- 责任者：Liang Wei (School of the Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Hou Zengqian
- 刊名：Acta Petrologica Sinica
- 出版年：2013
- 卷期：29(11)
- 关键词：铅锌矿床 ; lead-zinc deposit ; 银矿 ; silver ores ; 锑矿 ; antimony ores ; 西藏 ; Tibet
- 页码：p.3828-3842
- 图表：12 illus., 6 tables, 61 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
Zhaxikang polymetallic base metal deposit is characterized by multiple periods and stages of metallogenesis. Combining the study of regional metallogenie belt with the feature of typical ore texture and structure, variation of Fe content in sphalerite, the character of elements zonation in lateral and vertical direction, as well as the results of fluid inclusion thermometry, we summarize the remobilization and overprinting metalllogenesis of Zhaxikang as follows： There had been a coarse-grained sphalerite and galena oreshoot before Tethys Himalaya Sb （ Au ） mineralization originated. In post-collisional stage, the crust of Tibet experienced extension and intensity of igneous activity. Geothermal water forming from Meteoric water driven by igneous extracted Sb from stratum around, which formed regional Sb-bearing fluid. The Sb-bearing fluid flowed through Zhaxikang district, and overprinted the former oreshoot which was an effective geochemical barrier. Then the Sb-bearing fluid and replaced coarse-grained galena and sphaerite, from which removed out lead and zinc to form newly mixing fluid. Additionally, this newly formed fluid migrated along NS direction fault system and crystallized in extension space with form of stockwork, vein and miarolitic type. Zn still in forms of sphalerite with Fe content down, and Pb in forms of sulfosalt with Sb and/or Ag. Finally, stibnite was to crystallize as Pb precipitated completely. To sum up, Zhaxikaug polymetallie base metal deposit was a typical but non-unique remobilization and overpriting ore deposit in Tibet Plateau continent to continent collisional orogenesis and metallogenesis.