Complex sulfur speciation in scapolite – Implications for the role of scapolite as a redox and fluid chemistry buffer in crustal fluids

Jonathan Hamisi,Barbara Etschmann,Andrew Tomkins,Iain Pitcairn,Zsanett Pintér,Adam Wlodek,Laura Morrissey,Steven Micklethwaite,Nicolas Trcera,Stuart Mills,Joël Brugger

Gondwana Research（2023）

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摘要

•Scapolite hosts S in oxidised (SO3 and SO2) and reduced forms (polysulfides and minor sulfide).•Most reduced S was found in scapolites formed under amphibolite facies.•S in scapolite can buffer ore fluid oxidation state to sulphate/sulphide coexistence.

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关键词

Scapolite, Sulfur, XANES spectroscopy, Redox, Ligands, hydrothermal, albitisation, scapolitisation

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