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Trace Elements and Rare Earth Elements of Sulfide Minerals in the Tianqiao Pb-Zn Ore Deposit, Guizhou Province, China
ZHOU Jiaxi; HUANG Zhilong; ZHOU Guofu; LI Xiaobiao; DING Wei; BAO Guangping
2011
发表期刊Acta Geologica Sinica
卷号85期号:1页码:189-199
摘要Trace elements and rare earth elements (REE) of the sulfide minerals were determined by inductively-coupled plasma mass spectrometry. The results indicate that V, Cu, Sn, Ga, Cd, In, and Se are concentrated in sphalerite, Sb, As, Ge, and Tl are concentrated in galena, and almost all trace elements in pyrite are low. The Ga and Cd contents in the light-yellow sphalerites are higher than that in the brown and the black sphalerites. The contents of Ge, Tl, In, and Se in brown sphalerites are higher than that in light-yellow sphalerites and black sphalerites. It shows that REE concentrations are higher in pyrite than in sphalerite, and galena. In sphalerites, the REE concentration decreases from light-yellow sphalerites, brown sphalerites, to black sphalerites. The ratios of Ga/In are more than 10, and Co/Ni are less than 1 in the studied sphalerites and pyrites, respectively, indicating that the genesis of the Tianqiao Pb-Zn ore deposit might belong to sedimentary-reformed genesis associated with hydrothermal genesis. The relationship between LnGa and LnIn in sphalerite, and between LnBi and LnSb in galena, indicates that the Tianqiao Pb-Zn ore deposit might belong to sedimentary-reformed genesis. Based on the chondrite-normalized REE patterns, delta Eu is a negative anomaly (0.13-0.88), and delta Ce does not show obvious anomaly (0.88-1.31); all the samples have low total REE concentrations (< 3 ppm) and a wide range of light rare earth element/high rare earth element ratios (1.12-12.35). These results indicate that the ore-forming fluids occur under a reducing environment. Comparison REE compositions and parameters of sphalerites, galenas, pyrites, ores, altered dolostone rocks, strata carbonates, and the pyrite from Lower Carboniferous Datang Formation showed that the ore-forming fluids might come from polycomponent systems, that is, different chronostratigraphic units could make an important contribution to the ore-forming fluids. Combined with the tectonic setting and previous isotopic geochemistry evidence, we conclude that the ore-deposit genesis is hydrothermal, sedimentary reformed, with multisources characteristics of ore-forming fluids.
关键词Trace Element Rare Earth Element Sphalerite Galena Pyrite Deposit Genesis Tianqiao Pb-zn Ore Deposit
学科领域矿床地球化学
收录类别其他
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/352002/7061
专题矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文
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ZHOU Jiaxi,HUANG Zhilong,ZHOU Guofu,et al. Trace Elements and Rare Earth Elements of Sulfide Minerals in the Tianqiao Pb-Zn Ore Deposit, Guizhou Province, China[J]. Acta Geologica Sinica,2011,85(1):189-199.
APA ZHOU Jiaxi,HUANG Zhilong,ZHOU Guofu,LI Xiaobiao,DING Wei,&BAO Guangping.(2011).Trace Elements and Rare Earth Elements of Sulfide Minerals in the Tianqiao Pb-Zn Ore Deposit, Guizhou Province, China.Acta Geologica Sinica,85(1),189-199.
MLA ZHOU Jiaxi,et al."Trace Elements and Rare Earth Elements of Sulfide Minerals in the Tianqiao Pb-Zn Ore Deposit, Guizhou Province, China".Acta Geologica Sinica 85.1(2011):189-199.
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