There is no more mentioning of it since 2019 :

In 2012, Minera Exar granted a conditional right to Jujuy Energia y Mineria Sociedad del Estado (“JEMSE”), a mining and energy investment company owned by the government of Jujuy Province in Argentina, to acquire an 8.5% equity interest in Minera Exar and provide management services as required to develop the Project.

https://youtu.be/ztt8shYdw2k