A new method for U-Pb geochronology of cassiterite by ID-TIMS applied to the Mole Granite polymetallic system, eastern Australia

A new method for U-Pb geochronology of cassiterite by ID-TIMS applied to the Mole Granite polymetallic system, eastern Australia

We present a new method for precisely determining the U-Pb isotopic composition of cassiterite by isotope dilution-thermal ionisation mass spectrometry (ID-TIMS). Complete sample dissolution and spike-sample equilibration is accomplished in a pressure vessel with HBr. Isolation of small quantities o...

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Veröffentlicht in:Chemical geology 2020-04, Vol.539, p.119539, Article 119539
Hauptverfasser: Carr, Patrick A., Zink, Sonja, Bennett, Vickie C., Norman, Marc D., Amelin, Yuri, Blevin, Phillip L.
Format: Artikel
Sprache:eng
Schlagworte:
Cassiterite
ID-TIMS
Tin granites
U-Pb geochronology
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Zusammenfassung:We present a new method for precisely determining the U-Pb isotopic composition of cassiterite by isotope dilution-thermal ionisation mass spectrometry (ID-TIMS). Complete sample dissolution and spike-sample equilibration is accomplished in a pressure vessel with HBr. Isolation of small quantities of U and Pb from the tin-rich matrix is based on a novel TRU-spec column separation with total procedural blanks of
ISSN:0009-2541
1872-6836
DOI:10.1016/j.chemgeo.2020.119539