Geochemical Evolution and Ore-Bearing Metasomatic Rocks of the Baga-Gazryn Multiphase Massif of Rare-Metal Li–F Granites (Mongolia)

Resumo

This paper considers the geochemical evolution of igneous and metasomatic rocks in the Baga-Gazryn Massif on the basis of new precision analytical data. The Baga-Gazryn rocks are characterized by enrichment in F, which is concentrated in Li–F mica, topaz, and fluorite. Along with F, zwitters and microclinites are enriched in Li, Rb, Cs, and ore elements Sn, W, Zn. High-charge elements (Zr, Hf, Nb, Ta, and Ti) and also Th and U are not very different in the Baga-Gazryn granites of various phases and metasomatic rocks.