Argentina : Argentina Lithium & Energy announces Initial Mineral Resource estimate at the Rincon West Lithium Project
On 22 October 2025, Argentina Lithium & Energy Corp. announced the results of the first Mineral Resource estimate (“MRE”) for the Rincon West lithium brine project in Salta Province, Argentina .
MRE Highlights (see Tables 1 and 2 for details):
- Measured and Indicated Resources of 0.15 km3 brine volume with an average grade of 296 mg/lithium, representing 238,000 tonnes Lithium Carbonate Equivalent (LCE), and
- Inferred Resource of 0.08 km3 brine volume with an average grade of 216 mg/l lithium, representing 64,000 tonnes LCE.
Nikolaos Cacos, CEO commented, “This initial resource marks a pivotal step in unlocking the full potential of Rincon West and reinforces Argentina Lithium’s position at the center of one of the most strategic lithium districts in the world. With Rio Tinto’s world-class Rincon Project as our direct neighbour and a strong offtake partnership with Stellantis, we are uniquely positioned to advance Rincon West rapidly and responsibly. This foundation allows us to leverage both, strategic infrastructure and commercial synergies, as we move toward the next phase of development.
As we advance PEA studies and evaluate advanced extraction technologies, our long-term focus remains crystal clear: to build a scalable, high-value lithium operation that generates sustainable returns for our shareholders. This initial resource provides a solid foundation on which we intend to expand the resource base: the exploration team will be carefully evaluating drilling below the current mineral resource, where expansion potential has been identified as the current mineral resource is open to depth. Together with our other highly prospective properties at Pocitos, Antofalla and Incahuasi, our company’s assets create a strong growth pipeline that will allow us to deepen strategic partnerships and accelerate development, potentially positioning Argentina Lithium as a key future supplier to the global EV and battery markets.”
The Mineral Resource estimate was completed at the West Block properties (mining concessions Villanoveño II and Rinconcita II) totalling 2,931 hectares. The resource estimate does not consider the Paso de Sico concessions in the northern part of the Rincon West project, which in aggregate represents 3742.9 hectares of mining concessions at the Rincon Salar. The resource was defined by 14 exploration boreholes totalling 4823.2 metres of diamond drilling, and one production well of 470 metres of total length.
Table 1 presents the Project’s mineral resources, volumes and grades by resource category for lithium and potassium. Table 2 shows the Project’s mineral resources expressed as Lithium Carbonate Equivalent (LCE) and Potassium Chloride (KCl).
Table 1. Lithium and Potassium Mineral Resources at the Rincon West Project
Notes to the resource estimate (Table 1):
1. CIM definitions were followed for Mineral Resources.
2. The Qualified Person for this Mineral Resource estimate is Frederik Reidel, CPG.
3. No cut-off values have been applied to the resource estimate.
4. Numbers may not sum exactly due to rounding.
Table 2. Lithium Carbonate Equivalent (LCE) and Potassium Chloride (KCl) Mineral Resources
Notes to Table 2
1. Lithium is converted to lithium carbonate (Li2CO3) with a conversion factor of 5.32.
2. Potassium is converted to potassium chloride with a conversion factor of 1.91.
3. Numbers may not sum exactly due to rounding.
The effective date of the Mineral Resource estimate is September 26, 2025. Supporting information for the Mineral Resource estimate will be detailed in an independent technical report prepared in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”) which will be filed on SEDAR+ under the Company’s profile within 45 days of the date of this news release.
