РЕДКИЕ ЭЛЕМЕНТЫ КАК ИНДИКАТОРЫ УСЛОВИЙ ОБРАЗОВАНИЯ РУДОНОСНЫХ ПОРОД ТУЛИНСКОГО МАССИВА (МАЙМЕЧА-КОТУЙСКАЯ ПРОВИНЦИЯ)

Abstract

The paper displays some new data about distribution of rare earths, tantalum and niobium in rocks of Gulin-sky massif of alkaline, ultramafic rocks and carbonatites located at the northern margin of Siberian platform. Analysis of relations between chondnte-normalized contents of rare earths shows the general tendency in their distribution: the light lanthanoids predominate over the heavy ones. The rare-metal mineralization in the Gulins-ky massif carbonatites is represented by the gatchettolite-pyrochlore association, and it is characterized by rather weak development.