|Table of Contents|

Bifurcate Magma Conduit of Jinchuan Super-large Ni-Cu-PGE Sulfide Deposit in Gansu, China and Its Implications for Deep Ore Prospecting(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2023年第05期
Page:
1049-1062
Research Field:
庆贺汤中立院士从事地质工作七十周年专辑
Publishing date:

Info

Title:
Bifurcate Magma Conduit of Jinchuan Super-large Ni-Cu-PGE Sulfide Deposit in Gansu, China and Its Implications for Deep Ore Prospecting
Author(s):
SONG Xie-yan1;  KANG Jian1;  LONG Ting-mao1; 2;  LI Xiao-dong1; 2;  WANG Yong-cai3;  LI De-xian3;  AI Qi-xing3;  LU Jian-quan3
(1. State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, Guizhou, China; 2. University of Chinese Academy of Sciences, Beijing 101408, China; 3. Jinchuan Group Co., Ltd., Jinchang 737100, Gansu, China)
Keywords:
small intrusion forming large deposit;  Ni-Cu-PGE sulfide deposit;  bifurcate magma conduit;  post-mineralization fault;  deep ore prospecting;  Gansu
PACS:
P611
DOI:
10.19814/j.jese.2023.05063
Abstract:
After more than 50 years mining activities, deep prospecting for new orebodies rich in Ni and Cu become more and more important in Jinchuan super-large Ni-Cu-PGE sulfide deposit of Gansu, China. The 4 major orebodies of Jinchuan deposit are not connected each other, and location patterns of the orebodies have been affected by movement of the faults. On the basis of the studies on geology and geochemistry of these orebodies and the associated faults of Jinchuan deposit, the bifurcate magma conduit during the formation of Jinchuan deposit was identified. Branches of the bifurcate magma conduit develop and form the four major orebodies successively. Therefore, each individual orebody is formed by following a time sequence and has distinguishable features. The influence of post-mineralization faults on the spatial distribution of Jinchuan pluton and ore bodies was discussed; subsequently, potential and deep prospecting targets were also discussed.

References:

