Mayenite-supergroup minerals from burned dump of the Chelyabinsk Coal Basin V.V. Sharygin a,b,* a V.S. Sobolev... 630090, Russia b Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia Received...composition) from the dump at the Baturinskaya-Vostochnaya-1-2 mine. These are eltyubyuite Ca12Fe3+ 10...“Mg-cuspidine” Ca3.5(Mg,Fe)0.5(Si2O7)F2, fluorite, barioferrite BaFe12O19, zhangpeishanite BaFCl, and other...burned spoil heaps; Chelyabinsk coal basin Introduction The combustion of coal mine spoil heaps leads |