Mutual interaction of redox pairs in silicate melts: Equilibria involving metallic phases

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• 作者：A. A. Borisov
• 刊名：Petrology
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：24
• 期：2
• 页码：117-126
• 全文大小：419 KB
• 刊物主题：Mineralogy; Geochemistry;
• 出版者：Springer US
• ISSN：1556-2085
• 卷排序：24

文摘

Mutual interaction of redox pairs resulting in the origin or decomposition of a metal phase is analyzed based on the concept of intrinsic oxygen fugacity. Reactions are suggested that may be responsible for the synthesis (or decomposition) of submicrometer-sized metal nuggets when experimental melts are quenched and can explain the possible crystallization of Pt—Fe alloys when basaltic melts cool and elucidate the nature of color of Au-bearing ruby glass. Possible disproportionation reactions of certain lower oxides into a higher oxide and respective metal in cooled silicate melts are discussed.Original Russian Text © A.A. Borisov, 2016, published in Petrologiya, 2016, Vol. 24, No. 2, pp. 131–141.