YE Lin^1*, HU Yu-si^1,2, YANG Song-ping³, WEI Chen^1,2, YANG Xing-yu³, LI Zhen-li^1,2, AN Qi³, LU Mao-da³

(1. State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. No. 104 Geological Team, Bureau of Geology and Mineral Exploration and Development of Guizhou Province, Duyun 558003, China)

Abstract: Lead and zinc mineral resources are among  mostly short resources in China. The “Xiangxi-Qiandong Pb-Zn metallogenic belt” is an important Pb-Zn belt in China. Its part in Guizhou Province is called the “Qiandong metallogenic belt” in which Pb-Zn deposits (mineral occurrences) are widely distributed in clusters and zones. Due to limited researches on relevant geology and geochemistry, the Pb-Zn geological exploration in the Qiandong district is far away to the great success of the Pb-Zn exploration in the Xiangxi district. In the paper, we have summarized geological and geochemical characteristics of the Pb-Zn mineralization in the “Qiandong metallogenic belt” and discussed deficiencies of scientific researches on the Pb-Zn mineralization in this district. Combined with the research actualities of MVT Pb-Zn deposits, it is proposed that characteristics of the Pb-Zn mineralization in the Qiandong district are in accordance with those of MVT deposits, and the Qiandong district  is an ideal area  for studying MVT deposits in China. Moreover, the in-situ analytical techniques are applied to strengthen the comparison of geological and geochemical characteristics of the deposits, the studies of ore-forming material sources, ore-forming fluid sources, and isotopic dating, in order to reveal the nature and evolution of  ore-forming fluids systems in each deposit and in the district,  to establish a reasonable metallogenic model, to clarify the relationship between the regional structure and the evolution of fossil oil reservoir, and to discuss the geodynamic background of the Pb-Zn metallogeny in the Qiandong metallogenic belt. This study has not only highlighted the features of the MVT Pb-Zn mineralization in the Qiandong district, thus to promote the development of theories regarding to the MVT Pb-Zn mineralization and the super-enrichment of disperse elements, but also has provided fundamental theoretical basis for widening the thought of the Pb-Zn prospecting  in the Qiandong district.

Keywords: Pb-Zn mineralization; MVT Pb-Zn deposits; Research status; the Qiandong metallogenic belt; the Xiangxi－Qiandong Pb-Zn metallogenic belt