[1] 金川集团股份有限公司.甘肃省金昌市白家嘴子矿区镍铜矿资源储量核实报告[R].金昌:金川集团股份有限公司,2017.
Jinchuan Group Co.,Ltd.Reserves of Ni-Cu Sulfide Deposit in Baijiazuizi Mining District,Jinchang,Gansu Province[R].Jinchang:Jinchuan Group Co.,Ltd.,2017.
[2] 宋谢炎.岩浆硫化物矿床研究现状及重要科学问题[J].矿床地质,2019,38(4):699-710.
SONG Xie-yan.Current Research Status and Important Issues of Magmatic Sulfide Deposits[J].Mineral Deposits,2019,38(4):699-710.
[3] 汤中立,李文渊.金川铜镍硫化物矿床(含铂)矿床成矿模式及地质对比[M].北京:地质出版社,1995.
TANG Zhong-li,LI Wen-yuan.Comparing Formation Model and Geology of Jinchuan Cu-Ni(Pt)Sulfide Deposit[M].Beijing:Geological Publishing House,1995.
[4] 汤中立,徐 刚,王泸文,等.小岩体成矿体系[J].矿物学报,2011,31(增):397-398.
TANG Zhong-li,XU Gang,WANG Lu-wen,et al.Ore-forming System in Small Intrusive Bodies[J].Acta Mineralogica Sinica,2011,31(S):397-398.
[5] 汤中立,闫海卿,焦建刚.中国岩浆硫化物矿床新分类与小岩体成矿作用[J].矿床地质,2006,25(1):1-9.
TANG Zhong-li,YAN Hai-qing,JIAO Jian-gang.New Classification of Magmatic Sulfide Deposits in China and Ore-forming Processes of Small Intrusive Bodies[J].Mineral Deposits,2006,25(1):1-9.
[6] CHAI G,NALDRETT A J.Characteristics of Ni-Cu-PGE Mineralization and Genesis of the Jinchuan Deposit,Northwest China[J].Economic Geology,1992,87(6):1475-1495.
[7] LI C S,XU Z H,DE WAAL S A,et al.Compositional Variations of Olivine from the Jinchuan Ni-Cu Sulfide Deposit,Western China:Implications for Ore Genesis[J].Mineralium Deposita,2004,39(2):159-172.
[8] RIPLEY E M,SARKAR A,LI C S.Mineralogic and Stable Isotope Studies of Hydrothermal Alteration at the Jinchuan Ni-Cu Deposit,China[J].Economic Geo-logy,2005,100(7):1349-1361.
[9] LI X H,SU L,CHUNG S L,et al.Formation of the Jinchuan Ultramafic Intrusion and the World's Third Largest Ni-Cu Sulfide Deposit:Associated with the ～825 Ma South China Mantle Plume?[J].Geoche-mistry,Geophysics,Geosystems,2005,6(11):2005-GC001006.
[10] YANG S H,QU W J,TIAN Y L,et al.Origin of the Inconsistent Apparent Re-Os Ages of the Jinchuan Ni-Cu Sulfide Ore Deposit,China:Post-segregation Diffusion of Os[J].Chemical Geology,2008,247(3/4):401-418.
[11] CHEN L M,SONG X Y,KEAYS R R,et al.Segregation and Fractionation of Magmatic Ni-Cu-PGE Sulfides in the Western Jinchuan Intrusion,Northwestern China:Insights from Platinum Group Element Geochemistry[J].Economic Geology,2013,108(8):1793-1811.
[12] DUAN J,LI C S,QIAN Z Z,et al.Geochronological and Geochemical Constraints on the Petrogenesis and Tectonic Significance of Paleozoic Dolerite Dykes in the Southern Margin of Alxa Block,North China Craton[J].Journal of Asian Earth Sciences,2015,111:244-253.
[13] KANG J,SONG X Y,LONG T M,et al.Lithologic and Geochemical Constraints on the Genesis of a Newly Discovered Orebody in the Jinchuan Intrusion,NW China[J].Economic Geology,2022,117(8):1809-1825.
[14] SONG X Y,DANYUSHEVSKY L V,KEAYS R R,et al.Structural,Lithological,and Geochemical Constraints on the Dynamic Magma Plumbing System of the Jinchuan Ni-Cu Sulfide Deposit,NW China[J].Mineralium Deposita,2012,47(3):277-297.
[15] SONG X Y,KEAYS R R,ZHOU M F,et al.Siderophile and Chalcophile Elemental Constraints on the Origin of the Jinchuan Ni-Cu-(PGE)Sulfide Deposit,NW China[J].Geochimica et Cosmochimica Acta,2009,73(2):404-424.
[16] SONG X Y,ZHOU M F,WANG C Y,et al.Role of Crustal Contamination in Formation of the Jinchuan Intrusion and Its World-class Ni-Cu-(PGE)Sulfide Deposit,Northwest China[J].International Geological Review,2006,48(12):1113-1132.
[17] 甘肃省地质矿产勘查开发局第六地质队.白家咀子硫化铜镍矿床地质[M].北京:地质出版社,1984.
The Sixth Geological Team of Gansu Provincial Bureau of Geology and Mineral Exploration & Development.Geology of the Baijiaozuizi Cu-Ni Sulfide Deposit[M].Beijing:Geological Publishing House,1984.
[18] ZHANG M J,KAMO S L,LI C S,et al.Precise U-Pb Zircon-baddeleyite Age of the Jinchuan Sulfide Ore-bearing Ultramafic Intrusion,Western China[J].Mi-neralium Deposita,2010,45(1):3-9.
