Pyrite as a record of hydrothermal fluid evolution in a porphyry copper system: A SIMS/EMPA trace element study

Reich, Martín; Deditius, Artur P.; Chryssoulis, Stephen L.; Li, Jianwei; Ma, Chaojie; Parada, Miguel A.; Barra, Fernando; Mittermayr, Florian

doi:10.1016/j.gca.2012.11.006

Cited by 352 publications

(166 citation statements)

References 68 publications

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“…In contrast, Fig. 4b is a X-ray map of magnetite from the brecciated diorite intrusion that exhibits distinct oscillatory zoning, which is an indicator of fast crystal growth in a compositionally fluctuating hydrothermal system (Reich et al 2013;Dare et al 2015). The average Si and Ca concentrations (4500 and 1600 ppm, respectively) in these magnetites are similar to the data of Dare et al (2015) for the El Laco ore, where also oscillatory zoning was observed.…”

Section: Trace Element Profiles and Maps By Epmamentioning

confidence: 54%

“…This elemental dispersion may be caused by oscillatory zoning, which was observed in many magnetite of the brecciated diorite ( Fig. 3c and 4b) and which is likely related to hydrothermal processes (Dare et al 2014(Dare et al , 2015Reich et al 2013). Nadoll et al (2014a) classified different low temperature (BIF, Ag-Pb-Zn deposits), high temperature and igneous deposit types (Skarn, Climax and Porphyry deposits) using the Sn and Ga concentrations in magnetite from these deposits types.…”

Section: Identification Of the Magnetites Origin At Los Coloradosmentioning

confidence: 94%

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Trace elements in magnetite from massive iron oxide-apatite deposits indicate a combined formation by igneous and magmatic-hydrothermal processes

Knipping

Bilenker

Simon

et al. 2015

Geochimica et Cosmochimica Acta

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207

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. data demonstrate that a saline magmatic-hydrothermal ore fluid will scavenge significant quantities of metals such as Cu and Au from a silicate melt, and when combined with solubility data for Fe, Cu and Au, it is plausible that the magmatic-hydrothermal ore fluid that continues to ascend from the IOA depositional environment can retain sufficient concentrations of these metals to form iron oxide copper-gold (IOCG) deposits at lateral and/or stratigraphically higher levels in the crust. Notably, this study provides a new discrimination diagram to identify magnetite from Kiruna-type deposits and to distinguish them from IOCG, porphyry and Fe-Ti-V/P deposits, based on low Cr (< 100 ppm) and high V (>500 ppm) concentrations. Trace elements in magnetite from massive iron oxide-apatite deposits indicate a combined formation by igneous and magmatic-hydrothermal processes

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Section: Trace Element Profiles and Maps By Epmamentioning

confidence: 54%

Section: Identification Of the Magnetites Origin At Los Coloradosmentioning

confidence: 94%

Trace elements in magnetite from massive iron oxide-apatite deposits indicate a combined formation by igneous and magmatic-hydrothermal processes

Knipping

Bilenker

Simon

et al. 2015

Geochimica et Cosmochimica Acta

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207

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“…ppm Au in the Dexing porphyry Cu deposit in southeastern China (Reich et al, 2013); and ~1.15 wt. % from the Dongping orogenic Au deposit in northern China (Cook et al, 2009).…”

