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Trace element compositions of pyrite and stibnite:implications for the genesis of antimony mineralization in the Yangla Cu skarn deposit,Northwestern Yunnan,China

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Acta Geochimica 2024年第3期43卷 535-554页

作者： Ping Pan Xinfu Wang Bo Li Guo Tang Zuopeng Xiang Faculty of Land and Resource Engineering Kunming University of Science and TechnologyKunming 650093China Kunming Metallurgy College Kunming 650033China School of Earth Science Yunnan UniversityKunming 650500China Kunming Prospecting Design Institute of China Nonferrous Metals Industry Co. LtdKunming 650051China

The Yangla Cu skarn deposit is located in the central part of the Jinshajiang Suture Zone,southwest China,with a total reserve of 150 Mt Cu@1.03%.The newly discovered antimony orebodies at the depth of Yangla are strictly controlled by the stratum,structure,and lithology,which are lenticular and vein-like within the marble fracture zone,which can provide a window into multistage miner-alization and ore genesis at *** can be divided into three types,Cu–Pb–Zn(skarn)pyrite,galena,and sphalerite,Cu(porphyry)chalcopyrite and pyrite,and Sb(hydrothermal)stibnite and *** mineral assem-blages were stibnite+pyrite+calcite+quartz±minor scheelite in antimony *** study presents quantitative measurements of the trace element compositions of pyrite and stibnite from the Yangla antimony *** of pyrite with electron probe microanalysis(EPMA)showed enrichment in Co,Ni,Sb,As,and Mo,and deficit in its S and Fe contents when compared to the stoichiometric con-centrations of S and Fe in *** Sb-related pyrite may belong to sedimentary-reworked genesis and may be modi-fied by hydrothermalfluids,thereby presenting a certain dif-ference(i.e.,crystal morphology,texture,and chemical com-position)compared to the skarn and porphyry Cu-related pyrite in the Yangla Cu skarn *** of stibnite with EPMA and inductively coupled plasma-mass spectrom-etry showed enrichment in As,Pb,Sn,Pb,Cu,and Zn,and presented much higher Sb contents and slightly lower S con-tents when compared to the stoichiometric concentrations of Sb and S in *** analysis of the stibnite trace elements showed correlations for the elemental pairs Cu–Pb,As–Sb,and Sn–Pb,and the coupled substitution equations Sb^(3+)↔Cu^(+)+Pb^(2+),Sb^(3+)↔As^(3+),and Sn^(2+)↔Pb^(2+)may be the major factors governed the incorporating Cu,Pb,As and Sn within the ***,this study preliminary shows that the antimony mineralization may belong to a car-bonate replacement h

关键词： Trace elements Pyrite stibnite Substitution mechanisms Antimony mineralization Yangla Cu skarn deposit

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One-step electrochemical reduction of stibnite concentrate in molten borax

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International Journal of Minerals,Metallurgy and Materials 2019年第10期26卷 1258-1265页

作者： Levent Kartal Mehmet Baris Daryal Güldem Kartal Sireli Servet Timur Department of Metallurgical and Materials Engineering Hitit UniversityCorum 19030Turkey Department of Metallurgical and Materials Engineering Istanbul Technical UniversityIstanbul 34469Turkey

In this study,antimony production from a stibnite concentrate(Sb2S3)was performed in one step using a molten salt electrolysis method and borax as an *** reduction of the stibnite concentrate was performed at 800℃under galvanostatic conditions and explained in detail by the reactions and intermediate compounds formed in the *** effects of current density(100 800 mA cm^-2)and electrolysis time(10 40 min)on cathodic current efficiency and antimony yields were systematically *** the highest current efficiency,which was obtained at 600 mA cm^-2,direct metal production was possible with 62%cathodic current efficiency and approximately 6 kWh/kg energy *** the end of the 40-min electrolysis duration at 600 mA cm^-2 current density,antimony reduction reached 30.7 g and 99%of the antimony fed to the cell was obtained as metal.

关键词： molten salt electrolysis electrochemical reduction antimony antimony extraction stibnite borax

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Antimony transformation and mobilization from stibnite by an antimonite oxidizing bacterium Bosea sp. AS-1

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Journal of Environmental Sciences 2022年第1期34卷 273-281页

作者： Li Xiang Chaoyang Liu Deng Liu Liyuan Ma Xuan Qiu Hongmei Wang Xiaolu Lu School of Environmental Studies China University of Geosciences(Wuhan)Wuhan 430074China State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences(Wuhan)Wuhan 430074China

