Geological characteristics and prospecting criteria of Tuanshan Au-Cu deposit in Kongquegou area of South Tianshan in Xinjiang
ZHANG Xiaoxing1,2, WANG Liang1,2, GAO Yongbao1,2, HUA Lipeng1,2, WANG Zilong1,2, LI Xiaodong1,2
1. Technology Innovation Center for Gold Ore Exploration, China Geological Survey, Shaanxi Xi'an 710100, China; 2. Xi'an Center of Mineral Resources Survey, China Geology Survey, Shaanxi Xi'an 710100, China
Abstract：Although the metallogenic geological conditions are superior in South Tianshan area of Xinjiang, the prospecting work has not achieved a great breakthrough. Tuanshan Au-Cu deposit was newly developed with medium potential resources in Kongquegou area of South Tianshan since new breakthroughs in critical mineral exploration were implemented. The geological environment, orebodies distribution, ore characteristics and genetic characteristics of Tuanshan Au-Cu deposit were expounded in detail on the basis of the comprehensive regional metallogenic regularity and the latest progress of ore prospecting. Tuanshan Au-Cu deposit is located in the tectonic superposition area of NWW Kongquegou faults and NE faults in late stage, and the ore-bearing strata is low-grade metamorphism sand in Kongquegou Formation of Upper Silurian. There are 15 mineralization alteration zones, and 13 ore bodies of Au and Au-Cu. The average grade of Au is 0.93 g/t, and the average grade of Cu is 0.66%, with the average thickness of 3.54 m. The genetic type belongs to a mediuin-low temperature hydrothermal gold-copper deposit, and there is a great potential for copper and gold exploration in deep through sorting out regional background, ore-controlling elements, geophysical and geochemical prospecting indicators. The research results expanded a new space for gold exploration in Kongquegou Formation of Upper Silurian and could provide some references for regional mineral exploration.
[1] 李卫东. “十四五”新疆找矿成果报告[R].2024:10-35. Li W D.Report on Mineral Exploration Achievements in Xinjiang during the 14th Five Year Plan Period[R].2024:10-35. [2] 张朋,刘豹,杨晓飞,等.新疆阿尔金西段瓦石峡南锂铍稀有金属矿成矿背景与勘查进展[J].中国地质调查,2024,11(3):17-24. Zhang P,Liu B,Yang X F,et al.Metallogenic background and exploration progress of the southern Waishixia lithium-beryllium rare metal deposit in the western Altyn Tagh of Xinjiang Province[J].Geological Survey of China,2024,11(3):17-24. [3] 杨有星,高永进,周新桂,等.新疆地区公益性油气调查进展与主要成果[J].中国地质调查,2023,10(3):1-15. Yang Y X,Gao Y J,Zhou X G,et al.Progress and main achievements of public welfare oil and gas survey in Xinjiang[J].Geological Survey of China,2023,10(3):1-15. [4] 王成辉,王登红,刘善宝,等.战略新兴矿产调查工程进展与主要成果[J].中国地质调查,2022,9(5):1-14. Wang C H,Wang D H,Liu S B,et al.Progresses and main achievements on strategic emerging minerals survey project[J].Geological Survey of China,2022,9(5):1-14. [5] 李猛,胡朝斌,查显锋,等.新疆若羌县阿确墩地区1:5万红土岭等四个图幅矿产地质调查工作主要进展及成果[J].