Journal of Jilin University(Earth Science Edition) ›› 2019, Vol. 49 ›› Issue (5): 1285-1300.doi: 10.13278/j.cnki.jjuese.20180089

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Geological Characteristics and Diagenetic Age of Ore-Bearing Rock of Taojiang Muguayuan Tungsten Deposit in Hunan Province

Li Hongying1, Yang Lei2, Chen Jianfeng3   

  1. 1. Institute of Mineral Resources, CAGS/MLR Key Laboratory of Metallogeny and Mineral Assessment, Beijing 100037, China;
    2. Research Institute, CNOOC, Beijing 100027, China;
    3. Hunan Institute of Geology Survey, Changsha 410116, China
  • Received:2018-04-28 Published:2019-10-10
  • Supported by:
    Supported by National Natural Science Foundation of China (41602074, 41430314); Project of China Geological Survey (DD20190606, DD20160124) and Special Fund for Basic Scientific Research Business of Central Public Research Insititutes (K1408,YYWF201510)

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Abstract: The Muguayuan W deposit in Taojiang County of Hunan Province is a newly discovered large W deposit in the west part of the Jiangnan massif, which is hosted in the Sanxianba granite porphyry. The main ore-forming types include disseminated, veinlet, and reticular types.The major alteration types of wall rocks are comprise of potassium alteration, silicification, sericitization, pyritization, and carbonation etc., typical alteration characteristics of porphyry W deposits. The different mineralizing types of molybdenum-bearing samples were selected for precise Re-Os dating, and the model ages are from 228 to 223 Ma, indicating that the deposit was formed in the Late Triassic. The Re content of molybdenite is (70-181)×10-6, indicating that they were derived from mixed crust and mantle sources. The metallogenic environment was the post collision in the period of Late Indosinian.

Key words: Muguayuan tungsten deposit, Re-Os dating, geological features of ore deposit, ore-bearing rock body, Hunan Province

CLC Number: 

  • P618.67
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