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Melt inclusions in veins: Linking magmas and porphyry Cu deposits

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posted on 2023-05-25, 23:08 authored by Harris, AC, Vadim Kamenetsky, White, NC, van Achterbergh, E, Ryan, CG
At a porphyry copper-gold deposit in Bajo de la Alumbrera, Argentina, silicate melt inclusions coexist with hypersaline liquid- and vapor-rich inclusions in the earliest magmatic-hydrothermal quartz veins. Copper concentrations of the hypersaline liquid and vapor inclusions reached maxima of 10.0 weight % (wt %) and 4.5 wt %, respectively. These unusually copper-rich inclusions are considered to be the most primitive ore fluid found thus far. Their preservation with coexisting melt allows for the direct quantification of important oreforming processes, including determination of bulk partition coefficients of metals from magma into ore-forming magmatic volatile phases.

History

Publication title

Science

Volume

302

Pagination

2109-2111

ISSN

0036-8075

Department/School

School of Government

Publication status

  • Published

Rights statement

An overview of this article (Science Magazine's Perspectives) has been published by Jean Cline (2003): How to Concentrate Copper, Science v. 302 (5653), 2075. [DOI: 10.1126/science.1093202]

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  • Open

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