文献类型：期刊文献

中文题名：Trace element partitioning between amphibole and hydrous silicate glasses at 0.6–2.6 GPa

英文题名：Trace element partitioning between amphibole and hydrous silicate glasses at 0.6–2.6 GPa

作者：Bo Zhang Xianxu Hu Peng Li Qizhe Tang Wenge Zhou

第一作者：Bo Zhang

机构：[1]Key Laboratory for High Temperature and High Pressure Study of the Earth's Interior, Institute of Geochemistry,Chinese Academy of Sciences;[2]University of Chinese Academy of Sciences;[3]Guizhou University of Finance and Economics;[4]Guizhou Institute of Technology

第一机构：Key Laboratory for High Temperature and High Pressure Study of the Earth's Interior, Institute of Geochemistry,Chinese Academy of Sciences

年份：2019

卷号：38

期号：3

起止页码：414-429

中文期刊名：地球化学学报（英文）

收录：Scopus;CSCD:【CSCD2019_2020】；

基金：financial support of the National Natural Science Foundation of China (Grant Nos. 41274105 and 41772043);the Joint Research Fund in Huge Scientific Equipment (U1632112) under cooperative agreement between NSFC and CAS;the Chinese Academy of Sciences ‘‘Light of West China’’ Program (Dawei Fan, 2017);Youth Innovation Promotion Association CAS (Dawei Fan, 2018);the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (XDB 18010401);the CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows (Grant No. 2017LH014);China Postdoctoral Science Foundation (Grant No. 2018M631104);the Guizhou Provincial Science and Technology Foundation (20171078);the Guizhou Institute of Technology Foundation (XJGC20130901)

语种：英文

中文关键词：Amphibole;Silicate;glass;Trace;elements;Partition;coefficients;Lattice;strain;model

外文关键词：Amphibole;Silicate glass;Trace elements;Partition coefficients;Lattice strain model

摘要：Partitioning behavior between amphibole and silicate glass of thirty-three minor and trace elements(Sc,Ti, V, Cr, Co, Rb, Sr, P, Y, Zr, Nb, Cs, Ba, K, La, Ce, Pr,Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, Pb,Th, and U) have been determined experimentally. Products of crystallization of hydrous basalt melts from 0.6 GPa/860 °C up to 2.6 GPa/970 °C were obtained in a multianvil apparatus. Major and trace element compositions of amphibole and glass were determined with a combination of electron microprobe and laser ablation inductively coupled plasma mass spectrometry. The main mineral phase is calcic amphibole, and the coexisting glass compositions are tonalite, granodiorite, and granite. The compatibility of rare earth elements increase at 915 °C and then decrease at 970 °C, but the compatibility of most of these elements shows a continued, significant increase with increasing pressure. For high-field strength elements, large ion lithophile elements, actinide compatibility decrease with increasing temperature or pressure, but transition metals show a continued increase in compatibility within the temperature–pressure conditions. From mathematical and graphical fitting, we determined best-fit values for the ideal ionic radius(r_0, 1.01–1.04 ?), the strain-free partitioncoefficient(D_0, 1.18–1.58), and apparent Young's modulus(E, 142–370 GPa) for the M4 site in amphibole according to the lattice strain model. The D_0^(M4) for rare earth elements rises at 915 °C and then drops at 970 °C at 0.6 GPa.However, the D_0^(M4) values are positively proportional to the pressure for rare earth elements in the amphibole-glass pairs at 0.6–2.6 GPa and 970 °C. Furthermore, the derived best-fit values for r_0^(M4) and E^(M4) are almost constant and trend to increase with rising temperature and pressure,respectively. The partition coefficient is distinctly different for different melt compositions. The rare earth elements become more enriched in amphibole if the quenched glass is granodiorite or granite compared to the tonalitic glasses.
Partitioning behavior between amphibole and silicate glass of thirty-three minor and trace elements(Sc,Ti, V, Cr, Co, Rb, Sr, P, Y, Zr, Nb, Cs, Ba, K, La, Ce, Pr,Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, Pb,Th, and U) have been determined experimentally. Products of crystallization of hydrous basalt melts from 0.6 GPa/860 °C up to 2.6 GPa/970 °C were obtained in a multianvil apparatus. Major and trace element compositions of amphibole and glass were determined with a combination of electron microprobe and laser ablation inductively coupled plasma mass spectrometry. The main mineral phase is calcic amphibole, and the coexisting glass compositions are tonalite, granodiorite, and granite. The compatibility of rare earth elements increase at 915 °C and then decrease at 970 °C, but the compatibility of most of these elements shows a continued, significant increase with increasing pressure. For high-field strength elements, large ion lithophile elements, actinide compatibility decrease with increasing temperature or pressure, but transition metals show a continued increase in compatibility within the temperature–pressure conditions. From mathematical and graphical fitting, we determined best-fit values for the ideal ionic radius(r_0, 1.01–1.04 ?), the strain-free partitioncoefficient(D_0, 1.18–1.58), and apparent Young's modulus(E, 142–370 GPa) for the M4 site in amphibole according to the lattice strain model. The D_0^(M4) for rare earth elements rises at 915 °C and then drops at 970 °C at 0.6 GPa.However, the D_0^(M4) values are positively proportional to the pressure for rare earth elements in the amphibole-glass pairs at 0.6–2.6 GPa and 970 °C. Furthermore, the derived best-fit values for r_0^(M4) and E^(M4) are almost constant and trend to increase with rising temperature and pressure,respectively. The partition coefficient is distinctly different for different melt compositions. The rare earth elements become more enriched in amphibole if the quenched glass is granodiorite or granite compared to the tonalitic glasses.