• Hydrogeological dynamic modelling indicates lithium brine can be pumped for up to 45 years at 12,000tpa lithium carbonate or 23 years at 24,000tpa
• Modelling suggests over 95% of the contained brine can ultimately be recovered
• Sensitivity analysis shows potential impact of third-party operations on Argosy's production targets

Argosy Minerals has updated its hydrogeological dynamic modelling for the Rincon Lithium Project following the recent upgrade to the JORC Code (2012) compliant Total Mineral Resource Estimate (MRE). The updated modelling, conducted by AQ2 Pty Ltd, considered various brine abstraction scenarios based on sustainable lithium brine pumping rates. The modelling results indicate that lithium brine can be pumped for an increased period of up to 45 years to operate at up to 12,000tpa of lithium carbonate, or up to 23 years to operate at up to 24,000tpa of lithium carbonate. This represents a significant increase in the project's mine-life and brine abstraction capacity. The simulations show that between 705,000 tonnes and 725,000 tonnes of lithium carbonate (over 95% of the contained brine) can ultimately be recovered as part of the total brine removed. The modelling also included a sensitivity assessment to determine the potential impact of third-party operations on Argosy's production targets, suggesting additional production bores and/or deeper production bores may be required to achieve the company's goals in the long term. However, with these modifications, the project can still achieve the same production/abstraction rates and duration.

The modelling indicates lithium brine can be pumped for up to 45 years to operate at up to 12,000tpa of lithium carbonate, or up to 23 years to operate at up to 24,000tpa of lithium carbonate.