Argosy Minerals Ltd. said Feb. 27 that it executed the second earn-in joint venture agreement on the Rincon lithium project in Argentina, confirming that the company has raised its project stake to 77.5%.

Under the deal with Argosy's joint venture partners, Pablo Alurralde and Francisco Menendez, the company increased its shareholding in Puna Mining SA to 77.5% and retains the right to further increase this interest to 90% upon completing the project's stage-three development.

Puna Mining owns the Rincon project.