Soils and waters are heavily contaminated by antimony in Xikuangshan(XKS)mine *** is widely accepted that oxidative dissolution of sulfide minerals and aqueous dissolution are the most prevalent geochemical mechanisms for the release of Sb to the *** ***-1 is an antimonite-oxidizer isolated from the mine slag in Xikuangshan Sb *** genome sequencing revealed the presence of multiple sulfur-oxidizing genes,antimony(Sb)metabolism genes and carbon fixation genes in AS-1 s *** therefore hypothesized that under oxic conditions,AS-1 could mediate the oxidation of sulfide and Sb(Ⅲ)in stibnite(Sb_(2)S_(3))and lead to the release of ***,strain AS-1 was discovered as an autotrophic Sb(Ⅲ)-*** mobilization studies conducted with strain AS-1showed significantly enhanced mobilization of Sb,and complete oxidation of released Sb and sulfur to Sb(V)and *** addition,AS-1 induced a faster release of Sb under heterotrophic condition,and new acicular minerals might *** findings support the hypothesis that microorganisms play an important role in the mobilization and transformation of Sb in XKS mine area and may contribute to our further understanding of the Sb biogeochemical redox cycle in natural environment.

关键词： Antimonite oxidation Bosea sp.AS-1 stibnite Antimony mobilization Xikuangshan mine area

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Anodic process of stibnite in slurry electrolysis:The direct collision oxidation

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Chinese Journal of Chemical Engineering 2022年第1期35卷 466-472页

作者： Yonglu Zhang Dingfan Qiu Chengyan Wang Yongqiang Chen Zhichao Yao Xiaowu Jie Wei Gao Shufeng Ruan State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China BGRIMM Technology Group Beijing 100160China

Mineral oxidation leaching in the anode area is the key step in slurry *** adopting the slow linear potential scanning method during slurry electrolysis,this study investigated the steady-state polarization curve of a pure stibnite mineral on a graphite *** addition,the influence of the mineral particle size,liquid–solid ratio,stirring speed,and temperature on the collision oxidation of the mineral with the anode was *** on the different oxidation reactions,the potential range can be divided into three intervals:the low-potential interval with a potential lower than 0.75 V,an intermediatepotential interval with a potential within 0.75–1.2 V,and a high-potential interval with a potential higher than 1.2 *** collision oxidation of the mineral with the anode occurred in all three *** oxidation of Sb(III)also appeared in the intermediate-and high-potential intervals,and chlorine evolution occurred in the high-potential ***,the low-potential interval was determined to be a suitable potential interval for the slurry electrolysis *** the low-potential interval,the particle size,liquid–solid ratio,and stirring speed had little effect on the oxidation rate of the *** the temperature increased,the stibnite oxidation rate and exchange current density ***,the direct collision oxidation rate of stibnite was relatively low and the current densities under all the investigated conditions were lower than 0.4 mA·cm^(-*** indicates that it is difficult to realize industrial production while relying solely on this process.

关键词： Slurry electrolysis stibnite Potential range Potential interval Steady-state polarization curve

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CHEMICAL PROPERTIES OF AMINO-CARBOXYLMETHYL CELLULOSE AND ITS DEPRESSING MECHANISMS ON stibnite

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Journal of Wuhan University of Technology(Materials Science) 1994年第1期9卷 104-110页

作者：徐晓军胡熙庚刘金华 Wuhan Univ of Technology Wuhan China

This paper presents a study on the chemical properties of amino-carboxylmethyl cellulose (ACMC) and the mechanisms of the reac-tion of ACMC ivith copper ions and the depression of ACMC on CuSO4-ac-tivated stibnite. The results of XPS and IR analyses show that after CMC is treated by aqueous ammonia , amino-carboxyl groups form in CMC molecules by H-bonding action ivhich can complex selectively ivith copper ions to form copper-amino-carboxylmethyl cellulose. On the surface of CuSO4-activated stibnite, ACMC is also able to complex strongly with cop-per ions and forms a strong hydrophilic depression film. Because there are the obvious difference of reactions between ACMC ivith Cu2+ and ACMC ivith Hg2+ , the separation of cinnabar from stibnite is successfully realized using ACMC as depressant and CuSO4 as activator.

关键词： amino-carboxylmethyl cellulose stibnite chemical complex X-ray photoelectron spectroscopy infrared adsorption spec-trum

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FRACTIONATION OF SULFUR ISOTOPES IN CRYSTALS OF stibnite AND PYRITE

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Chinese Science Bulletin 1989年第14期34卷 1199-1202页

作者：张青莲 Department of Chemistry peking University Beijing

While the fractionation of sulfur isotopes is known to occur between neighboring deposits of two different minerals containing sulfur, little knowledge exists as regards such fractionation in a certain single sulfur-c... 详细信息

关键词： stibnite pyrite sulfur isotopes fractionation

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THE PULP ELECTROCHEMISTRY OF FLOTATION SEPARATION FOR stibnite-ARSENOPYRITE BULK CONCENTRATE

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Journal of Central South University 1998年第1期10卷 5-7页

作者： Ou Leming Feng Qiming Chen Jin(Department of Mineral Engineering, Central South University of Technology, Changsha 410083,China) Department of Mineral Engineering Central South University of Technology Changsha 410083 China

In the thermodynamics, for flotation separation of the SbAs bulk concentrate system there is no potential extent using butyl xanthate as collector. However in the kinetics, there exists 150 mV in reducing potential of butyl dixanthogen on the surface of stibnite and arsenopyrite. In this paper, their reducing kinetic difference of electrochemistry was confirmed by pure mineral flotation under controlled potential, the artificial SbAs bulk concentrate flotation separation and UVspectrophotometic analysis. The electrochemical separation of SbAs bulk concentrate has been carried out. qualified concentrate has been obtained. Sbconcentrate contains Sb 4944 %, As 044 %, Sbrecovery is 8783 % and Asconcentrate contains As 1096 %, Asrecovery is 9466 %.

