The acquisition cost must be allocated , generally would be land,buildings, equipment,mineral rights and goodwill. Mineral rights and goodwill in particular need to be tested for impairment. Since no reserves most likely proper accounting for a SEC reporting company would require impairment. In any case they would be allocating the cost, not current market estimates- and cost as detemrined by fair market value of consideration issued.
Also there is different accounting if seller is in any way a related party, at that point they could only book predecessor cost, i.e. what seller paid.
I suspect if they acquire the mine there wil be reclamation liability potential, and a new round of permits and imspections required. I would fall out of my chair if they had any ore from newly acquired mines in 2013.
