 | Firstova, Anna, Stepanova, Tamara, Sukhanova, Anna, Cherkashov, Georgy, Poroshina, Irina (2019) Au and Te Minerals in Seafloor Massive Sulphides from Semyenov-2 Hydrothermal Field, Mid-Atlantic Ridge. Minerals, 9 (5) 294 doi:10.3390/min9050294 | Journal (article/letter/editorial) | | Seafloor Massive Sulphides from Semyenov-2 Hydrothermal Field, Mid-Atlantic Ridge Anna Firstova 1,2, *, Tamara...Irina Poroshina 1 1 2 * Institute for Geology and Mineral Resources of the Ocean (FSBI “VNIIOkeangeologia”)...Abstract: The Semyenov-2 hydrothermal field located at 13◦ 310 N of the Mid-Atlantic Ridge (MAR) is associated...associated with an oceanic core complex (OCC) and hosted by peridotites and basalts with minor amounts...related to high-temperature chalcopyrite (~350 ◦ C); electrum (AuAg)1 , hessite (Ag2 Te) and altaite (PbTe) |  | | Journal (article/letter/editorial) | | Accepted: 6 May 2019 # The Author(s) 2019 Abstract Hydrothermal fluids on the modern seafloor are important... in part reflecting strong buffering of the hydrothermal fluids by their host rocks. Geochemical reaction-path...modeling shows that in most cases the investigated hydrothermal fluids are undersaturated with gold and silver...Precipitation of gold during conductive cooling of mid-ocean ridge black smoker (MOR) fluids occurs at low temperatures...ultramafic-dominated (UM) systems, the strongly reduced hydrothermal fluids promote the deposition of gold at higher |
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