Trace element systematics of pyrite from submarine hydrothermal vents

Keith, Manuel; Häckel, Florian; Haase, Karsten M.; Schwarz-Schampera, Ulrich; Klemd, Reiner

doi:10.1016/j.oregeorev.2015.07.012

Cited by 216 publications

(189 citation statements)

References 87 publications

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“…2) may be explained by variable fluid conditions during pyrite 1 growth or changes in the physicochemical parameters of the discharging parental fluids linked to the episodic nature of the Kolumbo hydrothermal vent system (cf. Maslennikov et al, 2009;Wohlgemuth-Ueberwasser et al, 2015;Keith et al, 2016). Variations in the physicochemical parameters of hydrothermal fluids, namely temperature, pH, redox conditions, salinity and ligand availability, coupled by magmatic volatile contribution, are known to influence trace element composition of pyrite from modern submarine hydrothermal sulfide ores (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…The most immature textures are those of pyrite 1 (Fig. 1) which may have formed directly from hydrothermal fluids during the early stages of chimney growth (Wohlgemuth-Ueberwasser et al 2015;Keith et al, 2016). The final stage of recrystallization during the mature stage of chimney growth are represented by samples with well-defined, massive textures consisting of interlocking subhedral to euhedral minerals (i.e.…”

Section: Discussionmentioning

confidence: 99%

“…More specifically, despite its importance for understanding the genesis and metal enrichment of currently explored ancient VMS deposits (e.g. Au, which is often associated with As and Sb), understanding the distribution of Sb and related trace metals during the formation and transformation of massive sulfides on the modern seafloor, and especially shallow submarine hydrothermal systems, remains tentative (Filella et al, 2002a;Filella et al, 2009;Majzlan and Fillela, 2012;Meleketseva et al, 2014;Wohlgemuth-Ueberwasser et al, 2015;Keith et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Antimony Fixation in Solid Phases at the Hydrothermal Field of Kolumbo Submarine Arc-Volcano (Santorini): Deposition Model and Environmental Implications

Kilias¹,

Gousgouni²,

Godelitsas³

et al. 2017

geosociety

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Antimony Fixation in Solid Phases at the Hydrothermal Field of Kolumbo Submarine Arc-Volcano (Santorini): Deposition Model and Environmental Implications

Kilias¹,

Gousgouni²,

Godelitsas³

et al. 2017

geosociety

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“…3) further imply that wall rock leaching in the reaction and fluid upflow zone represents a likely process that can explain the high Cu concentrations (up to 35.6 wt%) in the seafloor massive sulphide ores (de Ronde et al 2011). However, previous studies also suggested that Cu and other chalcophile metals are contributed to the Brothers hydrothermal system by exsolving magmatic volatiles from the underlying magma chamber (de Ronde et al 2011;Keith et al 2016a), possibly suggesting a bimodal Cu source. bubbles in plagioclase-hosted melt inclusions from Brothers volcano (electronic supplement, Fig.…”

Section: Formation Of Magmatic Sulphides and Their Potential Role As mentioning

confidence: 93%

“…40 Page 2 of 16 (de Ronde et al 2005(de Ronde et al , 2011Keith et al 2016a). In addition to a magmatic volatile signature, acid-sulphate (advanced argillic) alteration, sulphosalts (e.g., enargite, Cu 3 AsS 4 ) typical for high-sulphidation conditions (Einaudi et al 2003) and high contents of economically important metals (e.g., Cu and Au) in some submarine arc and back-arc hydrothermal systems imply that they may be comparable to epithermal-porphyry deposits on land, such as the worldclass Far Southeast-Lepanto Cu-Au deposits (Philippines; Hedenquist et al 1998).…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Constraints on the source of Cu in a submarine magmatic-hydrothermal system, Brothers volcano, Kermadec island arc

