Bainiuchang super-large silver-polymetallic ore deposit related to granitic magmatism in Mengzi, Yunnan

  • Liu Ji-shun  (刘继顺)Email author
  • Zhang Hong-pei  (张洪培)
  • Ouyang Yu-fei  (欧阳玉飞)
  • Zhang Cai-hua  (张彩华)


Bainiuchang silver-polymetallic ore deposit is located in the southeast Yunnan tin-polymetallic metallogenic belt. The probable reserves and inferred resources of the deposit are of 6 470 t Ag and 1.10 Mt Pb and 1.72 Mt Zn and 86 kt Sn. Orebodies of the deposit occur in clastic-carbonate rocks of Tianpeng Formation and Longha Formation of the middle Cambrian System above the Bainiuchang concealed granite of the late Yanshan period. The concealed granite has the characteristics of tin-bearing granites. Abundance of the mineralization elements Sn, Cu, Zn, Pb, Ag and Sb is high in the granitic rocks. Sulphur isotope data of the metal sulphides indicate that most sulphur is derived from the magmas. The ores are similar in rare earth element(REE) patterns to the granitic rocks. The granitic magma activity results in ore-bearing structures. Rocks of the Middle Cambrian System above the concealed intrusion suffer from skarnization, hornfelsing, marbleization, siliconizing and carbonatization. The mineralization elements Sn, Cu, Zn, Pb, Ag and Sb successively appear from the top of the granite to surrounding rocks. These evidences indicate that the granitic magmatism is the principal mineralization factor. The opinion that the south Bainiuchang ore field and the north Awei ore block are tin and copper potential exploration areas was put forward and was verified by drilling tests.

Key words

Bainiuchang super-large silver-polymetallic deposit granite granitic-porphyry tin ore 


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  1. [1]
    LUO Jun-lie. The minerogenetic characteristics of super-large deposits in Yunnan[J]. Yunnan Geology, 1995, 14(4): 276–80. (in Chinese)Google Scholar
  2. [2]
    CHEN Xue-ming, LIN Zong, XIE Fu-chang. Geological and geochemical characteristics of the Bainiuchang super-large silver polymentallic deposit of superimposed mineralization, Yunnan Province[J]. Scientia Geologica Sinica, 1998, 33(1): 115–124. (in Chinese)Google Scholar
  3. [3]
    ZHOU Jian-ping, XU Ke-qin, HUA Ren-min, et al. Characteristics and genesis of exhalative sedimentary massive sulfides in southeastern Yunnan Province[J]. Acta Mineralogical Sinica, 1998, 18(2):158–168. (in Chinese)Google Scholar
  4. [4]
    DENG Jun, CHEN Xue-ming, RAO Yi-qun, et al. Two kinds of compaction fluid systems of the Nanling area[J]. Geoscience, 2004, 18(1): 1–7. (in Chinese)Google Scholar
  5. [5]
    HUA Ren-min, ZHU Jin-chu, ZHAO Yi-ying, et al. Preliminary studying on metallogenetic series of nonferrous metal deposits in Youjiang fold belt[J]. Geological Journal of China Universities, 1997, 3(2): 183–190. (in Chinese)Google Scholar
  6. [6]
    ZHU Chao-hui, ZHANG Qian, HE Yu-liang. The characteristics of mineralizing elements of the Bainiuchang silver Polymetallic deposit in southeastern Yunnan[J]. Bulletin of Mineralogy, Petrology and Geochemistry, 2005, 24(4): 327–332. (in Chinese)Google Scholar
  7. [7]
    LIU Ji-shun, GAO Zhen-guan, DENG Gong-quan, et al. One potential superlarge Pb-Zn ore occurrence with Himalayan thermal brine genesis—Wuqia Region, Xinjiang, China[J]. Journal of Central South University of Technology, 2002, 9(1): 41–46.CrossRefGoogle Scholar
  8. [8]
    YANG Shi-yu. Characteristics of distribution in time and its metallogenic model[J]. Scientia Geologica Sinica, 1990(2): 137–148. (in Chinese)Google Scholar
  9. [9]
    QIN De-xian, TAN Shu-cheng, FAN Zhu-guo, et al. Geotectonic evolution and tin-polymentallic metallogenesis in Gejiu-Dachang area[J]. Acta Minerralogica Sinica, 2004, 24(2): 117–123. (in Chinese)Google Scholar
  10. [10]
    GAO Zi-ying. On the Mineralization of Bainiuchang Silver Polymetallic Deposit in Mengzi[M]. Kunming: Yunnan Science and Technology Press, 1998. (in Chinese)Google Scholar
  11. [11]
    LIU Ji-shun, ZHANG Hong-pei, FANG Wei-xuan et al. Problems pertaining to Bainiuchang silver, polymetallic deposit in Mengzi country, Yunan[J]. Engineering Science, 2005, (Suppl.): 238–244. (in Chinese)Google Scholar
  12. [12]
    BREITER K, SOKOLOVA M, SOKOL A. Geochemical speciabization of the tin-bearing granitoid massifs of NW Bohemia[J]. Mineralium Deposita, 1991, 26(4): 298–306CrossRefGoogle Scholar
  13. [13]
    BAY G E, WEBSTER I C L, BALLANTYNE S B. et al. The geochemistry of three Tin-bearing skarns and their related platonic rocks, Atlin, northern British Cdumbia[J]. Economic Geology, 2000, 95(6): 1349–1365.Google Scholar
  14. [14]
    CHEN Jun, WANG He-nian. Geochemistry[M]. Beijing: Science Press, 2004. (in Chinese)Google Scholar
  15. [15]
    YU Chong-wen, TANG Yuan-jun, SHI Ping-fang, et al. Dynamical System of Mineralization in Gejiu tin Polymetallic Deposit[M]. Wuhan: China University of Geosciences Press, 1988. (in Chinese)Google Scholar
  16. [16]
    GUAN Rong-sheng. An approach of mineralization of granite mass in the structure tectonicmagmatic belt in southeast of Yunnan[J]. Journal of Minerology and Ptrology, 1991, 11(1): 92–101. (in Chinese)Google Scholar
  17. [17]
    LI Xi-ji, YANG Zhuang, SHI Lin, et al. Tin deposits of China[C]// SONG Shu-he, et al. Mineral Deposits of China. Beijing: Geological Publishing House, 2:105–188. (in Chinese)Google Scholar
  18. [18]
    EINAUDI M T, BURT D M. A special issue devoted to skarn deposits; Instruction—terrninology, classification, and composition of skarn deposits[J]. Bulletin of the Society of Economic Geologists, 1982, 77(4): 745–754.CrossRefGoogle Scholar
  19. [19]
    MEINERT L D. Application of skarn deposit zonation models to mineral exploration[J]. Exploration and Mining Geology, 1997(6): 195–208.Google Scholar

Copyright information

© Central South University Press, Sole distributor outside Mainland China: Springer 2007

Authors and Affiliations

  • Liu Ji-shun  (刘继顺)
    • 1
    Email author
  • Zhang Hong-pei  (张洪培)
    • 1
    • 2
  • Ouyang Yu-fei  (欧阳玉飞)
    • 1
  • Zhang Cai-hua  (张彩华)
    • 2
  1. 1.School of Geoscience and Environmental EngineeringCentral South UniversityChangshaChina
  2. 2.Mengzi Minning and Metallurgy Co. Ltd.YunnanChina

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