Data for: Carbonatite and highly peralkaline nephelinite melts from Oldoinyo Lengai Volcano, Tanzania: the role of natrite-normative fluid degassing

Compositions of egirin-augite, nepheline, silicate melts, carbonate melts and immiscible melt pairs from nephelinite, Oldoinyo Lengai Tanzania.来自坦桑尼亚伦盖火山（Oldoinyo Lengai）霞石岩（nephelinite）的埃基普通辉石（egirin-augite）、霞石（nepheline）、硅酸盐熔体（silicate melts）、碳酸盐熔体（carbonate melts）及不混溶熔体对（immiscible melt pairs）的组成数据。