湘东北地区栗山铅锌铜多金属矿床的成因探讨:来自矿床地质、矿物学和硫同位素的证据
Genesis of the Lishan Pb-Zn-Cu polymetallic deposit in northeastern Hunan province: evidences from the geology, mineralogy and sulfur isotopes
查看参考文献87篇
|
文摘
|
湘东北大型栗山铅锌铜多金属矿床位于幕阜山岩体边部,矿体赋存于岩体及其内外接触带中的硅化构造角砾岩带内.根据野外调查和显微岩(矿)相学观察,可将栗山矿床的主成矿期——热液成矿期划分为四个阶段:粗粒石英+萤石+绿泥石$\left( {{\rm{Ch}}{{\rm{l}}_{\rm{I}}}} \right)$+少量黄铁矿+黄铜矿阶段(I )、石英+萤石+绿泥石$\left( {{\rm{Ch}}{{\rm{l}}_{{\rm{II}}}}} \right)$ +黄铜矿+黄铁矿阶段(Ⅱ)、石英+萤石+绿泥石$\left( {{\rm{Ch}}{{\rm{l}}_{{\rm{III}}}}} \right)$.闪锌矿+黄铜矿+方铅矿阶段(Ⅲ)、细粒石英+少量黄铜矿+黄铁矿细脉阶段(Ⅳ). EPMA分析结果表明${{\rm{Ch}}{{\rm{l}}_{\rm{I}}}}$为蠕绿泥石,${{\rm{Ch}}{{\rm{l}}_{{\rm{II}}}}}$|和${{\rm{Ch}}{{\rm{l}}_{{\rm{III}}}}}$为鲕绿泥石一铁镁绿泥石.根据绿泥石温度计,估算出阶段I, Ⅱ,Ⅲ的成矿温度分别为239 ℃~280 ℃,221 ℃-261 ℃和212 ℃~238 ℃.结合闪锌矿硫逸度计算,表明栗山矿床形成于中温、低氧逸度、低硫逸度的环境.硫化物的${{\rm{\delta }}^{34}}$S(-4.7‰~1.5‰)变化较小且接近零值,表明成矿流体主要来源于岩浆热液.通过与钦杭成矿带上典型的铅锌矿床对比,提出栗山矿床为与岩浆热液有关的中温热液充填交代成因. |
|
其他语种文摘
|
The northeastern Hunan province is located at the central segment of the Jiangnan Orogen known as an economically important Au-Sb-W-Cu polymetallic metallogenic belt. Recently, several Co, Cu, Pb-Zn polymetallic deposits were discovered in northeastern Hunan Province,and they all have a close spatial relationship with the Yanshanian plutons. Among these deposits,the Lishan Pb-Zn-Cu polymetallic deposit occurs within the Mufushan pluton and its contact zone,with orebodies hosted within altered fracture zones. Based on the detailed field investigation and microscopic observation,the Lishan Pb-Zn-Cu polymetallic mineralization can be divided into two epochs:hydrothermal mineralization and supergene enrichment. Furthermore,hydrothermalism can further be subdivided into four stages: coarse quartz + fluorite + chlorite $\left( {{\rm{Ch}}{{\rm{l}}_{\rm{I}}}} \right)$ + minor pyrite + chalcopyrite stage (I),quartz + fluorite + chlorite$\left( {{\rm{Ch}}{{\rm{l}}_{{\rm{II}}}}} \right)$ + chalcopyrite + pyrite stage(Ⅱ),quartz+fluorite+chlorite $\left( {{\rm{Ch}}{{\rm{l}}_{{\rm{III}}}}} \right)$ + sphalerite + chalcopyrite + galena stage(Ⅲ), and fine-grained quartz+minor pyrite+ chalcopyrite stage (IV),from early to late. The EPMA analyses show that ${{\rm{Ch}}{{\rm{l}}_{\rm{I}}}}$ belongs to ripidolite,and that ${{\rm{Ch}}{{\rm{l}}_{{\rm{II}}}}}$ and ${{\rm{Ch}}{{\rm{l}}_{{\rm{III}}}}}$ are dominated by daphnite and brunsvigite. The empirical geothermometers of chlorite yield temperatures of 239℃~280℃(av.255℃),221℃~261 ℃ (av.244 ℃)and212℃~238 ℃ (av.231 ℃) for ${{\rm{Ch}}{{\rm{l}}_{\rm{I}}}}$,${{\rm{Ch}}{{\rm{l}}_{{\rm{II}}}}}$ and ${{\rm{Ch}}{{\rm{l}}_{{\rm{III}}}}}$,respectively,showing a decreasing trend. The estimated oxygen fugacities $\lg f\left( {{{\rm{O}}_2}} \right)$ and sulfur fugacities $\lg f\left( {{{\rm{O}}_2}} \right)$ are -39.90~-34.77 and 0.22~8.41,—42.29~-37.51 and-3.25 ~4.25,and - 43.71 ~-39.08 and —2.88 ~1.47 for ${{\rm{Ch}}{{\rm{l}}_{\rm{I}}}}$, ${{\rm{Ch}}{{\rm{l}}_{{\rm{II}}}}}$ and ${{\rm{Ch}}{{\rm{l}}_{{\rm{III}}}}}$,respectively,suggesting an environment of low oxygen fugacity and low sulfur fugacity. Sphalerite and galena yield ${{\rm{\delta }}^{34}}$ S values of -4.7‰ to 1.5‰,suggesting a predominant magmatic sulfur origin. Integrating the geological, mineralogical and sulfur isotopic data documented in this study,as well as the contrast with typical Pb-Zn deposits within the Qin-Hang metallogenic belt,we propose that the Lishan Pb-Zn-Cu polymetallic deposit formed from a hydrothermal system related to the Mufushan pluton,and is of medium-temperature hydrothermal fracture filling type. |
|
来源
|
南京大学学报. 自然科学版
,2018,54(2):366-385 【核心库】
|
|
DOI
|
10.13232/j.cnki.jnju.2018.02.011
|
|
关键词
|
中温热液充填交代型矿床
;
栗山铅锌铜多金属矿床
;
幕阜山岩体
;
湘东北地区
|
|
地址
|
1.
