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|Title:||Halogens in hydrothermal sphalerite record origin of ore-forming fluids|
Verdugo Ihl, M.R.
|Citation:||Geology, 2020; 48(8):766-770|
|Publisher:||Geological Society of America|
|Max Frenzel, Nigel J. Cook, Cristiana L. Ciobanu, Ashley D. Slattery, Benjamin P. Wade, Sarah Gilbert, Kathy Ehrig, Mathias Burisch, Max R. Verdugo-Ihl, and Panagiotis Voudouris|
|Abstract:||The halogens Cl and Br are sensitive indicators for the origin of ore-forming fluids. Here, we use a combination of microchemical and microscopic methods to show that measurable concentrations of these elements commonly occur as atomic-scale substitutions in hydrothermal sphalerite. Furthermore, the Cl/Br ratios of halogen-rich sphalerites are indistinguishable from those of the corresponding ore-forming fluids. Thus, they record fluid compositions, which in turn record fluid origin. Given the abundance of sphalerite in hydrothermal base-metal deposits, as well as the relative ease of conducting in situ microchemical analyses, the halogen signature of sphalerite has the potential to become a sensitive proxy to distinguish between different ore-forming environments.|
|Rights:||© 2020 Geological Society of America. For permission to copy, contact firstname.lastname@example.org.|
|Appears in Collections:||Chemical Engineering publications|
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