丰村铅锌矿赋矿地层微量元素地球化学特征

金属矿山 ›› 2013, Vol. 42 ›› Issue (08): 80-83.

丰村铅锌矿赋矿地层微量元素地球化学特征

李兴远^1,2,3，周永章^1,2,3，安燕飞^1,2,3，吕文超^1,2,3，白明亮^1,3

1.广东省地质过程与矿产资源探查重点实验室； 2.中山大学地球科学系；3.中山大学地球环境与地球资源研究中心

出版日期:2013-08-15 发布日期:2013-09-27
基金资助:
* 国家重要成矿带矿产远景调查重大项目（编号：1212011085412）。

Geochemical Characteristics of Trace Elements in Fengcun Lead-zinc Deposits

Li Xingyuan^1,2,3，Zhou Yongzhang^1,2,3，An Yanfei^1,2,3，Lu Wenchao^1,2,3，Bai Mingliang^1,3

1.Guangdong Provinical Key Laboratory of Mineral Resources and Geological Processes；2.Department of Earth Sciences，Sun Yat-sen University；3.Center for Earth Environment & Resources，Sun Yat-sen University

Online:2013-08-15 Published:2013-09-27

摘要/Abstract

摘要： 对丰村铅锌矿东岗岭组灰岩进行微量元素测试分析，结果表明：Mn含量为（208.3~3 191）×10^-6，平均为1 027.42×10^-6，大约是中国沉积岩石丰度的4倍，Sr含量为（28.69~488.9）×10^-6，平均为300.45×10^-6。w(Sr)/w(Ba)>1，可能是正常海相沉积，而且，w(Sr)/w(Cu)值一般都远大于10，说明该组灰岩沉积时处于封闭、干燥、缺氧的还原环境；Pb、Zn均明显高于地壳丰度，推测东岗岭组灰岩可能是其主要矿源层，少部分样品w(U)/w(Th)>1，暗示后期受热液改造，丰村铅锌矿具有沉积叠加热液改造型矿床的特点。

关键词: 丰村铅锌矿床, 东岗岭组灰岩, 微量元素, 沉积环境, 热液改造

Abstract: According to the survey and analysis of trace elements in Donggangling limestone of Fengcun lead-zinc mine，the results show: Mn content ranges from 208.3×10^-6 to 3 191×10^-6，with the average Mn content of 1 027.42×10^-6;Sr content ranges from 28.69×10^-6 to 488.9×10^-6，with the average Sr content of 300.45×10^-6.w(Sr) /w (Ba)>1，it may be the normal marine sediments.And，w(Sr)/w(Cu) is generally greater than 10，indicating that the sedimentary of limestone is in a closed，dry，anoxic reduction environment.The Pb，Zn contents are significantly higher than the crustal abundance.It is inferred that Donggangling limestone is the main source of the ore.Besides，based on the w（U）/w（Th）>1 in some ore samples，it indicates that Fengcun lead-zinc deposit has the characteristics of sedimentary superimposed hydrothermal reformation type deposit，resulting from the hydrothermal reformation at latter period.

Key words: Fengcun lead-zinc deposits, Donggangling limestone, Trace element, Sedimentary environment, Hydrothermal reformation

李兴远, 周永章, 安燕飞, 吕文超, 白明亮. 丰村铅锌矿赋矿地层微量元素地球化学特征[J]. 金属矿山, 2013, 42(08): 80-83.

LI Xing-Yuan, ZHOU Yong-Zhang, AN Yan-Fei, 吕Wen-Chao , BAI Ming-Liang. Geochemical Characteristics of Trace Elements in Fengcun Lead-zinc Deposits[J]. Metal Mine, 2013, 42(08): 80-83.

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