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Distributions of selenium and related elements in high pyrite and Se-enriched rocks from Ziyang, Central China
Tian, Huan1; Xie, Shuyun2; Carranza, Emmanuel John M.3,4; Bao, Zhengyu1,5; Zhang, Hai6; Wu, Shitou7; Wei, Changhua1; Ma, Zhenzhen1
2020-05-01
Source PublicationJOURNAL OF GEOCHEMICAL EXPLORATION
ISSN0375-6742
Volume212Pages:16
AbstractPyrite-bearing volcanic tuff and carbonaceous slates of the Lower Cambrian Lujiaping Formation have been considered the source of selenium (Se) in high-Se soils in the area of the Naore Village of the Ziyang County, China, where acute Se toxicity occurred in the 1980s. For geochemical exploration, the accumulation and distribution of Se and trace elements within the pyrite grains are of great indicative significance for understanding the possible origin and forming mechanism of the Se enrichment. In this work, 7 rock samples and 89 pyrite grains were collected and analysed to investigate the element micro-distribution within the pyrite grains using EPMA and LA-ICP-MS. The whole-rock analysis shows that the pyrite-bearing Lower Cambrian rocks in Ziyang are commonly enriched in Se, As, Mo, Cd, Cr, Ni, Sb, Cu and Ba. In situ microanalysis indicates that Se (30-1880 mu g/g) and As (160-2960 mu g/g) concentrations within the pyrite grains are 1-2 orders of magnitude higher than those in the host rocks (Se: 0.56-73.1 mu g/g, As: 2.56-195 mu g/g) and that the Se contents are negatively correlated with pyrite mineral sizes. Grain-scale element mappings of fresh Se-enriched pyrites reveal two types of Se and As distribution patterns (type-I: high-Se 120-1870 mu g/g and low-As < 150-1580 mu g/g cores, type-II: low-Se 60-680 mu g/g and low-As < 150-1310 mu g/g cores) with alternating Se or As contents during the growth of zoned pyrite. The texture of pyrite element zoning reflects multi-stage hydrothermal pulses with changing trace element concentrations. Type-II pyrite formed later than type-I pyrite. Genetic analysis confirms that Se-enriched strata were strongly affected by hydrothermal submarine deposition and that Se in pyrite was mainly derived from hydrothermal fluids. Secondary hydrothermal erosion led to the formation of high-Se "fractures" (Se content 19.3 wt%). In summary, utilizing pyrite as an indicator for the Lower Cambrian Lujiaping Formation Se-bearing strata extends our understanding of selenium geochemical processes and highlights the mechanistic aspects of Se.
KeywordSe-enriched pyrite Element zoning Hydrothermal fluid Lower Cambrian
DOI10.1016/j.gexplo.2020.106506
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of Hubei Province ; Natural Science Foundation of Hubei Province ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Geological Survey ; China Geological Survey ; Science and Technology Agency of Shaanxi Province ; Science and Technology Agency of Shaanxi Province ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of Hubei Province ; Natural Science Foundation of Hubei Province ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Geological Survey ; China Geological Survey ; Science and Technology Agency of Shaanxi Province ; Science and Technology Agency of Shaanxi Province ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of Hubei Province ; Natural Science Foundation of Hubei Province ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Geological Survey ; China Geological Survey ; Science and Technology Agency of Shaanxi Province ; Science and Technology Agency of Shaanxi Province ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of Hubei Province ; Natural Science Foundation of Hubei Province ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Geological Survey ; China Geological Survey ; Science and Technology Agency of Shaanxi Province ; Science and Technology Agency of Shaanxi Province ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE)
WOS KeywordCAMBRIAN BLACK SHALES ; SOUTH CHINA ; WITWATERSRAND BASIN ; SEDIMENTARY-ROCKS ; NATIVE SELENIUM ; SELENOSIS AREA ; HUBEI PROVINCE ; WESTERN HUBEI ; DABA REGION ; YUTANGBA
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFC0600501] ; Natural Science Foundation of Hubei Province[2019CFB235] ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan)[G1323519320] ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan)[CUG170104] ; China Geological Survey[12120113087100] ; China Geological Survey[DD20160095-13] ; Science and Technology Agency of Shaanxi Province[2016FP3-11] ; Science and Technology Agency of Shaanxi Province[2017TSCXL-NY-02-01] ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE)[WHS201302]
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of Hubei Province ; Natural Science Foundation of Hubei Province ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Geological Survey ; China Geological Survey ; Science and Technology Agency of Shaanxi Province ; Science and Technology Agency of Shaanxi Province ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of Hubei Province ; Natural Science Foundation of Hubei Province ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Geological Survey ; China Geological Survey ; Science and Technology Agency of Shaanxi Province ; Science and Technology Agency of Shaanxi Province ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of Hubei Province ; Natural Science Foundation of Hubei Province ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Geological Survey ; China Geological Survey ; Science and Technology Agency of Shaanxi Province ; Science and Technology Agency of Shaanxi Province ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; Natural Science Foundation of Hubei Province ; Natural Science Foundation of Hubei Province ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Geological Survey ; China Geological Survey ; Science and Technology Agency of Shaanxi Province ; Science and Technology Agency of Shaanxi Province ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE) ; China Geological Sciences Institute of Geophysical Geochemical Exploration (IGGE)
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000523564700004
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95517
Collection科技支撑系统
Corresponding AuthorXie, Shuyun; Bao, Zhengyu
Affiliation1.China Univ Geosci, Fac Chem & Mat Sci, State Key Lab Geol Proc & Mineral Resources GPMR, Wuhan 430074, Peoples R China
2.China Univ Geosci, Fac Earth Sci, State Key Lab Geol Proc & Mineral Resources GPMR, Wuhan 430074, Peoples R China
3.Univ KwaZulu Natal, Sch Agr Earth & Environm Sci, Geol Sci, ZA-3629 Westville, South Africa
4.James Cook Univ, Econ Geol Res Ctr EGRU, Townsville, Qld, Australia
5.China Univ Geosci, Zhejiang Inst, Hangzhou 311305, Zhejiang, Peoples R China
6.Guizhou Prov Bur Geol & Mineral Resources, Geol 113 Brigade, Liupanshu 553001, Guizhou, Peoples R China
7.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Tian, Huan,Xie, Shuyun,Carranza, Emmanuel John M.,et al. Distributions of selenium and related elements in high pyrite and Se-enriched rocks from Ziyang, Central China[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2020,212:16.
APA Tian, Huan.,Xie, Shuyun.,Carranza, Emmanuel John M..,Bao, Zhengyu.,Zhang, Hai.,...&Ma, Zhenzhen.(2020).Distributions of selenium and related elements in high pyrite and Se-enriched rocks from Ziyang, Central China.JOURNAL OF GEOCHEMICAL EXPLORATION,212,16.
MLA Tian, Huan,et al."Distributions of selenium and related elements in high pyrite and Se-enriched rocks from Ziyang, Central China".JOURNAL OF GEOCHEMICAL EXPLORATION 212(2020):16.
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