Jinding, Lanping

Yunnan, China

Main commodities: Zn Pb Ag
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The Jinding / Lanping sandstone hosted Zn-Pb-Ag deposit lies within the Tethyan-Himalayan tectonic domain on the Yangtze Platform of Yunnan, China

Resources have been stated at 130 Mt @ 8% Zn, 1.4% Pb, 10 g/t Ag,
        including a drilled high grade core of 13 Mt @ 14% Zn, 1.5% Pb.
Reports (2006) also suggest a global resource of more than 200 Mt @ 6.1% Zn, 1.3% Pb

The deposit is hosted in Cretaceous and Tertiary terrestrial rocks, and mainly occurs in the Jinding dome structure, as a tabular orebodies within breccia-bearing sandstones of the autochthonous Palaeocene Yunlong Formation and in the overlying sandstones of the allochthonous Early Cretaceous Jingxing Formation.

The crosscutting form of the orebodies, presence of hangingwall alteration, and replacement and open-space filling textures all indicate an epigenetic origin.

The formation of the Jinding Zn-Pb deposit is interpreted to have been related to a period of major continental crust movement during the collision of the Indian and Eurasian Plates. Westward verging thrusts and dome structure were successively developed in the Palaeocene sedimentary rocks in the ore district, with Zn­Pb mineralisation appearing to havebeen introduced during the early stage of the doming processes.

Ore occurs in two forms, namely:

i). Upper orebodies - sandstone hosted concordant mineralisation within the Palaeocene argillaceous, grey sandstone with common dark grey limestone fragments, and

ii). Lower orebodies - discordant orebodies within a sequence of thrust-fault growth related olistoliths, sandstones and breccia-sandstones which are characterised by included blocks if limestone from <1, to hundreds of metres across. These two ore bearing units overlie a gypsum and celestite bearing purple siltstone, sandstone and arkose unit with intercalated fossiliferous dark and sandy limestone. The ore zone is overturned and lies within a thrust package, overlain by allochthonous, overturned, Cretaceous, Jurassic and Triassic mudstones, siltstones, fine feldspathic sandstones and limestones. As well as the Palaeocene sandstones, according to some sources, ore also occurs within Cretaceous sandstone at the base of the allochthon, but below the Jurassic sediments, and immediately above the thrust which bounds the autochthonous hosts to the main mass of the ore.

Two ore types occur in both of these ore zones, namely:

i). disseminated mineralisation where the sulphides have replaced the calcite cement of the sandstones, representing the most important ore, predominantly in the upper ore zone, and

ii). breccia mineralisation which is found in the pores and matrix of limestone or argillaceous limestone breccias, with local replacement of both matrix and fragments producing massive sulphide. The second type is found mainly in the lower orebodies.

The most recent source geological information used to prepare this summary was dated: 2007.    
This description is a summary from published sources, the chief of which are listed below.
© Copyright Porter GeoConsultancy Pty Ltd.   Unauthorised copying, reproduction, storage or dissemination prohibited.

  References & Additional Information
   Selected References:
Chi G, Xue C, Lai J and Qing H,  2007 - Sand Injection and Liquefaction Structures in the Jinding Zn-Pb Deposit, Yunnan, China: Indicators of an Overpressured Fluid System and Implications for Mineralization: in    Econ. Geol.   v102 pp 739-743
Chunji Xue, Rong Zeng, Shuwen Liu, Guoxiang Chi, Hairuo Qing, Yuchuan Chen, Jianmin Yang and Denghong Wang  2007 - Geologic, fluid inclusion and isotopic characteristics of the Jinding Zn-Pb deposit, western Yunnan, South China: A review : in    Ore Geology Reviews   v31 pp 337-359
Deng, J., Wang, C., Bagas, L., Selvaraja, V., Jeon, H., Wu, B. and Yang, L.,  2017 - Insights into ore genesis of the Jinding Zn-Pb deposit, Yunnan Province, China: Evidence from Zn and in-situ S isotopes: in    Ore Geology Reviews   v.90, pp. 943-957.
Guoxiang Chia, Hairuo Qinga, Chunji Xueb and Rong Zeng   2006 - Modeling of fluid pressure evolution related to sediment loading and thrust faulting in the Lanping basin: Implications for the formation of the Jinding Zn-Pb deposit, Yunnan, China: in    J. of Geochemical Exploration   v89 pp 57-60
Hou, Z. and Cook, N.,  2009 - Metallogenesis of the Tibetan collisional orogen: A review and introduction to the special issue: in    Ore Geology Reviews   v.36, pp. 2-24.
Leach, D.L., Song, Y.-C. and Hou, Z.-Q.,  2017 - The world-class Jinding Zn-Pb deposit: ore formation in an evaporite dome, Lanping Basin, Yunnan, China: in    Mineralium Deposita   v.52, pp. 281-296.
Liu J, Wang A, Xia H, Zhai Y, Gao L, Xiu Q, Zhang Z, Zhao Z and Cao D,  2010 - Cracking mechanisms during galena mineralization in a sandstone-hosted lead-zinc ore deposit: case study of the Jinding giant sulfide deposit, Yunnan, SW China: in    Mineralium Deposita   v.45 pp. 567-582
Song, Y., Hou, Z., Xue, C. and Huang, S.,  2020 - New Mapping of the World-Class Jinding Zn-Pb Deposit, Lanping Basin, Southwest China: Genesis of Ore Host Rocks and Records of Hydrocarbon-Rock Interaction: in    Econ. Geol.   v.115, pp. 981-1002.
Tang, Y.-Y., Bi, X.-W., Fayek, M., Hu, R.-Z., Wu, L.-Y., Zou, Z.-C., Feng, C.-X. and Wang, X.-S.,  2014 - Microscale sulfur isotopic compositions of sulfide minerals from the Jinding Zn-Pb deposit, Yunnan Province, Southwest China: in    Gondwana Research   v.26, pp. 594-607.
Xue, C., Chi, G. and Fayek, M.,  2015 - Micro-textures and in situ sulfur isotopic analysis of spheroidal and zonal sulfides in the giant Jinding Zn-Pb deposit, Yunnan, China: Implications for biogenic processes: in    J. of Asian Earth Sciences   v.103, pp. 288-304.
Yalikun, Y., Xue, C.-J., Dai, Z.-J., Chi, G.-X., Fayek, M. and Symons, D.,  2018 - Microbial structures and possible bacterial sulfide fossils in the giant Jinding Zn-Pb deposit, Yunnan, SW-China: Insights into the genesis of Zn-Pb sulfide mineralization: in    Ore Geology Reviews   v.92, pp. 61-72.

Porter GeoConsultancy Pty Ltd (PorterGeo) provides access to this database at no charge.   It is largely based on scientific papers and reports in the public domain, and was current when the sources consulted were published.   While PorterGeo endeavour to ensure the information was accurate at the time of compilation and subsequent updating, PorterGeo takes no responsibility what-so-ever for inaccurate or out of date data, information or interpretations.

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