Olgafrankite, Ni3Ge, a new mineral as the carrier of siderophile germanium in reduced systems. - Vereshchagin, Oleg S.; Khmelnitskaya, Maya O.; Kopylova, Albina G.; Solov'eva, Yulia V.; Krzhizhanovskaya, Maria G.; Kasatkin, Anatoly V.; Gorelova, Liudmila A.; Vlasenko, Natalia S.; Britvin, Sergey N. (American Mineralogist, 2025)