中国地质调查,2021,8(5):64-73. Li M,Hu C B,Zha X F,et al.Main progress and achievements of four 1:50 000 mineral geological survey sheets (Hongtulin Temple sheet and others) of Aquedun area of Ruoqiang County in Xinjiang Province[J].Geological Survey of China,2021,8(5):64-73. [6] Xu L J,Liu S A. Uncovering the redox state and S species of subduction zone fluids from Zn isotope systematics of eclogites in northern Qilian and southwestern Tianshan[J].Lithos,2023,436-437:106979. [7] Wang Y N,Zhang J,Huang X,et al.Cenozoic exhumation of the Tianshan as constrained by regional low-temperature thermochronology[J].Earth-Science Reviews,2023,237:104325. [8] 闫立志,苏本勋,王静,等.板片俯冲过程中Co、Ni的分布及迁移特征——以西南天山为例[J].岩石学报,2023,39(4):1203-1216. Yan L Z,Su B X,Wang J,et al.Distribution and transfer of Co and Ni during slab subduction:A case study of Southwest Tianshan[J].Acta Petrologica Sinica,2023,39(4):1203-1216. [9] 李皓东,周建波,李功宇,等.南天山—北山—索伦—长春缝合带的性质与演化[J].地质论评,2022,68(3):797-816. Li H D,Zhou J B,Li G Y,et al.Nature and evolution of the South Tianshan Mountains-Beishan Mountains-Solonker-Changchun Suture[J].Geological Review,2022,68(3):797-816. [10] 尼加提·阿布都逊,木合塔尔·扎日,贾晓亮.新疆南天山东段早石炭世—早二叠世花岗岩类及其对南天山洋盆闭合时间的约束[J].现代地质,2016,30(2):263-273. Nijat A,Muhtar Z,Jia X L.Geological characteristics of middle-late Paleozoic granitoid plutons in the east section of Chinese South Tianshan and its constraints to the closure time of South Tianshan Ocean[J].Geoscience,2016,30(2):263-273. [11] 江拓. 南天山洋的构造属性、闭合时限及俯冲极性研究[D].北京:中国科学院大学,2015. Jiang T.The Geodynamic Setting,Closure Time and Subduction Polarity of the South Tianshan Ocean[D].Beijing:University of Chinese Academy of Sciences,2015. [12] 冯乾文. 复杂造山带多尺度构造变形的观测方法——来自南天山库米什地区研究的启示[J].地质通报,2023,42(10):1706-1717. Feng Q W.Technological approach of structural investigation of complex orogenic belts on multi-scales:Insights and experiences from Kumish region,South Tianshan,NW China[J].Geological Bulletin of China,2023,42(10):1706-1717. [13] 蔡志慧,许志琴,何碧竹,等.东天山—北山造山带中大型韧性剪切带属性及形成演化时限与过程[J].岩石学报,2012,28(6):1875-1895. Cai Z H,Xu Z Q,He B Z,et al.Age and tectonic evolution of ductile shear zones in the eastern Tianshan-Beishan orogenic belt[J].Acta Petrologica Sinica,2012,28(6):1875-1895. [14] 张晓星,白兆华,王斌,等.南天山孔雀沟金矿地质特征及找矿标志[J].新疆地质,2023,41(S1):27. Zhang X X,Bai Z H,Wang B,et al.Geological characteristics and prospecting indicators of the Kongquegou gold deposit in the southern Tianshan Mountains[J].Xinjiang Geology,2023,41(S1):27. [15] 郎朋林,付丽娟,齐松,等.南天山库米什地区孔雀沟岩体年代学、岩石成因及地质意义[J].黄金,2023,44(10):63-70. Lang P L,Fu L J,Qi S,et al.Geochronology,petrogenesis and geological significance of Kongquegou in Kumishi area,southern Tianshan[J].Gold,2023,44(10):63-70. [16] 陈博,侯泉林,冯宏业,等.新疆南天山阿沙哇义金矿床的成因与找矿启示:来自流体和硫化物成分的限定[J].岩石学报,2019,35(7):2086-2104. Chen B,Hou Q L,Feng H Y,et al.Fluid and sulfide component constraints on the genesis and prospecting implications of the Ashawayi gold deposit,South Tianshan,Xinjiang,NW China[J].Acta Petrologica Sinica,2019,35(7):2086-2104. [17] 晁会霞,杨兴科,姚卫华,等.南天山东段梧南金矿区构造变形特征与成矿模式分析[C]//2017中国地球科学联合学术年会论文集(四十九)——专题102:大火成岩省与资源环境响应、专题103:矿田构造与区域成矿. 北京:中国和平音像电子出版社,2017:17-18. Chao H X,Yang X K,Yao W H,et al.Structural deformation characteristics and ore-forming model analysis of the Wunan gold deposit in the eastern section of the southern Tian Mountains[C]//China Earth Science Joint Academic Annual Conference.Beijing,2017:17-18. [18] 张雪冰. 