湘东北长沙—平江断裂带关键金属钴的赋存状态与成矿规律

王智琳; 伍杨; 许德如; 邹少浩; 董国军; 彭尔柯; 宁钧陶; 康博

doi:10.11872/j.issn.1005-2518.2020.06.147

黄金科学技术 >

2020 , Vol. 28 >Issue 6: 779 - 785

DOI: https://doi.org/10.11872/j.issn.1005-2518.2020.06.147

稀贵金属前沿快讯

湘东北长沙—平江断裂带关键金属钴的赋存状态与成矿规律

王智琳 ,
伍杨 ,
许德如 ,
邹少浩 ,
董国军 ,
彭尔柯 ,
宁钧陶 ,
康博

展开

^1.中南大学地球科学与信息物理学院，有色金属成矿预测与地质环境监测教育部重点实验室，湖南长沙 410083
^2.东华理工大学省部共建核资源与环境国家重点实验室，江西南昌 330013
^3.湖南省地质矿产勘查开发局402队，湖南长沙 410004

王智琳（1984-），女，山西运城人，副教授，从事成因矿物学与矿床地球化学研究工作。wangzhilin1025@163.com

收稿日期: 2020-08-07

修回日期: 2020-09-14

网络出版日期: 2021-01-29

基金资助

国家重点研发计划项目“深地资源勘查开采”重点专项“中国东部中生代构造格局与演化”(2016YFC0600401);国家自然科学基金项目“湘东北地区钴铜多金属成矿作用研究”(41672077);“海南石碌铁多金属矿床中钴铜矿成矿物质来源及年代学研究”(41302049)

收起

Occurrence State and Ore-forming Regularity of Critical Metal Cobalt in the Changsha-Pingjiang Fault Zone，Northeastern Hunan Province

Zhilin WANG ,
Yang WU ,
Deru XU ,
Shaohao ZOU ,
Guojun DONG ,
Erke PENG ,
Juntao NING ,
Bo KANG

Expand

^1.Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring，Ministry of Education，School of Geosciences and Info-Physics，Central South University，Changsha 410083，Hunan，China
^2.State Key Laboratory of Nuclear Resources and Environment，East China University of Technology，Nanchang 330013，Jiangxi，China
^3.Team 402，Hunan Geology and Mineral Resources Exploration and Development Bureau，Changsha 410004，Hunan，China

Received date: 2020-08-07

Revised date: 2020-09-14

Online published: 2021-01-29

Fold

摘要

近年来，我国在湘东北长沙—平江断裂带东侧的井冲—北山一带的钴资源找矿勘查取得了较大进展，相继发现了井冲铜钴多金属矿床（中型）、横洞钴铜矿床（中型）和大岩金钴矿化点等热液脉型钴独立/共生矿床（点）。通过系统分析长沙—平江断裂带钴的成矿特征和控矿因素，在识别不同成矿阶段的基础上，总结了钴的主要产出形式和赋存状态。结果表明：与毒砂共生的细粒黄铁矿中钴含量高达13.48%，明显高于其他类型的黄铁矿中的钴含量（最高仅为1.06%），据此提出细粒黄铁矿+毒砂矿物组合可作为长沙—平江钴矿带寻找高品位钴矿的直接矿物标志。结合含钴矿物的类型、分布与丰度，提出了初步的选冶建议。

关键词： 关键金属钴; 黄铁矿; 毒砂; 辉砷钴矿; 长沙—平江断裂带; 赋存状态; 湘东北

本文引用格式

王智琳 , 伍杨 , 许德如 , 邹少浩 , 董国军 , 彭尔柯 , 宁钧陶 , 康博 . 湘东北长沙—平江断裂带关键金属钴的赋存状态与成矿规律[J]. 黄金科学技术, 2020 , 28(6) : 779 -785 . DOI: 10.11872/j.issn.1005-2518.2020.06.147

Abstract

Recently，the exploration of cobalt resources in the Jingchong-Beishan area，the east of Changsha-Pingjiang fault zone，northeastern Hunan Province，has made great advances.Some Co （-polymetallic） vein deposits including the medium-size Jingchong Cu-Co polymetallic deposit and Hengdong Co-Cu deposit，and Dayan Au-Co occurrence were discovered in this region.Based on the detailed field observation，this study identified the ore stages，and concluded the metallogenic characteristics of Changsha-Pingjiang cobalt ore belt as well as the ore-forming factors.The combined microscopic observation and in-situ analytical methods revealed that the metal Co was mainly incorporated in fine-grained pyrite and arsenopyrite as stoichiometric substitution，with subordinate occurrence as independent mineral cobaltite.The complicated texture and chemical compositions of Co-beating pyrite and arsenopyrite indicated that pyrite associated with arsenopyrite has the higher Co concentration （up to 13.48%），greater than that in arsenopyrite-exclusive assemblages.Therefore，the mineral assemblage of fine-grained pyrite and arsenopyrite can be used as the mineral fingerprint to trace the high-grade Co ores during the prospecting exploration.Subsequently，the preliminary mineral processing technology was proposed.

