### Assessing sulfur redox state and distribution in abyssal serpentinites using spectroscopy

Helen Williams & B Debret
Sulfur is one of the main redox sensitive and volatile elements involved in chemical transfers between earth surface and the deep mantle. At mid-oceanic ridges, sulfur cycle is highly inﬂuenced by serpentinite formation which acts as a sink of sulfur under various oxidation states (S 2 − , S − , S 0 and S 6 + ). Sulfur sequestration in serpentinites is usually attributed to the crystallization of secondary minerals, such as sulﬁdes (e.g....
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