Deutsch
 
Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

 
 
DownloadE-Mail
  Oxygen fugacity during tin ore deposition from primary fluid inclusions in cassiterite

Schmidt, C., Gottschalk, M., Zhang, R., Lu, J. (2021): Oxygen fugacity during tin ore deposition from primary fluid inclusions in cassiterite. - Ore Geology Reviews, 139, Part A, 104451.
https://doi.org/10.1016/j.oregeorev.2021.104451

Item is

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Schmidt, C.1, Autor              
Gottschalk, Matthias1, Autor              
Zhang, Rongqing2, Autor
Lu, Jianjun2, Autor
Affiliations:
13.6 Chemistry and Physics of Earth Materials, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146036              
2External Organizations, ou_persistent22              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: Reconstruction of the redox conditions during formation of rocks and ore deposits often remains a challenging task, particularly if no reactions buffering the oxygen fugacity ƒO2 can be identified. This information is crucial for genetic models of numerous ore deposit types, and consequently there has been long-standing and in recent years increasing research activity addressing complexation and redox state of metals in fluids at high temperatures. In this study, we constrain ƒO2 during tin ore formation from the composition of primary fluid inclusions in the principal ore mineral cassiterite, SnO2. We show that the analysed cassiterite samples from worldwide locations (from hydrothermal veins, greisens, skarn deposits, and pegmatites) precipitated at ƒO2 between QFM (quartz-fayalite-magnetite) and above NNO (nickel-nickel oxide), with more oxidizing conditions up to MH (magnetite-hematite) for certain vein/greisen deposits. This, together with in situ Raman spectroscopic experiments, supports the hypothesis that Sn(IV) prevailed over Sn(II) in many if not most tin-ore forming hydrothermal fluids, which implies that redox reactions play a smaller role than assumed in previous formation models of hydrothermal tin deposits.

Details

einblenden:
ausblenden:
Sprache(n): eng - Englisch
 Datum: 2021-09-022021
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1016/j.oregeorev.2021.104451
GFZPOF: p4 T8 Georesources
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Ore Geology Reviews
Genre der Quelle: Zeitschrift, SCI, Scopus, OA , oa ab 2022
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 139 (Part A) Artikelnummer: 104451 Start- / Endseite: - Identifikator: ISSN: 0169-1368
ISSN: 1872-7360
CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals372
Publisher: Elsevier