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Genesis for Rare Earth Elements Enrichment in the Permian Manganese Deposits in zunyi, Guizhou Province, SW China

Acta Geologica Sinica(English Edition) 2020年第1期94卷 90-102页

作者： XU Hai GAO Junbo YANG Ruidong DU Lijuan LIU Zhichen CHEN Jun FENG Kangning YANG Guanghai College of Resources and Environmental Engineering Guizhou UniversityGuiyang 550025China Key Laboratory of Karst Georesources and Environment Ministry of EducationGuizhou UniversityGuiyang 550025China 102 Geological Team Guizhou Bureau of Exploration and Development of Geology Mineral ResourcesZunyiGuizhou 563003China Institute of Geochemistry Chinese Academy of SciencesGuiyang 550081China

The zunyi manganese deposits, which formed during the Middle to Late Permian period and are located in northern Guizhou and adjacent areas, are the core area of a series of large-medium scale manganese enrichment minerogenesis in the southern margin and interior of the Yangtze platform, Southern China. This study reports the universal enrichment of rare earth elements(REEs) in zunyi manganese deposits and examines the enrichment characteristics, metallogenic environment and genesis of REEs. The manganese ore bodies present stratiform or stratoid in shape, hosted in the silicon–mud–limestones of the Late Permian Maokou Formation. The manganese ores generally present lamellar, massive, banded and brecciated structures, and mainly consist of rhodochrosite, ropperite, tetalite, capillitite, as well as contains paragenetic gangue minerals including pyrite, chalcopyrite, rutile, barite, tuffaceous clay rock, etc. The manganese ores have higher ΣREE contents range from 158 to 1138.9 ppm(average 509.54 ppm). In addition, the ΣREE contents of tuffaceous clay rock in ore beds vary from 1032.2 to 1824.5 ppm(average 1396.42 ppm). The REEs from manganese deposits are characterized by La, Ce, Nd and Y enriched, and existing in the form of independent minerals(e.g., monazite and xenotime), indicating zunyi manganese deposits enriched in light rare earth elements(LREE). The Ceanom ratios(average-0.13) and lithofacies and paleogeography characteristics indicate that zunyi manganese deposits were formed in a weak oxidation-reduction environment. The(La/Yb)ch, Y/Ho,(La/Nd)N,(Dy/Yb)N, Ce/Ce* and Eu/Eu* values of samples from the zunyi manganese deposits are 5.53–56.92, 18–39, 1.42–3.15, 0.55–2.20, 0.21–1.76 and 0.48–0.86, respectively, indicating a hydrothermal origin for the manganese mineralization and REEs enrichment. The δ13 CV-PDB(-0.54 to-18.1‰) and δ18 OSMOW(21.6 to 26.0‰) characteristics of manganese ores reveal a mixed source of magmatic and organic matter. Moreover, the manga

关键词： Genesis REEs enrichment Hydrothemal origin Permian manganese deposits zunyi

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Sedimentary Features and Paleogeographic Evolution of the Middle Permian Trough Basin in zunyi,Guizhou,South China

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Journal of Earth Science 2023年第6期34卷 1803-1815页

作者： Zhichen Liu Qi Zhou Ke Liu Yang Wang Deng Chen Yunming Chen Lin Xiao School of Resource and Environmental Engineering Guizhou UniversityGuiyang 550003China State Key Laboratory of Biogeology and Environmental Geology School of Earth SciencesChina University of GeosciencesWuhan430074China 102 Geological Party Guizhou Bureau of Geology and Mineral Exploration and DevelopmentZunyi 563099China Innovation Center of Ore Resources Exploration Technology in the Region of Bedrock Ministry of Natural ResourcesGuiyang 550004China Guizhou Bureau of Geology and Mineral Exploration and Development Guiyang 550004China

Based on detailed field surveys,numerous sections and drillcores as well as analyses of lithofacies and sedimentary facies,sedimentary differentiation in the Middle Permian zunyi(northern Guizhou,South China)trough basin was studied in *** by activities of the Emeishan mantle plume,the regional extensional setting and the extinguishing of carbonate production factories were shown from Guizhou to *** types of sedimentary enironments were developed in the study area:platform,slope,and *** this work,we established a sedimentary model for the study area,identified 14 syndepositional faults,and created the detailed reconstruction of the trough basin via a sedimentological *** is found that the paleogeographic evolution of the study area can be divided into six stages:(1)a pre-rifting stage,(2)rapid rifting and subsidence,(3)stable rifting and subsidence,(4)the second stage of rifting and subsidence,(5)silicification,and(6)regional uplift and *** sedimentary features and paleogeographic evolution of the Maokou Formation in zunyi show that the platform,slope,and basin sedimentary features *** addition,the extensional setting and extinguishing of carbonate production factories were important preconditions for the evolution of the platform region in the study area,and the activity of syndepositional faults also played an important role in the paleogeographic evolution of this area.

关键词： Permian Maokou Period zunyi Guizhou Province trough basin paleogeographic evo-lution sedimentary rocks deposits South China

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Evaluation of Trace Elements in the Soil of Typical Peach Orchards in zunyi City

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Agricultural Biotechnology 2024年第1期13卷 17-19页

作者： Wenzhao LI Xiong YAN Jun CHENG Xingyong WANG Changling SUI Xiangchun ZHANG Zhuang ZHAO Peng ZHOU zunyi Normal University Zunyi 563006China Lunyi Taoli Renjia Agricultural Development Co. Ltd.Zunyi 563005China Gaofang Joint-stock Economic Cooperative Union Shenxi TownHonghuagang DistrictZunyi CityZunyi 563005China Honghuagang Science and Technology Service Center Zunyi 563099China

[Objectives]This study was conducted to clarify the enrichment and paucity of trace elements in the soil environment of peach orchards in zunyi City,and to provide reference for supplementary application of microelement fertilizers and high-quality peach production in peach orchards.[Methods]Taking the soil of three typical peach orchards(Taoli Renjia peach orchard,Pengrui peach orchard and Taohuadao peach orchard)in Shenxi Town,Honghuagang District,zunyi City as the research object,the contents of trace elements in soil were analyzed through field sampling and indoor determination of trace elements.[Results]The effective contents of trace elements in the soil of peach orchard bases in the study area were at a medium level,and the soil of the peach orchards was rich in available Fe and *** contents of available Cu,Mo and Mn were relatively *** contents of available B were not high *** contents of available Zn were at a moderate to low level *** soil of Taoli Renjia peach orchard was relatively rich in trace elements.[Conclusions]The research results can provide a scientific basis for the production of high-quality crispy peaches in peach orchards.

关键词： zunyi Soil in peach orchard Trace elements Evaluation

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Alumina Project Financing In Place In zunyi

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China Nonferrous Metals Monthly 2018年第12期 9-9页

On September 21,2018,Export-Import Bank of China officially grant the first loan of RMB200 million to Chinalco zunyi Company,marking the successful implementation of the alumina project financing in zunyi.

关键词： Alumina Project Chinalco zunyi Company

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