中南大学, 有色金属成矿预测与地质环境监测教育部重点实验室, 长沙, 410083
2.
中南大学地球科学与信息物理学院, 长沙, 410083
3.
中国科学院广州地球化学研究所, 中国科学院矿物学与成矿学重点实验室, 广州, 510640
4.
湖南省地质矿产勘查开发局402队, 长沙, 410004
5.
湖南省地质测试研究院, 长沙, 410007
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
0469-5097 |
|
学科
|
地质学 |
|
基金
|
国家自然科学基金
;
科技部国家重点研发计划
;
湖南省自然科学基金
|
|
文献收藏号
|
CSCD:6209872
|
参考文献 共
87
共5页
|
|
1.
张九龄. 湖南桃林铅锌矿床控矿条件及成矿预测.
地质与勘探,1989,4(5):1-7
|
被引
1
次
|
|
|
|
|
2.
刘亮明. 湘东北地区脉型金矿床成矿构造特征及构造成矿机制.
大地构造与成矿学,1997,21(3):197-204
|
被引
17
次
|
|
|
|
|
3.
符巩固. 湘东北地区金成矿地质特征及找矿新进展.
大地构造与成矿学,2002,26(4):416-422
|
被引
18
次
|
|
|
|
|
4.
肖拥军. 湘东北万古地区金矿床成矿构造特征的初步研究.
地质与勘探,2007,43(3):42-45
|
被引
10
次
|
|
|
|
|
5.
文志林. 湘东北万古金矿床控矿构造特征与控矿规律研究.
大地构造与成矿学,2016,40(2):281-294
|
被引
12
次
|
|
|
|
|
6.
Deng T. Geology,geochronology, geochemistry and ore genesis of the Wangu gold deposit in northeastern Hunan Province, Jiangnan Orogen, South China.
Ore Geology Reviews,2017,88:619-637
|
被引
26
次
|
|
|
|
|
7.
Xu D R. Gold mineralization in the Jiangnan Orogenic Belt of South China: Geological,geochemical and geochronological characteristics,ore deposit-type and geodynamic setting.
Ore Geology Reviews,2017,88:565-618
|
被引
31
次
|
|
|
|
|
8.
Wang Z L. Mineralogical and isotopic geochemical constraints on the genesis of the Jingchong Co-Cu polymetallic ore deposit in northeastern Hunan Province of South China.
Ore Geology Reviews,2017,88:638-654
|
被引
7
次
|
|
|
|
|
9.
Wang L X. Genesis of leucogranite by prolonged fractional crystallization: A study of the Mufushan complex, South China case.
Lithos,2014:147-163
|
被引
35
次
|
|
|
|
|
10.
Cathelineau M. A chlorite solid solution geothermometer the Los Azufres (Mexico) geothermal system.
Contributions to Mineralogy and Petrology,1985,91(3):235-244
|
被引
65
次
|
|
|
|
|
11.
Bourdelle F. A new chlorite geothermometer for diagenetic to low-grade metamorphic conditions.
Contributions to Mineralogy and Petrology,2013,165(4):723-735
|
被引
8
次
|
|
|
|
|
12.
Wilkinson J J. The chlorite proximitor: A new tool for detecting porphyry ore deposits.
Journal of Geochemical Exploration,2015,152:10-26
|
被引
26
次
|
|
|
|
|
13.
郭国林. 302铀矿床绿泥石特征及其与铀成矿的关系.
铀矿地质,2012,28(3):35-41
|
被引
17
次
|
|
|
|
|
14.
杨超. 西藏拿若斑岩型铜(金)矿床绿泥石特征及其地质意义.
地质学报,2015,89(5):856-872
|
被引
10
次
|
|
|
|
|
15.
刘英俊.
元素地球化学,1984:548
|
被引
19
次
|
|
|
|
|
16.
涂光炽. 分散元素成矿机制研究获重大进展.
中国科学院院刊,2003,5:358-361
|
被引
29
次
|
|
|
|
|
17.
Ye L. Trace and minor elements in sphalerite from base metal deposits in South China:a LA-ICPMS study.
Ore Geology Reviews,2011,39(4):188-217
|
被引
123
次
|
|
|
|
|
18.
Wang X L. Geochemistry of the Meso-to Neoproterozoic basic-acid rocks from Hunan Province, South China: implications for the evolution of the western Jiangnan orogen.
Precambrian Research,2004,135(1/2):79-103
|
被引
80
次
|
|
|
|
|
19.
Xu D R. Mesoproterozoic-Neoproterozoic transition: Geochemistry, provenance and tectonic setting of clastic sedimentary rocks on the SE margin of the Yangtze Block, South China.
Journal of Asian Earth Sciences,2007,29(5):637-650
|
被引
27
次
|
|
|
|
|
20.
李鹏春.
湘东北地区显生宙花岗岩岩浆作用及其演化规律.博士学位论文,2006
|
被引
1
次
|
|
|
|
|
了解气象卫星更多信息，请访问