Section: Gold Solubility and Speciationmentioning

confidence: 98%

“…%) level, including As, Hg, and Tl (e.g., Arehart et al, 1993;Cook and Chryssoulis, 1990;Chowdhurry et al, 1999;Hofstra and Cline, 2000;Smedley and Kinniburgh, 2002;Goldfarb et al, 2005;Reich et al, 2005;Seedorff et al, 2005;Simmons et al, 2005;Rickard and Luther, 2007;Large et al, 2009;Deditius et al, 2011;Reich et al, 2013). Previous studies have shown that pyrite microstructure is complex and can record valuable information about the chemical and isotopic evolution of the fluids from which it precipitates (e.g., Frimmel, 2005;Wagner and Boyce, 2006;Farquhar et al, 2007;Phillipot et al, 2007;Barker et al, 2009;Deditius et al, 2009a;Reich et al, 2013;Agangi et al, 2014;Ingham et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Gold and arsenic incorporation into pyrite is strongly coupled in pyrite from many different types of ore deposits, including Carlin-type Au (e.g., Cline, 2001;Emsbo et al, 2003;Reich et al, 2005;Muntean et al, 2011), porphyry Cu, Cu-Au, and epithermal Au (e.g., Cook and Chryssouliss, 1990;Deditius et al, 2008;Reich et al, 2013), orogenic Au (e.g., Morey et al, 2008;Large et al, 2007), volcanogenic massive sulphide (VHMS) (Huston et al, 1995;McClenaghan et al, 2004), iron-oxide Cu-Au (IOCG) (Foster et al, 2007) and…”

Section: Introductionmentioning

confidence: 99%

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The coupled geochemistry of Au and As in pyrite from hydrothermal ore deposits

Deditius¹,

Reich²,

Kesler³

et al. 2014

Geochimica et Cosmochimica Acta

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The ubiquity of Au-bearing arsenian pyrite in hydrothermal ore deposits suggests that the coupled geochemical behaviour of Au and As in this sulfide occurs under a wide range of physico-chemical conditions. Despite significant advances in the last 20 years, fundamental factors controlling Au and As ratios in pyrite from ore deposits remain poorly known. Here we explore these constraints using new and previously published EMPA, LA-ICP-MS, SIMS, and μ-PIXE analyses of As and Au in pyrite from Carlin-type Au, epithermal Au,

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Mineralization processes at the giant Jinding Zn–Pb deposit, Lanping Basin, Sanjiang Tethys Orogen: Evidence from in situ trace element analysis of pyrite and marcasite

et al. 2017

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The giant Jinding Zn–Pb deposit is in the Mesozoic–Cenozoic Lanping Basin of southern China and hosted by sandstone in the Early Cretaceous Jingxing Formation and limestone breccia and sandstone and gypsum in the Palaeocene Yunlong Formation. Mineral associations at the deposit are early (Stage 1) marcasite–sphalerite(–pyrite) and galena–quartz; through (Stage 2) pyrite–sphalerite–galena(–arsenopyrite) and marcasite–celestite–carbonate–gypsum; and the late (Stage 3) galena–sphalerite–pyrite–sulfate–carbonate(–celestite), gypsum, and barite. Pyrite and marcasite have higher Pb, Zn, Ag, Bi, As, Se, and Tl and lower V, Cr, Co, Ni, Cu, and Sn assays in orebodies hosted by sandstone and brecciated limestone. The concentration of these elements progresses from the early to late stages with increasing Cu, Zn, Ag, Bi, V, Cr, Co, Ni, and Se; decreasing Tl and As; and constant Pb, Sn, and Sb. This chemical characteristic of the pyrite and marcasite indicates that their source is basinal brine with minor contribution from the host rocks. During the early and middle stages, pyrite and marcasite contain higher concentration of Pb, Tl, and As, which is related to mineralized basinal brine and H2S‐rich fluids at a low pH during relatively higher temperature conditions. During the late stage mineralization, pyrite and marcasite contain the highest concentrations of Cu, Zn, Ag, Sb, Pb, Bi, and Se, which is associated with metal‐rich basinal brine and meteoric water at a near‐neutral pH and lower temperature conditions.

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Pyrite as a record of hydrothermal fluid evolution in a porphyry copper system: A SIMS/EMPA trace element study

Cited by 352 publications

References 68 publications

Trace elements in magnetite from massive iron oxide-apatite deposits indicate a combined formation by igneous and magmatic-hydrothermal processes

Trace elements in magnetite from massive iron oxide-apatite deposits indicate a combined formation by igneous and magmatic-hydrothermal processes

The coupled geochemistry of Au and As in pyrite from hydrothermal ore deposits

Mineralization processes at the giant Jinding Zn–Pb deposit, Lanping Basin, Sanjiang Tethys Orogen: Evidence from in situ trace element analysis of pyrite and marcasite

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