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LONDON - CleanTech Lithium (AIM:CTL) has reported a 17% increase in the mineral resource estimate at its Laguna Verde lithium project in Chile, according to a statement released Monday by Metals One (AIM:MET1), which holds approximately 10.7% of CleanTech Lithium's shares.
The updated JORC-compliant resource now stands at 1.9 million tonnes of Lithium Carbonate Equivalent (LCE) at a grade of 174 mg/L lithium, up from the previous estimate of 1.63 million tonnes reported in January 2025. Of this total, 0.84 million tonnes fall within the Measured and Indicated categories at a grade of 178 mg/L lithium.
The resource increase follows CleanTech Lithium's acquisition of additional licenses at the project, which was announced on August 11, 2025. According to the press release, these licenses were acquired to meet Chilean government requirements for entering a streamlined process for a Special Lithium Operating Contract (CEOL).
Laguna Verde is among six salars prioritized by the Chilean government for development by private companies. The government is currently finalizing indigenous community consultations for the project, after which the streamlined process is expected to be announced.
The resource estimate, calculated by hydrogeological consultant Montgomery & Associates, is based on three years of exploration work conducted between 2022 and 2024, including drilling programs, pump tests, and geophysical surveys.
The consultant has recommended three additional drillholes in the southwest, north, and northeast areas that could potentially further increase the resource. The Measured and Indicated resource will be used in an ongoing pre-feasibility study, which aims to establish a maiden reserve estimate for the project.
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