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四川麦架沟铜多金属矿成矿地质条件浅析
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作者 杨元良 王吉勇 《四川有色金属》 2023年第3期25-28,50,共5页
结合地质找矿工作实践,选取四川麦架沟铜多金属矿为研究对象,通过收集、研究前人区域地质调查、矿产勘查成果,在总结区域地质背景和勘查区地质特征的基础上,对铜多金属矿的成矿地质条件进行研究。认为该矿的赋矿地层为三叠系博峪河组一... 结合地质找矿工作实践,选取四川麦架沟铜多金属矿为研究对象,通过收集、研究前人区域地质调查、矿产勘查成果,在总结区域地质背景和勘查区地质特征的基础上,对铜多金属矿的成矿地质条件进行研究。认为该矿的赋矿地层为三叠系博峪河组一段,岩性为变质细砂岩与板岩互层,铜、金矿(化)体受控于中寨向斜西翼顺层分布的层间破碎带,呈透镜状、不规则状产出。矿石以细粒粒状结构、细脉浸染状构造为主,有用组分为黄铜矿、黄铁矿及自然金,矿床成因类型属热液充填脉型铜、金矿床。 展开更多
关键词 铜矿、金矿 床地质特征 成矿地质条件 四川 麦架沟
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Formation and evolution of secondary minerals during bioleaching of chalcopyrite by thermoacidophilic Archaea Acidianus manzaensis 被引量:2
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作者 刘红昌 夏金兰 +5 位作者 聂珍媛 文闻 杨云 马陈燕 郑雷 赵屹东 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第9期2485-2494,共10页
The formation and evolution of secondary minerals during bioleaching of chalcopyrite by thermoacidophilic Archaea Acidianus manzaensis were analyzed by combining synchrotron radiation X-ray diffraction(SR-XRD) and S... The formation and evolution of secondary minerals during bioleaching of chalcopyrite by thermoacidophilic Archaea Acidianus manzaensis were analyzed by combining synchrotron radiation X-ray diffraction(SR-XRD) and S, Fe and Cu Kα X-ray absorption near edge structure(XANES) spectroscopy. Leaching experiment showed that 82.4% of Cu2+ was dissolved by A. manzaensis after 10 d. The surface of chalcopyrite was corroded apparently and covered with leaching products. During bioleaching, the formation and evolution of secondary minerals were as follows: 1) little elemental sulfur, jarosite, bornite and chalcocite were found at days 2 and 4; and 2) bornite and chalcocite disappeared, covellite formed, and jarosite gradually became the main component at days 6 and 10. These results indicated that metal-deficiency sulfides chalcocite and bornite were first formed with a low redox potential value(360-461 m V), and then gradually transformed to covellite with a high redox potential value(461-531 m V). 展开更多
关键词 BIOLEACHING CHALCOPYRITE Acidianus manzaensis secondary minerals FORMATION EVOLUTION
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Tolerance of Grasses to Heavy Metals and Microbial Functional Diversity in Soils Contaminated with Copper Mine Tailings 被引量:19
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作者 TENG Ying LUO Yong-Ming +3 位作者 HUANG Chang-Yong LONG Jian LI Zhen-Gao P. CHRISTIE 《Pedosphere》 SCIE CAS CSCD 2008年第3期363-370,共8页
Copper (Cu) mine tailings, because of their high content of heavy metals, are usually hostile to plant colonization. A pot experiment was conducted to determine the tolerance of four forage grasses to heavy metals i... Copper (Cu) mine tailings, because of their high content of heavy metals, are usually hostile to plant colonization. A pot experiment was conducted to determine the tolerance of four forage grasses to heavy metals in Cu mine tailings and to examine the variation in the microbial functional diversity of soils from the tailing sites in southern China. All the four grass species survived on Cu mine tailings and Cu mine tailing-soil mixture. However, on pure mine tailings, the growth was minimal, whereas the growth was maximum for the control without mine tailings. The tolerance of grasses to heavy metals followed the sequence: Paspalum notatum 〉 Festuea arundinaeea 〉 Lolium perenne 〉 Cynodon daetylon. The planting of forage grasses enhanced the soil microbial biomass. The Biolog data indicated that the soil microbial metabolic profile values (average well color development, community richness, and Shannon index) of the four forage grasses also followed the sequence: P. notatum 〉 F. arundinaeea 〉 L. perenne 〉 C. daetylon. Thus, P. notatum, under the experimental conditions of this study, may be considered as the preferred plant species for revegetation of Cu mine tailing areas. 展开更多
关键词 copper mine tailings forage grass heavy metal pollution microbial functional diversity
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Effect of Composts,Lime and Diammonium Phosphate on the Phytoavailability of Heavy Metals in a Copper Mine Tailing Soil 被引量:21
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作者 M.J.KHAN D.L.JONES 《Pedosphere》 SCIE CAS CSCD 2009年第5期631-641,共11页
Soil samples from a historic copper mine tailing site at the Parys Mountain,North Wales(UK) were amended with green waste compost(GC),GC+30% sewage sludge(GCS),lime and diammonium phosphate(DAP),to determine the effec... Soil samples from a historic copper mine tailing site at the Parys Mountain,North Wales(UK) were amended with green waste compost(GC),GC+30% sewage sludge(GCS),lime and diammonium phosphate(DAP),to determine the effect of amendments on DTPA-and Ca(NO3)2-extractable metals in the mine tailing and on the phytoavailability of heavy metals by a lettuce(Lactuca sativa L.).Both compost were added at the rate of 10% by weight,lime was added as calcium carbonate equivalent(pH = 7) and DAP at a 2300 mg kg-1 soil level.The experiment was arranged in randomised complete design with three replicates in pots under control environment.Addition of lime resulted in the largest reduction in metal