Keith

Haase

Klemd

et al. 2018

Contrib Mineral Petrol

Self Cite

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Most magmatic-hydrothermal Cu deposits are genetically linked to arc magmas. However, most continental or oceanic arc magmas are barren, and hence new methods have to be developed to distinguish between barren and mineralised arc systems. Source composition, melting conditions, the timing of S saturation and an initial chalcophile element-enrichment represent important parameters that control the potential of a subduction setting to host an economically valuable deposit. Brothers volcano in the Kermadec island arc is one of the best-studied examples of arc-related submarine magmatic-hydrothermal activity. This study, for the first time, compares the chemical and mineralogical composition of the Brothers seafloor massive sulphides and the associated dacitic to rhyolitic lavas that host the hydrothermal system. Incompatible trace element ratios, such as La/Sm and Ce/Pb, indicate that the basaltic melts from L'Esperance volcano may represent a parental analogue to the more evolved Brothers lavas. Copper-rich magmatic sulphides (Cu > 2 wt%) identified in fresh volcanic glass and phenocryst phases, such as clinopyroxene, plagioclase and Fe-Ti oxide suggest that the surrounding lavas that host the Brothers hydrothermal system represent a potential Cu source for the sulphide ores at the seafloor. Thermodynamic calculations reveal that the Brothers melts reached volatile saturation during their evolution. Melt inclusion data and the occurrence of sulphides along vesicle margins indicate that an exsolving volatile phase extracted Cu from the silicate melt and probably contributed it to the overlying hydrothermal system. Hence, the formation of the Cu-rich seafloor massive sulphides (up to 35.6 wt%) is probably due to the contribution of Cu from a bimodal source including wall rock leaching and magmatic degassing, in a mineralisation style that is hybrid between Cyprus-type volcanic-hosted massive sulphide and subaerial epithermal-porphyry deposits.

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Sulfur isotopic and trace‐element compositions of pyrite from the Zankan iron deposit, West Kunlun Orogenic Belt, China: Possible Early Cambrian banded iron formations

et al. 2021

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Abundant iron deposits characterized by stratified orebodies have recently been discovered in the Taxkorgan Terrane, West Kunlun Orogenic Belt, China. Of these deposits, the Zankan iron deposit was the first to be discovered and has the largest estimated tonnage. However, the iron mineralization types for this deposit and others in this area are uncertain, mainly because of the apparent conflict between their typical banded architecture and Cambrian ages. In this study, in situ sulfur isotopic and trace‐element compositions of pyrite, including that in orebodies coexisting with magnetite (Py(o)), pyrite veinlets in strata (Py(v)), and rhyolite and magnetite veins cross‐cutting rhyolite (Py(r)), were conducted to ascertain the genesis of the Zankan deposit. Our results reveal that the pyrite in Zankan deposit has marked positive δ34S values (17.20‰–29.86‰). In addition, Py(o) has low Co/Ni ratios, which are distinct to Py(r) and Py(v), meaning that they belong to typical marine chemical precipitates and magmatic–hydrothermal pyrite, respectively. The coexistence of pyrite and magnetite suggests that the Zankan iron deposit was precipitated in a euxinic basin. Together, our results suggest that seawater sulfate concentrations were low, and the scale and sulfur isotopic compositions of this euxinic basin were most likely dominated by changes in sea level eustacy, which controlled the proportions of seawater and riverine inputs. Comparison with typical Precambrian banded iron formations (BIFs) suggests that the Zankan iron deposit belongs to a unique class of Cambrian BIFs that were controlled predominantly by basins in a shelf environment with locally anoxic conditions.

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Trace element systematics of pyrite from submarine hydrothermal vents

Cited by 216 publications

References 87 publications

Antimony Fixation in Solid Phases at the Hydrothermal Field of Kolumbo Submarine Arc-Volcano (Santorini): Deposition Model and Environmental Implications

Antimony Fixation in Solid Phases at the Hydrothermal Field of Kolumbo Submarine Arc-Volcano (Santorini): Deposition Model and Environmental Implications

Constraints on the source of Cu in a submarine magmatic-hydrothermal system, Brothers volcano, Kermadec island arc

Sulfur isotopic and trace‐element compositions of pyrite from the Zankan iron deposit, West Kunlun Orogenic Belt, China: Possible Early Cambrian banded iron formations

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