Dec 19 (Reuters) - Eramet SA ::* As of 1 January, 2019, Hervé Montégu is appointed Senior Vice President of Lithium Activities within the Eramet group..* The new mission entrusted to Hervé Montégu is to develop this new activity. In particular, Eramet owns a lithium deposit of exceptional size in north-western Argentina, located at an altitude of 3,800 m in the province of Salta..* Lithium project entering its final preparation phase.* Completion of the technical and economic feasibility study is underway to specify the required investment, currently estimated at approximately €500 million for 24,000 tonnes.* Investment decision is scheduled for the first half of 2019 for production to start at end-2021.* Eramet is studying other development areas in lithium in Chile and Europe. .