The Zhidoy massif of ultrabasic-alkaline rocks and carbonatites: its geochemical features, sources and ore potential.

 The article describes geological structure of Jidoi massif and its age. The scheme of the massif magmatism has been constructed. Double correlation plots of petrogenic elements of rocks of the massif in which the unified trend of rock structures is observed, are given for verification of correctness of the scheme of magmatism. Spectra of TR and spider diagrams of concentrations of rare elements in rocks of the massif are given. Piroxenites, early rocks of the massif are ores on titanium. Titanium concentrates in three minerals: titanomagnetite, ilmenite and perovskite. The main type of titanium ores is perovskitic type, it is known only in Jidoi massif. Mantle sources of primary magma of the massif is concluded on the basic of geochemistry of isotopes of Sr and Nd.