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~-5.7,两阶段Nd模式年龄变化范围为1.37 Ga到1.39 Ga(见图7). 5 讨论 5.1 岩浆来源 图5 浸铜湖花岗闪长斑岩及花岗斑岩的主量及微量元素组成变异图解 Fig. 5 Major and trace elements variation diagrams for granodiorite porphyries... are from Ref. [6]) 表2 浸铜湖铜钼矿中罗卜岭花岗闪长斑岩与花岗斑岩的微量元素成分(质量分数,10-6) Table 2 Trace element concentrations of Luoboling granodiorite porphyries and Jintonghu granites, Fujian province, SE China......
, SiO2 and TFe2O3, the minor components, are MgO and TiO2. In the process of weathering, some trace elements, such as Zr, Cr, V and Li, are enriched. Zr vs Hf and Nb vs Ta display the highest positive correlation. Trace elements show that Hanjiadian Formation is the main source of material for the bauxite formation, Huanglong Formation is the second important parent rock and there may be exist other......
, which suggest the geochemical behaviors of the trace elements of zircon in the metamorphic process. Based on this, the zircon U-Pb age is rationalized. Zircon U-Pb age information shows...础之上,对锆石U-Pb年龄进行合理解释,认为核部岩浆锆石年龄2 552 Ma代表研究区海底火山岩的喷发时限,变质重结晶锆石较小年龄2 520 Ma代表区域变质事件的时限.既而限定红透山铜锌矿的成矿时代在2 552 Ma,变质变形时代2 520 Ma.关键词:变质重结晶锆石；锆石微量元素；锆石U-Pb年代学；红透山铜锌矿Trace element geochemical and U-Pb......
Simultaneous determination of some trace metal impurities in high-purity sodium tungstate using coprecipitation and inductively coupled plasma atomic emission spectrometryMA Xiaoguo, KUANG Tongchun... that the elements mentioned above can be quantitatively recovered. The detection limits for Co, Cu, Fe, Mn, Ni, and Pb are 0.07, 0.4, 0.2, 0.1, 0.6, and 1.3 μg.g-1, respectively. The recoveries vary from 92.5......
. The relationships among indium, trace elements and main metal elements of wall rock and ore were introduced, as well as the relationships among indium content and distribution, and the typical characteristics of rare earth elements of igneous, wall rock and ore. The trace element analyses results suggest that indium enriches in the wall rock and varies in different lithologies, and indium......
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Influence of rare earth elements on corrosion behavior of Al-brass in marine water林高用,周玉雄,曾菊花,邹艳明,刘健,孙利平摘 要:The corrosion behaviors of Al-brass in stagnant...). It was demon-strated that RE elements could make the corrosion product layer more protective and strengthen the cohesion between the film and matrix in stagnant seawater. The electrochemical......
Influence of rare earth elements on corrosion behavior of Al-brass in marine water林高用,周玉雄,曾菊花,邹艳明,刘健,孙利平摘 要:The corrosion behaviors of Al-brass in stagnant...). It was demon-strated that RE elements could make the corrosion product layer more protective and strengthen the cohesion between the film and matrix in stagnant seawater. The electrochemical......
Effects of Rare Earth elements on microstructure evolution and mechanical properties of 718H pre-hardened mold steelHanghang Liu1,2,Paixian Fu1,2,Hongwei Liu1,2,Yanfei Cao1,2,Chen Sun1,3,2,Ningyu...) inhibition ability and impact energy as well as the isotropy.However,excessive addition of RE elements(0.07 wt%)seriously reduced the impact energy,ultimate tensile strength and FCG inhibition ability......
Effect of Anion on Adsorption of Rare Earth Elements on Kaolinite Wan Yingxin1,Liu Jianjun3 (1.The College of Arts and Sciences of Beijing Union University, Beijing 100083, China;2.The Institute... earth elements (REEs) on minerals and its controlling factors, adsorption experiments were performed with kaolin in a matrix of various concentration of anion (Cl-, ClO4-, SO42-) in the pH 6.5.......
