Rockforming and oreforming ages of the Baizhangyan tungstenmolybdenum ore deposit in Qingyang, Anhui Province and their geological significance.

Earth Science Frontiers ›› 2010, Vol. 17 ›› Issue (2): 170-177.

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Rockforming and oreforming ages of the Baizhangyan tungstenmolybdenum ore deposit in Qingyang, Anhui Province and their geological significance.

QIN Yan, WANG De-Gong, LI Yan-He, WANG Ke-You, TUN Li-Ban, MEI Yu-Ping

1Graduate Department, Chinese Academy of Geological Sciences, Beijing 100037, China
2Key Laboratory of Metallogeny and Mineral Resource Assessment, Institute of Mineral Resources,Chinese Academy of Geological Sciences, Beijing 100037, China
3Anhui Geological Survey, Hefei 230000, China
4Yichang Institute of Geology and Mineral Resources, Yichang 443003, China

Received:2009-06-28 Revised:2009-11-10 Online:2010-03-15 Published:2010-04-05

Abstract

Abstract:

Baizhangyan tungstenmolybdenum ore deposit is a newly developed deposit which was found on the base of a small exposure of mineralization occurrence. With highly precise dating of the ages of the rockforming and oreforming, the authors obtained a SHRIMP UPb zircon age of (130±15) Ma（n=14，MSWD=069）for finegrained granite and ReOs model ages of (133.5±1.9)(135.6±2.0) Ma and isochron age of (136.3±2.6) Ma（n=5，MSWD=0.64）. According to the ages above, the authors concluded that the deposit was formed in the Early Cretaceous; that it was the result of intrusions of the granite which was of crustsource remelting type. The oreforming age is similar to the rockforming age of the granite rock body that was important to the deposit.

Key words: Baizhangyan tungstenmolybdenum ore deposit, SHRIMP, UPb, ReOs, zircon, molybdenite, Qingyang

CLC Number:

QIN Yan, WANG De-Gong, LI Yan-He, WANG Ke-You, TUN Li-Ban, MEI Yu-Ping. Rockforming and oreforming ages of the Baizhangyan tungstenmolybdenum ore deposit in Qingyang, Anhui Province and their geological significance.[J]. Earth Science Frontiers, 2010, 17(2): 170-177.

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Rockforming and oreforming ages of the Baizhangyan tungstenmolybdenum ore deposit in Qingyang, Anhui Province and their geological significance.

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