Las Vegas, Nev.-Marifil Mines Ltd. said Dec. 14 that an ongoing exploration program for potash in the Neuquen Basin in Argentina resulted in the identification of a large area highly favorable for potash in the northern portion of the basin in Mendoza Province. By staking 11 claims totaling 86,656 hectares, the company has acquired an area that it believes is highly prospective for potash. The claims, near Vale S.A.’s Rio Potasio potash mine, are also prospective for uranium, biogenic sulfur, lead, zinc, and asphaltites. Marifil said it plans to farm out or joint venture these properties.