ti-fe-cr spinels in layered (stratified) complexes of the western slope of the southern urals: species diversity and formation conditions

Materials on geochemistry and ore fe-ti-cr mineralization of rocks composing layered (stratified) bodies of the western slope of the southern urals are presented. a detailed analysis showed similarity in the redistribution of ree, noble metals, and fe-ti-cr mineralization of practically all parameters in rocks of the misaelga and kusin-kopan complexes. it has been established that the parameters of metamorphism, which influenced components redistribution in fe-ti-cr minerals of the layered complexes, correspond to misaelga – t = <550-750 °с, p = 0.1-2.8 kbar, kusin-kopan – t = <550-630 °с, p = 0.3-0.7 kbar, and shuidinsky complexes – t = <550-760 °с, p = 0.5-2.5 kbar. the result of modelling the melt crystallization process showed that the kusin-kopan complex is an intrusive body with an ultramafic horizon in the idealized cross-section. due to collisional processes, the lower part of the intrusion has been detached from the upper part. the proposed structure of the kusin-kopan complex sharply increases its prospects for such types of minerals as platinum group minerals + sulphide copper-nickel mine-ralization and/or chromites.