新疆吐鲁番市高昌区乌尊布拉克一带金多金属矿矿床成因与成矿规律研究[R].2024:15-20. Zhang X B.Genesis of Wuzunbulake Gold Polymetallic Deposits in the Gaochang District,Turpan City,Xinjiang[R].2024:15-20. [19] Tang H J,Deng Z,Zhong S H,et al.Geochemistry and Sr-Nd-Hf-O isotopes of ore-bearing plutons from the Yundukala Au-Cu-Co deposit,East Junggar,Xinjiang,Northwest China:Implications for petrogenesis and tectonic setting[J].Ore Geology Reviews,2023,153:105274. [20] Zhao Z H,Wang Q,Xiong X L,et al.Stagnated eclogitic slab-related shoshonitic series volcanic rocks in West Tianshan,Xinjiang,China:insights from Li-B-Sr-Nd-Hf-Pb isotope and trace element compositions[J].Lithos,2022,422-423:106724. [21] Cao Y T.Origin of paratacamite in the Kuqa Basin,Xinjiang,China:Defined by Cu isotope values[J].Chemical Geology,2022,602:120902. [22] Zhang W,Leng C B,Zhang X C,et al.Petrogenesis of the Seleteguole granitoids from Jinhe county in Xinjiang (West China):implications for the tectonic transformation of Northwest Tianshan[J].Lithos,2016,256-257:148-164. [23] Zhang Z C,Zhou G,Kusky T M,et al.Late Paleozoic volcanic record of the eastern Junggar terrane,Xinjiang,northwestern China:major and trace element characteristics,Sr-Nd isotopic systematics and implications for tectonic evolution[J].Gondwana Research,2009,16(2):201-215. [24] Wu H X,Zhang F Q,Dilek Y,et al.Mid-Neoproterozoic collision of the Tarim Craton with the Yili-Central Tianshan Block towards the final assembly of Supercontinent Rodinia:a new model[J].Earth-Science Reviews,2022,228:103989. [25] He Z Y,Wang B,Nachtergaele S,et al.Long-term topographic evolution of the Central Tianshan (NW China) constrained by low-temperature thermochronology[J].Tectonophysics,2021,817:229066. [26] 邓小华,吴昌志,吴艳爽,等.东天山印支期矿床地质特征、成因类型及成矿规律[J].地球科学与环境学报,2023,45(3):590-621. Deng X H,Wu C Z,Wu Y S,et al.Geological characteristics,genetic types and metallogenic regularity of Indosinian deposits in East Tianshan,China[J].Journal of Earth Sciences and Environment,2023,45(3):590-621. [27] 张晓星,白兆华,华利鹏,等.新疆孔雀沟—梧桐沟金矿重点调查区调查评价[R].2023:28-66. Zhang X X,Bai Z H,Hua L P,et al.Investigation and Evaluation of Key Investigation Area of Kongquegou Wutong Gold Deposit in Xinjiang[R].2023:28-66. [28] Şengör A M C,Natal'in B A,Burtman V S.Evolution of the Altaid tectonic collage and Palaeozoic crustal growth in Eurasia[J].Nature,1993,364(6435):299-307. [29] Chen Y J,Pirajno F,Wu G,et al.Epithermal deposits in North Xinjiang,NW China[J].International Journal of Earth Sciences,2012,101(4):889-917. [30] 李志丹,薛春纪,吴越,等.南天山主要矿床成矿系列:基本特征和时空分布[J].矿床地质,2012,31(增刊1):13-14. Li Z D,Xue C J,Wu Y,et al.Main metallogenic series of mineral deposits in the southern Tianshan Mountains:Basic characteristics and temporal and spatial distribution[J].Mineral Deposits,2012,31(S1):13-14. [31] 张连昌,董志国,陈博,等.东天山重要成矿区带、成矿系统与成矿规律[J].地球科学与环境学报,2021,43(1):12-35. Zhang L C,Dong Z G,Chen B,et al.Ore-forming system and regularity of important metallogenetic belts in East Tianshan,China[J].Journal of Earth Sciences and Environment,2021,43(1):12-35.
2024, Vol. 11 