关键词： flotation stibnite arsenopyrite butyl xanthate pulp electrochemistry

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Reduction of stibnite at Moderate Temperature

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Journal of Materials Science & Technology 1993年第2期9卷 136-138页

作者： Zhonghua LIU+ Chunpeng LIU, Dept. of Metallurgy, Kunming Institute of Technology, Kunming, 650093, China

Reduction of stibnite with hydrogen in the presence of calcium oxide has been experimentally inves- tigated at moderate temperature. The results reveal that the effluent generated in the reduction pro- cess contains much less air-polluting substance H_2S, and that the reaction activation energy is 63. 3 kJ/mol. The form of antimony changes considerably when the reaction temperature varies.

关键词： kinetics stibnite direct reduction

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Metal Extraction Process for High Grade stibnite of Kharan (Balochistan Pakistan)

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Journal of Minerals and Materials Characterization and Engineering 2017年第1期5卷 39-48页

作者： Irfan Hafeez Saqib Nasir Samreen Zahra Muhammad Aamir Zahid Mahmood Adnan Akram Mineral Processing Research Centre Pakistan Council of Scientific & Industrial Research Laboratories Complex Lahore Pakistan

A rapid and simple process has been developed for the recovery of antimony metal from stibnite ore of Kharan area (Balochistan) of Pakistan. The ore was characterized by X-ray diffraction (XRD) technique and found to contain 66% stibnite i.e. antimony sulfide (Sb2S3). The process parameters for the extraction of antimony were optimized on laboratory scale by varying reaction temperature from 900℃ - 1000℃, reaction time from 20 - 80 minutes and flux concentration was varied from 5 - 25 weight percent of the reaction mixture. The metal thus recovered with optimum conditions was evaluated by X-ray fluorescence (XRF) technique and was found to be more than 94% pure. The recovery yield calculated on the basis of stibnite present in the ore was 98.52%.

关键词： Antimony stibnite Extraction Recovery Yield

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Metallogenesis of the Baidi Au-Sb deposit, southwest Guizhou Province, China: mineralogical and geochemical evidence from sulfur-bearing minerals

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Acta Geochimica 2024年第2期43卷 199-213页

作者： Jun Yan Yong Xia Qinping Tan Zhuojun Xie Guosong Ji State KeyLaboratory of Ore Deposit Geochemistry Institute of GeochemistryChineseAcademy of SciencesGuiyang 550081China Guizhou InstituteofTechnology Guiyang550003China No.102 GeologicalTeam Guizhou Bureau of Geologyand Mineral Exploration&DevelopmentZunyi563003China

The Baidi Au-Sb deposit, which contains 8 t of Au and 10,979 Mt of Sb, is a typical and rare paragenetic deposit located in southwestern Guizhou Province, *** studies have focused on individual ores, but have not combined them to identify their paragenetic mechanism or metallogenic regularity. Therefore, we used field investigations, microscopic observations, and in situ analyses to identify the spatial distribution, mineral paragenesis, compositional evolution, and metallogenic material sources of the ore bodies. We also determined the Au and Sb paragenetic characteristics and the metallogenesis of the deposit. The main Au-bearing minerals in the deposit were early(Apy1–2) and late(Apy3) stage arsenopyrites, as well as pre-mineralization(Py1), mineralization(Py2–5), and late mineralization(Py6–7) stage pyrites. The main Sb-bearing minerals were stibnite(Snt), skinnerite, bournonite,and valentinite. The minerals formed in the order of Py1,Py2–3 + Apy1, Py4–5 + Apy2, Snt, and Py6–7 + *** δ34S values of the arsenopyrites and pyrites ranged from-5 to 5‰, while those of stibnite were mostly less than-5‰ in the later mineralization stages. Sulfur was provided by deep magmatic hydrothermal fluids, but sedimentary sulfur was added in the later stages. Moreover,the trace elemental contents fluctuated and eventually became similar to those of the sedimentary strata. By comprehensively considering the ores along with the geological characteristics of the deposit, we determined that deep magma provided the Au during ore formation. Later tectonic changes provided Sb from the sedimentary strata,which precipitated along fault expansion areas and produced Au and Sb paragenesis.

关键词： Au-Sb mineralization Arsenopyrite Pyrite stibnite Metallogenetic process

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