文献类型：期刊文献

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

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

第一作者：Zhang, Bo

通信作者：Zhou, WG[1]

机构：[1]Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths In, Guiyang 550081, Guizhou, Peoples R China;[2]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[3]Guizhou Univ Finance & Econ, Guiyang 550025, Guizhou, Peoples R China;[4]Guizhou Inst Technol, Guiyang 550003, Guizhou, Peoples R China

第一机构：Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths In, Guiyang 550081, Guizhou, Peoples R China

通信机构：corresponding author), Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths In, Guiyang 550081, Guizhou, Peoples R China.

年份：2019

卷号：38

期号：3

起止页码：414-429

外文期刊名：ACTA GEOCHIMICA

收录：EI(收录号：20191106619145);Scopus(收录号：2-s2.0-85062656458);WOS:【ESCI(收录号:WOS:000465374500008)】；

基金：We wish to thank Ms. Zhihui Dai for her assistance during LA-ICP-MS analyses. This work benefited from the 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), and China Postdoctoral Science Foundation (Grant No. 2018M631104), the Guizhou Provincial Science and Technology Foundation (20171078), and the Guizhou Institute of Technology Foundation (XJGC20130901).

语种：英文

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 0.6GPa/860 degrees C up to 2.6GPa/970 degrees C were obtained in a multi-anvil 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 degrees C and then decrease at 970 degrees 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 partition coefficient (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 D0M4 for rare earth elements rises at 915 degrees C and then drops at 970 degrees C at 0.6GPa. However, the D0M4 values are positively proportional to the pressure for rare earth elements in the amphibole-glass pairs at 0.6-2.6GPa and 970 degrees C. Furthermore, the derived best-fit values for r0M4 and EM4 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.