The chemical composition of magma (melt inclusion) from melilite-bearing nephelinite of the Belaya Zima carbonatite complex (Eastern Sayan)

The detailed investigation of melt inclusions in nepheline and perovskite showed that the rock formation proceeded from incompletely saturated with silica high-Ca magmatic melt substantially enriched with alkaline, rare and volatile components such as H2O, CO2, Cl and S. Established for the first time niobium-tantalum character of the parent for the studied rocks magmas definitely confirms the geochemical specificity of the Belaya Zima deposit.