THE INFLUENCE OF OXYGEN FUGACITY ON TUNGSTEN AND MOLYBDENUM PARTITIONING BETWEEN SILICATE MELTS AND ILMENITE

被引：153

作者：

CANDELA, PA

BOUTON, SL

机构：

来源：

ECONOMIC GEOLOGY AND THE BULLETIN OF THE SOCIETY OF ECONOMIC GEOLOGISTS | 1990年 / 85卷 / 03期

关键词：

D O I：

10.2113/gsecongeo.85.3.633

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 partitioning of molybdenum and tungsten between ilmenite (ilm) and silicic melts has been determined at 800°C, 1 kbar of pressure, and at two oxygen fugacities. The observed variation with oxygen fugacity is tentatively extrapolated to more complex systems and implies that the oxygen fugacity which prevails during magmatic crystallization may play a role in determining the Mo/W ratio in porphyry, skarn, or other hydrothermal mineral deposits. It is suggested that fO2-dependent sequestration of molybdenum and tungsten in ferromagnesian phases during plutonic consolidation exerts a control on the relative efficiencies of removal of these metals from magmas into ore-forming fluids. -from Authors

引用

页码：633 / 640

页数：8

共 28 条

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[2]

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