Research on REE Geochemical Characteristics of the Xiaba Pb-Zn Ore Deposit, Guangxi

Abstract

Abstract: This paper used inductively coupled plasma mass spectrometry (ICP-MS) to determine the concentration of rare earth elements (REE) and the composition of ore and surrounding rocks of Pb-Zn deposit from Xiaba, Guangxi Province, and discussed the geochemical characteristics and the source of ore-forming fluid of the deposit. The results show that the total rare earth content is quite low, ranging from 0.51×10-6 to 36.53×10-6, while LREE/HREE is about 3.06 to 6.05. In different types of ore body, the content and distribution patterns of REE vary in a quite wide range, and negative anomaly for Ce and both positive and negative anomaly for Eu are presented in the samples. Combined with the REE parameters and geological features of the ore, it can be deduced that the metallogenic fluid source of Xiaba deposit is a hybrid of ore-bearing brine and deep circling underground water under special physical-chemical condition.

Key words: REE geochemistry, source of ore, Pb-Zn ore deposit, Xiaba, Guangxi

CLC Number:

OU Zheng1，2, WEI Chong-tao1, MO Shao-wen2, GAO He-feng3, Santigie Kekuda Sesay1,. Research on REE Geochemical Characteristics of the Xiaba Pb-Zn Ore Deposit, Guangxi[J]. Geoscience, 2013, 27(4): 841-846.

References

[1]陈好寿, 吕红, 石焕琪.广西北山层控闪锌矿-黄铁矿矿床的稳定同位素地球化学研究[J].地质学报, 1987(1): 46-57. [2]刘崇民, 徐外生.北山铅锌黄铁矿矿床成因的地球化学论据[J].物探与化探, 1987, 11(1): 31-37. [3]汪金榜, 王显富.广西北山铅锌黄铁矿矿床地质特征及成因的探讨[J].中国岩溶, 1988, 7(S1): 52-57. [4]郜兆典.广西北山式铅锌、黄铁矿床成矿模式及找矿远景[J].南方国土资源, 2003, 11: 25-27. [5]谢世业, 陈大经, 辛厚勤，等.广西环江县北山地区喷流沉积铅锌矿资源潜力及找矿方向[J].矿产与地质, 2004, 18(6): 217-219. [6]韩吟文, 马振东, 张宏飞.地球化学[M].北京: 地质出版社，2003：7. [7]杨占兴, 史益学, 刘素英.八家子多金属矿床岩石和矿石稀土元素特征及成矿物质来源[J].辽宁地质, 1991, 12 (4): 322-331. [8]李双建, 肖开华, 沃玉进.湘西、黔北地区志留系稀土元素地球化学特征及其地质意义[J].现代地质, 2008, 22(2): 273-280. [9]冯东, 陈多福.黑海西北部冷泉碳酸盐岩的沉积岩石学特征及氧化还原条件的稀土元素地球化学示踪[J].现代地质, 2008, 22(3): 390-396. [10]陈松，桂和荣，孙林华.灰岩含水层中稀土元素在地下水与围岩间的分异: 以皖北任楼煤矿太原组灰岩含水层为例[J].现代地质, 2011, 25(4): 802-807. [11]Klinkhammer G P, Elderfield H, Edmond J M.Geochemical implications of rare earth element patterns in hydrothermal fluids from mid-ocean ridges[J].Geochimica et Cosmochimica Acta, 1994, 58(23): 5105-5113. [12]薛静, 戴塔根, 付松武.广西武宣盘龙铅锌矿喷流沉积成矿作用: 稀土元素和硫同位素证据[J].大地构造与成矿学, 2011, 35(3): 394-403. [13]Mills R A, Elderfield H.Rare earth element geochemistry of hydrothermal deposits from the active TAG Mound, 26°N Mid-Atlantic Ridge[J].Geochimica et Cosmochimica Acta, 1995, 59: 3511-3524. [14]丁振举, 刘丛强.海底热液沉积物稀土元素组成及其意义[J].地质科技情报, 2000, 19(1): 27-30. [15]刘文均.南岭泥盆系中层控铅锌黄铁矿矿床特征及其成因系列[J].矿床地质, 1989, 8(1): 39-50.