[19] TANG Z L,SONG X Y,SU S G.Ni-Cu Deposits Related to High-Mg Basaltic Magma,Jinchuan,Western China[M]∥LI C S,RIPLEY E M.New Developments in Magmatic Ni-Cu and PGE Deposits.Beijing:Geological Publishing House,2009:121-140.
[20] 李士彬,宋谢炎,胡瑞忠,等.甘肃金川Ⅱ号岩体岩相学特征及分离结晶过程探讨[J].岩石学报,2007,23(10):2553-2560.
LI Shi-bin,SONG Xie-yan,HU Rui-zhong,et al.Petrographic Features of Segment Ⅱ of the Jinchuan Intrusion,Gansu,and Its Fractional Crystallization[J].Acta Petrologica Sinica,2007,23(10):2553-2560.
[21] NALDRETT A J.Magmatic Sulphide Deposit:Geology,Geochemistry,and Exploration[M].New York:Springer,2004.
[22] LONG T M,SONG X Y,KANG J,et al.Genesis of No.2 Orebody of the Jinchuan Magmatic Ni-Cu-(PGE)Sulfide Deposit,NW China:New Constraints from the Newly Discovered Deep Extension[J].Mine-ralium Deposita,2023,58:1317-1332.
[23] 焦建刚,汤中立,闫海卿,等.金川铜镍硫化物矿床中富铜矿石铂族元素特征及矿床成因[J].西北地质,2012,45(4):242-253.
JIAO Jian-gang,TANG Zhong-li,YAN Hai-qing,et al.PGE Characteristics of Cu-rich Ores in the Jinchuan Cu-Ni Sulfide Deposit and Its Genesis[J].Northwestern Geology,2012,45(4):242-253.
[24] DUAN J,LI C S,QIAN Z Z,et al.Multiple S Isoto-pes,Zircon Hf Isotopes,Whole-rock Sr-Nd Isotopes,and Spatial Variations of PGE Tenors in the Jinchuan Ni-Cu-PGE Deposit,NW China[J].Mineralium Deposita,2016,51(4):557-574.
[25] SU S G,LI C S,ZHOU M F,et al.Controls on Variations of Platinum-group Element Concentrations in the Sulfide Ores of the Jinchuan Ni-Cu Deposit,Western China[J].Mineralium Deposita,2008,43(6):609-622.
[26] TONNELIER N J.Geology and Genesis of The Jinchuan Ni-Cu-(PGE)Deposit,China[D].Sudbury:Laurentian University,2010.
[27] 宋谢炎,肖家飞,朱 丹,等.岩浆通道系统与岩浆硫化物成矿研究新进展[J].地学前缘,2010,17(1):153-163.
SONG Xie-yan,XIAO Jia-fei,ZHU Dan,et al.New Insights on the Formation of Magmatic Sulfide Deposits in Magma Conduit System[J].Earth Science Frontiers,2010,17(1):153-163.
[28] LIGHTFOOT P C,KEAYS R R,EVANS-LAMSWOOD D,et al.S Saturation History of Nain Plutonic Suite Mafic Intrusions:Origin of the Voisey's Bay Ni-Cu-Co Sulfide Deposit,Labrador,Canada[J].Mineralium Deposita,2012,47:23-50.
[29] SONG X Y,DENG Y F,XIE W,et al.Prolonged Basaltic Magmatism and Short-lived Magmatic Sulfide Mineralization in Orogenic Belts[J].Lithos,2021,390/391:106114.
[30] DENG Y F,SONG X Y,XIE W,et al.The Role of External Sulfur in Triggering Sulfide Immiscibility at Depth:Evidence from the Huangshan-Jing'erquan Ni-Cu Metallogenic Belt,NW China[J].Economic Geology,2022,117(8):1867-1879.
[31] 宋谢炎,邓宇峰,颉 炜,等.新疆黄山—镜儿泉铜镍硫化物成矿带岩浆通道成矿特征及其找矿意义[J].矿床地质,2022,41(6):1108-1123.
SONG Xie-yan,DENG Yu-feng,XIE Wei,et al.Ore-forming Processes in Magma Plumbing Systems and Significances for Prospecting of Huangshan-Jing'er-quan Ni-Cu Sulfide Metallogenetic Belt,Xinjiang,NW China[J].Mineral Deposits,2022,41(6):1108-1123.
[32] 苏尚国,汤中立,周 岱.金川含矿超镁铁岩侵入体侵位序列[J].地学前缘,2010,17(2):118-126.
SU Shang-guo,TANG Zhong-li,ZHOU Dai.Empla-cement Sequence in the Jinchuan Sulfide Ore-bearing Ultramafic Intrusion,Western China[J].Earth Scien-ce Frontiers,2010,17(2):118-126.
[33] 闫海卿,王 强,胡彦强,等.金川铜镍硫化物岩浆矿床前锋岩浆与岩浆通道[J].中国地质,2013,40(3):807-819.
YAN Hai-qing.WANG Qiang,HU Yan-qiang,et a1.Striker Magma and Magma Channel in the Jinchuan Copper-nickel Sulfide Magmatic Deposit[J].Geology in China,2013,40(3):807-819.
[34] SAUMUR B M,CRUDEN A R,BOUTELIER D.Sul-fide Liquid Entrainment by Silicate Magma:Implications for the Dynamics and Petrogenesis of Magmatic Sulfide Deposits[J].Journal of Petrology,2016,56(12):2473-2490.
[35] 宋谢炎,胡瑞忠,陈列锰.铜、镍、铂族元素地球化学性质及其在幔源岩浆起源、演化和岩浆硫化物矿床研究中的意义[J].地学前缘,2009,16(4):287-305.
SONG Xie-yan,HU Rui-zhong,CHEN Lie-meng.Geochemical Natures of Copper,Nickel and PGE and Their Significance for the Study of Origin and Evolution of Mantle-derived Magmas and Magmatic Sulfide Deposits[J].Earth Science Frontiers,2009,16(4):287-305.

Memo

Memo:
-
Last Update: 2023-10-15