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Sulfur and strontium isotopic study of epithermal mineralization: A case study from the SE Afar Rift, Djibouti 5
Moussa, N.; Rouxel, Olivier; Grassineau, N. V.; Ponzevera, Emmanuel; Nonnotte, P.; Fouquet, Yves; Le Gall, B..
Epithermal mineralization was recently described in synrift volcanic rocks from the SE Afar Rift in Djibouti. To infer fluid sources in this system, coupled sulfur and strontium isotopic analyses were performed on mineralized samples from hydrothermal veins and stockwork zones. Mineralization includes gypsum and chalcedony, and/or quartz ± carbonate containing gold and sulfides. Sulfur isotopic compositions of sulfides and sulfates were determined using Multicollector-Inductively Coupled Plasma Mass Spectrometer (MC ICPMS); Laser Ablation MC ICPMS; and Continuous Flow Elemental Analyzer-Isotope Ratio Mass Spectrometry while strontium isotopes were determined by Thermal Ionisation Mass Spectrometry (TIMS) methods. Sulfur isotopic composition of sulfides...
Tipo: Text Palavras-chave: Hydrothermal system; Sulfur isotopes; Strontium isotopes; SE Afar rift; Epithermal.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00356/46712/46581.pdf
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