extractability with DTPA and Ca(NO3)2 and phytoavailability of Cu,Fe and Zn while DAP was effective in lowering Pb extractability and phytoavailability.With exception of Zn,all other metals extracted decreased with time after amendment applications.The distribution of heavy metals between and within the four procedures of potentially bioavailable sequential extraction(PBASE) varied significantly(P < 0.001).Stronger relationships were noted between the metals extracted with PBASE SE1 and Cu,Pb(P < 0.01) and Fe(P < 0.001) in the lettuce.These results indicate that addition of lime is sufficient to restore the vegetative cover to a high metal mine waste while DAP is good for stabilizing Pb,but its detrimental role on plant growth and the risk associated with presence of N in DAP(through N leaching) may restrict its chances for remediation of contaminated sites. 展开更多
关键词 LETTUCE metal uptake potentially bioavailable sequential extraction
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Role and maintenance of redox potential on chalcopyrite biohydrometallurgy:An overview 被引量:1
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作者 HUANG Xiao-tao LIAO Rui +9 位作者 YANG Bao-jun YU Shi-chao WU Bai-qiang HONG Mao-xin WANG Jun ZHAO Hong-bo GAN Min JIAO Fen QIN Wen-qing QIU Guan-zhou 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第5期1351-1366,共16页
Chalcopyrite is one of the most important copper minerals;however,the extracted efficiency of chalcopyrite is still not satisfactory in hydrometallurgy owing to its high lattice energy which leads to its low dissoluti... Chalcopyrite is one of the most important copper minerals;however,the extracted efficiency of chalcopyrite is still not satisfactory in hydrometallurgy owing to its high lattice energy which leads to its low dissolution kinetics.To overcome the difficulties,many advanced technologies have been developed,including the selection of high effectively bacteria,the inhibition of the passivation film adhered onto the minerals surface,and the maintenance of solution redox potential under an optimum range.Up to date,considerable researches on the first two terms have been summarized,while the overview of the last term has been rarely reported.Based on corresponding works in recent years,key trends and roles of solution redox potential in copper hydrometallurgy,including its definition,effect and maintenance,have been introduced in this review. 展开更多
关键词 CHALCOPYRITE copper minerals solution potential hydrometallurgy process
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Geological characteristics and metallogenic prognosis of main gold deposit in Altai gold ore belt, Xinjiang
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作者 SHENYuan-chao SHENPing ZHENGQing-dong LILTTie-bing LIGuang-ming 《Journal of Geoscientific Research in Northeast Asia》 2004年第1期46-51,共6页
Altai polymetallic mineralization belt is famous copper-polymetallic mineralization belt in the world. There are a lot of gold deposits in the Altai ore belt in Xinjiang, China. These gold deposits belong to two genet... Altai polymetallic mineralization belt is famous copper-polymetallic mineralization belt in the world. There are a lot of gold deposits in the Altai ore belt in Xinjiang, China. These gold deposits belong to two genetic types: volcanogene late-stage hydrothermal type and fractured altered rock type. The authors discuss mainly the geological and mineralized features of fractured altered rock type of gold deposits in Altai gold ore belt. Base on this study, the metallogenic law is summarized and the deep metallogenic prognosis has been done in Duolanasayi and Tuokuzibayi gold deposits, and some mineralized anomalys have been discovered. 展开更多
关键词 Altai gold ore belt mineralization law metallogenic prognosis EH-4 measurement of continuous electrical conductivity mineralized anomaly gold deposit
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Iron-Oxide Cu-Au Mineralizing Systems: Eastern Yakutia Perspective
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作者 Aleksey Kostin 《Journal of Environmental Science and Engineering(B)》 2012年第9期1045-1053,共9页
The GIS (geographic information system) used for predicting the associated with upper-intrusive zone of hydrothermal alteration IOCG (iron-oxide copper gold) mineralizing systems is shown by example of the northea... The GIS (geographic information system) used for predicting the associated with upper-intrusive zone of hydrothermal alteration IOCG (iron-oxide copper gold) mineralizing systems is shown by example of the northeast of Russian. IOCG ore deposits can have enormous geological resources with significant reserves of base, precious and strategic metals, are economically attractive targets for mineral exploration worldwide, but are still unknown in the northeast Russian. It was localized in Tarinskiy ore node (eastern Yakutia) field of brecciated altered rocks with sulfide and iron-oxide cement is a first in eastern Yakutia nature anomaly of IOCG-type with iron-oxide Cu-Au ± U specialization, that was formed close to the surface of Rep-Yuruinskiy pluton. It should be of interest as a new precious metals world class deposit type in northeast of Russia. 展开更多
关键词 GIS iron oxide-Cu-Au ± U Rep-Yuruinskiy Tarinskiy ore node.
