> Detailanzeige

Derrey, Insa Theresa [VerfasserIn]; Albrecht, Moritz [VerfasserIn]; Dupliy, Eygeniya [VerfasserIn]; Botcharnikov, Roman E. [VerfasserIn]; Horn, Ingo [VerfasserIn]; Junge, Malte [VerfasserIn]; Weyer, Stefan [VerfasserIn]; Holtz, Francois [VerfasserIn]

Experimental tests on achieving equilibrium in synthetic fluid inclusions: Results for scheelite, molybdenite, and gold solubility at 800 °C and 200 MPa - [accepted Version]

Literatur-
verwaltung

Zur
Merkliste

Lösche von
Merkliste

Per Whatsapp teilen

Schließen

Merkliste



Sie können Bookmarks mittels Listen verwalten, loggen Sie sich dafür bitte in Ihr SLUB Benutzerkonto ein.
  • Medientyp: E-Artikel; Sonstige Veröffentlichung
  • Titel: Experimental tests on achieving equilibrium in synthetic fluid inclusions: Results for scheelite, molybdenite, and gold solubility at 800 °C and 200 MPa
  • Beteiligte: Derrey, Insa Theresa [VerfasserIn]; Albrecht, Moritz [VerfasserIn]; Dupliy, Eygeniya [VerfasserIn]; Botcharnikov, Roman E. [VerfasserIn]; Horn, Ingo [VerfasserIn]; Junge, Malte [VerfasserIn]; Weyer, Stefan [VerfasserIn]; Holtz, Francois [VerfasserIn]
  • Erschienen: Berlin : Walter de Gruyter, 2017
  • Erschienen in: American Mineralogist 102 (2017), Nr. 2
  • Ausgabe: accepted Version
  • Sprache: Englisch
  • DOI: https://doi.org/10.15488/1255; https://doi.org/10.2138/am-2017-5869
  • ISSN: 0003-004X
  • Schlagwörter: Synthetic fluid inclusions ; molybdenite solubility in aqueous fluid ; scheelite solubility in aqueous fluid ; gold solubility in aqueous fluid ; equilibrium
  • Entstehung:
  • Anmerkungen: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Beschreibung: Synthetic fluid inclusions formed in high P-T experiments, which are subsequently analyzed with LA-ICP-MS, enable us to collect thermodynamic data to constrain metal transport in aqueous fluids as well as partitioning of metals between coexisting phases. The most essential prerequisite for such studies is to ensure that equilibrium conditions between liquid and solid phases are reached prior to the formation of synthetic fluid inclusions in the host mineral. Various methods have been proposed by different authors to achieve this goal, but to this point our knowledge on the best approach to synthesize equilibrated fluid inclusions under constrained pressure, temperature, and compositional (P, T, and X) conditions remains poor. In addition, information on the time needed to reach equilibrium metal concentrations in the fluid as well as on the timing of the onset of fluid inclusion formation in the host mineral are scarce. The latter has been tested in a series of time-dependent experiments at 800 °C and 200 MPa using scheelite (CaWO4), molybdenite (MoS2) and metallic gold as dissolving phases and using different approaches to optimize the formation of equilibrated fluid inclusions. Both Embedded Image and Embedded Image were fixed during all experiments using the pyrite-pyrrhotite-magnetite buffer (PPM). As an intermediate in situ quenching of the sample charge plays an important role in the synthesis of fluid inclusions, we further tested the efficiency of such an intermediate quench for re-opening fluid inclusions formed at 600 °C and 200 MPa. Our results reveal that fluid inclusions start forming almost instantaneously and that equilibrium between fluid and solid phases occurs in the timescale of less than two hours for molybdenite and gold up to ca. 10 h for scheelite. The best approach to synthesize equilibrated fluid inclusions at 800 °C was obtained by using an intermediate quench on a previously unfractured quartz host. Experiments at 600 °C showed similar results and illustrate that this should be the ...
  • Zugangsstatus: Freier Zugang