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Evidence for transforming mineralization of Baiguoyuan silver-vanadium deposit hosted in black shale in Hubei, China
Authors:Hanping Zhuang  Jialan Lu  Jiamo Fu  Jinzhong Liu  Chigang Ren  Degang Zou
Affiliation:(1) Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640 Guangzhou, China;(2) The 2nd Department of Physics, Fudan University, 200433 Shanghai, China
Abstract:Baiguoyuan silver-vanadium deposit is generally thought to be of sedimentary-diagenetic origin. Based on the characteristics of barites, it is suggested that hydrothermal transformation has been involved in mineralization. The barites in black shale can be grouped into irregular ones which were formed during early diagenesis and tabular ones which were formed during late diagenesis. The tabular barites are replaced by pyrite and have formed a regular girdle around them. PlXE analysis states that Ag is greatly concentrated in pyrite replacement girdle. The girdle is the product of hydrothermal transformation. The transformation is one of the main mineralization stages of Baiguoyuan deposit.
Keywords:Baiguoyuan silver-vanadium deposit  barite  transformation
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