Experimental study of the effect of SiO2 on Ni solubility in silicate melts

被引：14

作者：

Borisov, A. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Ore Deposit Geol Petrog Mineral & Geoche, Moscow 119017, Russia

来源：

PETROLOGY | 2006年 / 14卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/S0869591106060026

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The solubility of Ni in silicate melts with variable SiO2 content was studied at a total pressure of 1 atm within a wide range of temperature and oxygen fugacity. The maximum solubility of Ni ( minimum activity coefficient of NiO) was observed in melts with similar to 55-57 wt % SiO2, regardless of temperature and oxygen fugacity. Melts beyond this range showed significantly lower Ni solubility and, correspondingly, higher NiO activity coefficients. The analysis of our results and literature data led us to the conclusion that the NBO/T (number of nonbridging oxygen atoms per tetrahedrally coordinated atom) is inadequate to describe the effect of melt composition on Ni solubility.

引用

页码：530 / 539

页数：10

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