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Re-Os Isotope Composition and Source of Ore-forming Material of Pyrite in Tongkeng Tin-pollmetallic Deposit,Guangxi(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2009年第03期
Page:
230-235
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
Re-Os Isotope Composition and Source of Ore-forming Material of Pyrite in Tongkeng Tin-pollmetallic Deposit,Guangxi
Author(s):
LIANG Ting1 WANG Deng-hong2 QU Wen-jun3 CAI Ming-hai4 WEI Ke-li5
(1.Key Laboratory of Western Mineral Resources and Geological Engineering of Ministry of Education, Chang'an University,Xi'an 710054, Shaanxi, China; 2.Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China; 3.National Research Center for Geoanalysis, Chinese Academy of Geological Sciences, Beijing 100037, China; 4.School of Resources and Environment, Guangxi University, Nanning 530004, Guangxi, China; 5.Guangxi ChinaTin Group Company Limited, Liuzhou 545006, Guangxi, China)
Keywords:
pyrite Re-Os isotope compositions ore-forming material sources Tongkeng
PACS:
P618
DOI:
-
Abstract:
With the Re-Os isotopic technology, the Re-Os isotope composition of pyrites is identified, and the isochron age of(122±44)Ma is obtained. The initial ratio N(187Os)/N(188Os)of pyrite is 0.56±0.12, and the γOs value is between 197.46 and 394.16, with an average of 293.49. These data suggest a changing between the crust-derived and mantle-derived sources. Considering the ratio of w(Os)u versus w(Re)/w(Os), it is thought that the source of ore-forming materials may have the feature of crust-mantle derived mixture.

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Last Update: 2009-09-20