The origin of Cu/Au ratios in porphyry-type ore deposits

被引：158

作者：

Halter, WE ^{[1
]}

Pettke, T ^{[1
]}

Heinrich, CA ^{[1
]}

机构：

[1] ETH Zentrum NO, Dept Earth Sci, CH-8092 Zurich, Switzerland

来源：

SCIENCE | 2002年 / 296卷 / 5574期

关键词：

D O I：

10.1126/science.1070139

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Microanalysis of major and trace elements in sulfide and silicate melt inclusions by laser-ablation inductively coupled plasma mass spectrometry indicates a direct link between a magmatic sulfide liquid and the composition of porphyry-type ore deposits. Copper (Cu), gold (Au), and iron (Fe) are first concentrated in a sulfide melt during magmatic evolution and then released to an ore-forming hydrothermal fluid exsolved late in the history of a magma chamber. The composition of sulfide liquids depends on the initial composition and source of the magma, but it also changes during the evolution of the magma in the crust. Magmatic sulfide melts may exert the dominant direct control on the economic metal ratios of porphyry-type ore deposits.

引用

页码：1844 / 1846

页数：3

共 23 条

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