshen New Material Technology to advance the Rincon West brine project in Salta, centred on pilot-scale direct lithium extraction and engineering for a 5,000 t/y battery-grade lithium carbonate plant. The greenfield project currently hosts 238,000 tonnes LCE (measured and indicated) at an average 296 mg/L lithium, with progression to full plant construction contingent on an NI 43‑101 reserve, EIA approval, baseline studies and permits. Lanshen will supply integrated EPC, DLE systems and commissioning in exchange for up to 30% of ALESA, alongside Stellantis’ existing 19.9% stake and offtake rights.

    Technical Brief

    • Framework agreement structures Lanshen’s US$100 million into three sequential development stages at Rincon West.
    • Stage 1 funds pilot-scale DLE operations specifically to generate data for a pre-feasibility study.
    • Stage 2 financing targets engineering design and permitting work required to support a definitive feasibility study.
    • Lanshen’s Stage 3 contribution is approximately US$95.9 million, covering engineering, procurement, supply, and commissioning support.
    • ALESA must first secure NI 43‑101 reserves, EIA approval, baseline/site studies, permits, and project financing before Stage 3.
    • Stellantis’ 19.9% ALESA interest and long-term offtake require third‑party consents before Lanshen’s equity earn‑in proceeds.
    • Equity structure post‑deal allows Lanshen to earn up to 30% of ALESA, conditional on staged deliverables.

    Our Take

    With Argentina Lithium’s market cap at about US$12 million versus a planned ~US$95.9 million Stage 3 contribution from Xi’an Lanshen, this structure effectively outsources capex risk to the partner while leaving existing shareholders highly leveraged to any resource or price upside at Rincon West.

    The Rincon West brine grade of 296 mg/L is at the lower end of salars covered in our lithium database, which typically pushes operators towards either larger brine volumes, tighter operating cost control, or process-intensification technologies to maintain competitive unit costs.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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