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Mass transfer of metals and sulfur between mafic silicate melts and volatiles: an interdisciplinary approach

Mass transfer of metals and sulfur between mafic silicate melts and volatiles: an interdisciplinary approach

Objective

A systematic experimental study will be conducted to obtain quantitative information on the distribution of Cu, Au and S between andesitic and basaltic silicate melts and volatile phases. The experiments will be carried out in cold seal and internally heated pressure vessels, at various conditions characteristic of upper crustal magma reservoirs. The fluid phase will be trapped as synthetic fluid inclusions in mafic minerals or in fine grained mineral traps at the experimental run conditions. The chemical composition of the phases and the speciation of the elements will be analyzed using LA-ICPMS and X-ray Absorption Spectroscopy, respectively. From these data, the partition coefficients of S, Cu and Au between the fluid and the melt will be calculated and interpreted in a thermodynamic framework. The results will be used to build mass transfer models to assess the efficiency of the spatial redistribution of S, Cu and Au through volatiles within complex magmatic reservoirs at various physical and chemical conditions. These models will lead to a better understanding of processes responsible for formation of porphyry-type ore deposits and the controls on the composition of emitted gases by active volcanoes.

Coordinator

EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH

Address

Raemistrasse 101
8092 Zuerich

Switzerland

Activity type

Higher or Secondary Education Establishments

EU Contribution

€ 237 981,03

Administrative Contact

Carmen Sanchez-Valle (Prof.)

Project information

Grant agreement ID: 221054

Status

Closed project

  • Start date

    15 November 2008

  • End date

    14 November 2011

Funded under:

FP7-PEOPLE

  • Overall budget:

    € 237 981,03

  • EU contribution

    € 237 981,03

Coordinated by:

EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH

Switzerland