Author: Russia) Vserossiĭskai︠a︡ nauchno-prakticheskai︠a︡ konferent︠s︡ii︠a︡ "Geologii︠a︡ i mineralʹno-syrʹevye resursy Severo-Vostoka Rossii" (2nd 2012 I︠A︡kutsk