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首页> 外文期刊>Contributions to Mineralogy and Petrology >Experimental partitioning of halogens and other trace elements between olivine, pyroxenes, amphibole and aqueous fluid at 2 GPa and 900-1,300 °C
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Experimental partitioning of halogens and other trace elements between olivine, pyroxenes, amphibole and aqueous fluid at 2 GPa and 900-1,300 °C

机译：在2 GPa和900-1,300°C的温度下在橄榄石，辉石，闪石和水性流体之间进行卤素和其他微量元素的实验分配

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摘要

We present new partition coefficients for various trace elements including Cl between olivine, pyroxenes, amphibole and coexisting chlorine-bearing aqueous fluid in a series of high-pressure experiments at 2 GPa between 900 and 1,300 °C in natural and synthetic systems. Diamond aggregates were added to the experimental capsule set-up in order to separate the fluid from the solid residue and enable in situ analysis of the quenched solute by LA-ICP-MS. The chlorine and fluorine contents in mantle minerals were measured by electron microprobe, and the nature of OH defects was investigated by infrared spectroscopy. Furthermore, a fluorine-rich olivine from one selected sample was investigated by TEM. Results reveal average Cl concentrations in olivine and pyroxenes around 20 ppm and up to 900 ppm F in olivine, making olivine an important repository of halogens in the mantle.
机译：我们在900 G和1,300°C之间的2 GPa天然和合成系统中进行了一系列高压实验，给出了橄榄石，辉石，闪石和共存的含氯水性流体中各种Cl的新分配系数。将金刚石聚集体添加到实验性胶囊设置中，以便将液体与固体残留物分离，并通过LA-ICP-MS对淬灭的溶质进行原位分析。通过电子探针测量地幔矿物中的氯和氟含量，并通过红外光谱研究OH缺陷的性质。此外，通过TEM研究了来自一个选定样品的富氟橄榄石。结果表明，橄榄石和辉石中的平均Cl浓度约为20 ppm，橄榄石中的F含量高达900 ppm，这使得橄榄石成为地幔中卤素的重要储存库。

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