全反射X射线荧光光谱法研究Vuoriyarvi碳酸盐岩磷灰石中稀土元素和锶的分布：初步结果和展望

IF 1.2 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Russian Geology and Geophysics Pub Date : 2023-05-30 DOI:10.2113/rgg20234580

E. Kozlov, A. Maltsev, E. Fomina, M. Sidorov, A. N. Zhilicheva, S. V. Panteeva, A. Kompanchenko, A. Chernyavskiy

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引用次数: 1

摘要

我们研究了俄罗斯西北部科拉地区Vuoriyarvi碱性-超基性碳酸盐岩杂岩的几种碳酸盐和伴生磷灰石矿石中磷灰石的微量元素组成，该杂岩拥有多个磷灰石-磁铁矿和焦绿铁矿的商业矿床以及大规模未勘探的稀土矿。采用全反射x射线荧光光谱法(TXRF)分析了磷灰石的成分。通过对磷灰石单矿物样品的称重部分进行ICP-MS分析来验证所得结果。结果表明，在Vuoriyarvi碳酸盐岩及其伴生磷灰石磁铁矿的演化过程中，磷灰石中锶、稀土元素含量及稀土分选度同步升高。获得的碳酸盐杂岩中磷灰石组成的TXRF数据显示了TXRF的有效性和在各种地质对象磷灰石的应用和基础研究方面的巨大潜力。

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Study of the Distribution of Rare-Earth Elements and Strontium in Apatite from Rocks of the Vuoriyarvi Carbonatite Complex by Total-Reflection X-Ray Fluorescence Spectrometry (TXRF): First Results and Prospects

—We have studied the trace element composition of apatite from several varieties of carbonatites and associated apatite ores of the Vuoriyarvi alkaline-ultrabasic carbonatite complex (Kola region, northwestern Russia), which hosts several commercial deposits of apatite–magnetite and pyrochlore ores and large-scale unexplored rare-earth mineral occurrences. The composition of apatite was analyzed by total-reflection X-ray fluorescence spectrometry (hereafter, TXRF). Verification of the obtained results was carried out by ICP-MS analysis of weighed portions of apatite monomineral samples. It is shown that during the evolution of the Vuoriyarvi carbonatites and associated apatite–magnetite ores, the contents of Sr and rare-earth elements (REE) and the degree of REE fractionation in apatite synchronously increased. The obtained TXRF data on the composition of apatite in the carbonatite complex demonstrate the efficiency of TXRF and its high potential in both applied and fundamental research concerned with apatite of various geologic objects.

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来源期刊

Russian Geology and Geophysics 地学-地球科学综合

CiteScore

2.00

自引率

18.20%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal publishes original reports of theoretical and methodological nature in the fields of geology, geophysics, and geochemistry, which contain data on composition and structure of the Earth''s crust and mantle, describes processes of formation and general regularities of commercial mineral occurrences, investigations on development and application of geological-geophysical methods for their revealing. As to works of regional nature, accelerated publication are available for original papers on a variety of problems of comparative geology taking into account specific character of Siberia, adjacent Asian countries and water areas. The journal will also publish reviews, critical articles, chronicle of the most important scientific events, and advertisements.