Re-Os Isotopic Dating of Molybdenite from the Langyashan Copper Deposit in Chuzhou of Anhui Province and Its Geological Significance

QIN Yan; MEI Yuping; WANG Denghong; ZHANG Jian; WU Libin

2009 Vol. 28, No. 3

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QIN Yan, MEI Yuping, WANG Denghong, ZHANG Jian, WU Libin. Re-Os Isotopic Dating of Molybdenite from the Langyashan Copper Deposit in Chuzhou of Anhui Province and Its Geological Significance[J]. Rock and Mineral Analysis, 2009, 28(3): 259-264.

Citation:

Re-Os Isotopic Dating of Molybdenite from the Langyashan Copper Deposit in Chuzhou of Anhui Province and Its Geological Significance

1.
Graduate School of Chinese Academy of Geological Sciences
2.
Yichang Institute of Geology and Mineral Resources, China Geological Survey
3.
Insititute of Mineral Resources, Chinese Academy of Geological Sciences
4.
Graduate School of Chinese Academy of Geological Sciences
5.
Geological Survey of Anhui Province

Received Date: 01 February 2009

Revised Date: 15 March 2009

Publish Date: 28 June 2009

Abstract

Abstract

A precise Re-Os age is given for the Langyashan copper deposit in Chuzhou. The model age for five molybdenite samples from the deposit varies from (128.9±1.8) Ma to (130.3±1.9) Ma and the isochron age is (128.6±2.2) Ma, MSWD=0.45. The results indicate that the origin of the deposit is from regional tectno-magmatic activities during the early cretaceous period. The molybdenites from the Langyashan copper deposit have a very high Re content, which indicates that the deposit originated from the mixing of the crust and the mantle sources with the mantle as a primary source.
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