Abundances and isotopic compositions of rhenium and osmium in pyrite samples from the Huaibei coalfield, Anhui, China

Two pyrite samples from the Shihezi Formation (Lower Permian), Huaibei coalfield, Anhui, China, have been analyzed for abundances and isotopic compositions of rhenium and osmium using negative thermal ion mass spectrometry. The Re–Os ages of the pyrites are 64.4 and 226 Ma, which are younger than th...

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Veröffentlicht in:	International journal of earth sciences : Geologische Rundschau 2008-05, Vol.97 (3), p.617-621
Hauptverfasser:	Liu, Guijian, Chou, Chen-Lin, Peng, Zicheng, Yang, Gang
Format:	Artikel
Sprache:	eng
Schlagworte:	Earth and Environmental Science Earth Sciences Geochemistry Geology Geophysics/Geodesy Isotopes Mass spectrometry Metals Mineral Resources original Paper Osmium Permian Pyrite Rhenium Sedimentary basins Sedimentology Structural Geology
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Zusammenfassung:	Two pyrite samples from the Shihezi Formation (Lower Permian), Huaibei coalfield, Anhui, China, have been analyzed for abundances and isotopic compositions of rhenium and osmium using negative thermal ion mass spectrometry. The Re–Os ages of the pyrites are 64.4 and 226 Ma, which are younger than the formation age of the coal seam. The pyrite samples may consist of pyrite formed at various stages during the history of coal formation. The γ Os values of the two pyrite samples are + 17 and + 18, respectively. Such high γ Os values are reported for the first time for recycles crustal materials from a sedimentary basin.
ISSN:	1437-3254 1437-3262
DOI:	10.1007/s00531-007-0184-0