Key words： critical metal cobalt; pyrite; arsenopyrite; cobaltite; Changsha-Pingjiang fault zone; occurrence state; northeast of Hunan Province

参考文献

1	Geological Survey U.S.. Critical mineral resources of the United States—Economic and environmental geology and prospects for future supply［R］.Reston：
1	U.S. Geological Survey Professional Paper1802，2017.
2	许德如，王智琳，聂逢君，等.中国钴矿资源现状与关键科学问题［J］.中国科学基金，2019，33（2）：125-132.
2	Xu Deru，Wang Zhilin，Nie Fengjun，et al.Cobalt resources in China：Current research status and key scientific issues［J］.Bulletin of National Natural Science Foundation of China，2019，33（2）：125-132.
3	中华人民共和国自然资源部.中国矿产资源报告［M］.北京：地质出版社，2019.
3	Ministry of Natural Resources of the People’s Republic of China.China Mineral Resources［M］.Beijing：Geological Press，2019.
4	丰成友，张德全，党兴彦.中国钴资源及其开发利用概况［J］.矿床地质，2004，23（1）：93-100.
4	Feng Chengyou，Zhang Dequan，Dang Xingyan.Cobalt resources of China and their exploitation and utilization［J］.Mineral Deposits，2004，23（1）：93-100.
5	Wang Z L，Xu D R，Zhang Z C，et al.Mineralogy and trace element geochemistry of the Co- and Cu-bearing sulfides from the Shilu Fe-Co-Cu ore district in Hainan Province of South China［J］.Journal of Asian Earth Sciences，2015，113：980-997.
6	Feng C Y，Qu W J，Zhang D Q，et al. Re-Os dating of pyrite from the Tuolugou stratabound Co（Au） deposit，eastern Kunlun Orogenic Belt，northwestern China［J］.Ore Geology Reviews，2009，36（1/2/3）：213-220.
7	丰成友，张德全，佘宏全，等.青海驼路沟钴（金）矿床形成的构造环境及钴富集成矿机制［J］.矿床地质，2006，25（5）：544-561.
7	Feng Chengyou，Zhang Dequan，She Hongquan，et al.Tectonic setting and metallogenic mechanism of Tuolugou cobalt（gold） deposit，Qinghai Province［J］.Mineral Deposits，2006，25（5）：544-561.
8	董耀松.吉林大横路钴铜矿床钴元素地球化学特征及矿床成因［J］.世界地质，2001，20（1）：30-33.
8	Dong Yaosong.Cobalt element geochemical characteristics of Dahenglu cobalt-copper ore deposit in Jilin Province and its genetics［J］.World Geology，2001，20（1）：30-33.
9	焦建刚，黄喜峰，袁海潮，等.青海德尔尼铜（钴）矿床研究新进展［J］.地球科学与环境学报，2009，31（1）：42-47.
9	Jiao Jiangang，Huang Xifeng，Yuan Haichao， et al.Progress in the research of Deerni Cu（Co） ore deposit［J］.Journal of Earth Sciences and Environment，2009，31（1）：42-47.
10	Zou S H，Zou F H，Ning J T，et al. A stand-alone Co mineral deposit in northeastern Hunan Province，South China：its timing，origin of ore fluids and metal Co，and geodynamic setting［J］.Ore Geology Reviews，2018，92：42-60.
11	宁钧陶.湘东北原生钴矿成矿地质条件分析［J］.湖南地质，2002，21（3）：192-195.
11	Ning Juntao.Analysis on metallogenic geologic conditions of original Co-deposits in northeastern Hunan［J］.Hunan Geology，2002，21（3）：192-195，200.
12	Wang Z L，Xu D R，Chi G X，et al. Mineralogical and isotopic constraints on the genesis of the Jingchong Co-Cu polymetallic ore deposit in northeastern Hunan Province，South China［J］.Ore Geology Reviews，2017，88：638-654.
13	许德如，王力，李鹏春，等.湘东北地区连云山花岗岩的成因及地球动力学暗示［J］.岩石学报，2019，25（5）：1056-1078.
13	Xu Deru，Wang Li，Li Pengchun，et al.Petrogenesis of the Lianyunshan granites in northeastern Hunan Province，South China，and its geodynamic implications［J］.Acta Petrologica Sinica，2019，25（5）：1056-1078.
14	张文山.湘东北长沙—平江断裂动力变质带的构造及地球化学特征［J］.大地构造与成矿学，1991，15（2）：100-109.
14	Zhang Wenshan.Structural and geochemical features of the Changsha-Pingjiang fracture dynamic metamorphism zone in northeastern Hunan Province，China［J］.Geotectonica et Metallogenia，1991，15（2）：100-109.
15	Wang X L，Zhou J C，Griffin W L，et al. Detrital zircon geochronology of Precambrian basement sequences in the Jiangnan orogeny：Dating the assembly of the Yangtze and Cathaysia Blocks［J］.Precambrian Research，2007，159（1/2）：117-131.
16	Ji W B，Lin W，Faure M，et al. Origin of the Late Jurassic to Early Cretaceous peraluminous granitoids in the northeastern Hunan province（middle Yangtze region），South China：Geodynamic implications for the Paleo-Pacific subduction［J］.Journal of Asian Earth Sciences，2017，141：174-193.
17	Shu L S，Zhou X M，Deng P，et al.Mesozoic tectonic evolution of the Southeast China Block：New insights from basin analysis［J］.Journal of Asian Earth Sciences，2009，34（3）：376-391.
18	Lin W，Faure M，Monié P，et al.Tectonics of SE China：New insights from the Lushan massif （Jiangxi Province）［J］.Tectonics，2000，19（5）：852-871.
19	Sun W D，Ling M X，YangX Y，et al.Ridge subduction and porphyry copper-gold mineralization：An overview［J］.Science China（Earth Sciences），2010，53：475-484.
20	Li J H，Zhang Y Q，Dong S W，et al.Cretaceous tectonic evolution of South China：A preliminary synthesis［J］.Earth-Science Reviews，2014，134：98-136.

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献