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Based on the characteristics of granites of the Nanling region, a procedure was specially designed to do experiment on the immiscible liquid phase. The starting materials were biotite granite + NnF + LiF. Under 1000 bar and 840℃, more than two immiscible liquid phases were produced from the homogeneous granite melt rich in F and Li. Electron microprobe data suggest that the immiscible liquid phases can be divided into (ⅰ) a silicate melt rich in F and Fe (melanocratic glass balls), (ⅱ) a silicate melt poor in F (matrix glass), and (ⅲ) a melt consisting mainly of fluorates (leucocratic glass balls). In conjunction with the chemical and mineral compositions, the structure and texture of granites in the Nanling region, the experimental results are discussed in this paper. The theory of liquid immiscibility can well account for the globular structure, glass inclusions pressent in minerals mineralized globular "inclusions", flow structure, banded structure and layer structure as are observed in Nanling g 相似文献
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