Gold Mountain is part of a three-company deal that will lead to the formation of a new lithium joint venture in Brazil. Credit: File Gold Mountain (ASX: GMN) will keep a foot planted on the Salitre lithium project in Brazil that is now set to become a joint venture (JV) operation that it will share with Alderan Resources (ASX: AL8) and Mars Mines as part of a new earn-in deal. The company today detailed an agreement that will allow Alderan to grab up to 80 per cent of Salitre