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Geological characteristics and mineralization setting of the Zhuxi tungsten(copper) polymetallic deposit in the Eastern Jiangnan Orogen 被引量:25
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作者 CHEN GuoHua SHU LiangShu +2 位作者 SHU LiMin ZHANG Cheng OUYANG YongPeng 《Science China Earth Sciences》 SCIE EI CAS CSCD 2016年第4期803-823,共21页
The Zhuxi ore deposit is a super-large scheelite(copper) polymetallic deposit discovered in recent years. It grew above copper/tungsten-rich Neoproterozoic argilloarenaceous basement rocks and was formed in the contac... The Zhuxi ore deposit is a super-large scheelite(copper) polymetallic deposit discovered in recent years. It grew above copper/tungsten-rich Neoproterozoic argilloarenaceous basement rocks and was formed in the contact zone between Yanshanian granites and Carboniferous-Permian limestone. Granites related to this mineralization mainly include equigranular, middle- to coarse-grained granites and granitic porphyries. There are two mineralization types: skarn scheelite(copper) and granite scheelite mineralization. The former is large scale and has a high content of scheelite, whereas the latter is small scale and has a low content of scheelite. In the Taqian-Fuchun Basin, its NW boundary is a thrust fault, and the SE boundary is an angular unconformity with Proterozoic basement. In Carboniferous-Permian rock assemblages, the tungsten and copper contents in the limestone are both very high. The contents of major elements in granitoids do not differ largely between the periphery and the inside of the Zhuxi ore deposit. In both areas, the values of the aluminum saturation index are A/CNK>1.1, and the rocks are classified as potassium-rich strongly peraluminous granites. In terms of trace elements, compared to granites on the periphery of the Zhuxi ore deposit, the granites inside the Zhuxi ore deposit have smaller d Eu values, exhibit a significantly more negative Eu anomaly, are richer in Rb, U, Ta, Pb and Hf, and are more depleted in Ba, Ce, Sr, La and Ti, which indicates that they are highly differentiated S-type granites with a high degree of evolution. Under the influence of fluids, mineralization of sulfides is evident within massive rock formations inside the Zhuxi ore deposit, and the mean SO_3 content is 0.2%. Compared to peripheral rocks, the d Eu and total rare earth element(REE) content of granites inside the Zhuxi ore deposit are both lower, indicating a certain evolutionary inheritance relationship between the granites on the periphery and the granites inside the Zhuxi ore deposit. For peripheral and ore district plutons, U-Pb zircon dating shows an age range of 152–148 Ma. In situ Lu-Hf isotope analysis of zircon in the granites reveals that the calculated e_(Hf)(t) values are all negative, and the majority range from -6 to -9. The T_(DM2) values are concentrated in the range of 1.50–1.88 Ga(peak at 1.75 Ga), suggesting that the granitic magmas are derived from partial melting of ancient crust. This paper also discusses the metallogenic conditions and ore-controlling conditions of the ore district from the perspectives of mineral contents, hydrothermal alteration, and ore-controlling structures in the strata and the ore-bearing rocks. It is proposed that the Zhuxi ore deposit went through a multistage evolution, including oblique intrusion of granitic magmas, skarn mineralization, cooling and alteration, and precipitation of metal sulfides. The mineralization pattern can be summarized as "copper in the east and tungsten in the west, copper at shallow-middle depths and tungsten at deep depths, tungsten in the early stage and copper in the late stage". 展开更多
关键词 Tungsten(copper) polymetallic deposit Late Mesozoic granites Carboniferous-Permian carbonate rocks Skarn mineralization Zhuxi ore deposit Eastern Jiangnan Orogen
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