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A Review on the Elemental and Isotopic Geochemistry of Gallium
Global Biogeochemical Cycles ( IF 5.4 ) Pub Date : 2021-09-10 , DOI: 10.1029/2021gb007033
Wei Yuan 1 , JiuBin Chen 1 , Henry Teng 1 , Benjamin Chetelat 1 , Hongming Cai 1 , Jincun Liu 1 , Zaicong Wang 2 , Julien Bouchez 3 , Frederic Moynier 3 , Jérôme Gaillardet 3 , Jacques Schott 4 , Congqiang Liu 1
Affiliation  

Gallium exhibits weak metallic properties owing to its proximity to non-metals in the periodic table, yet is volatile in extra-terrestrial bodies and fairly reactive in nature. It has been used extensively to elucidate the Solar System evolution, planet interior differentiation, and terrestrial processes. However, Ga speciation and transformation in various planetary compartments and the dynamics of its trans-reservoir pathways remain to be fully resolved. Although recent studies and the development of modern analytical techniques for Ga isotopes have markedly improved our understanding of Ga geochemistry, a systematical summary of state-of-the-art knowledge appears to be long overdue. Here we provide an overview of the geochemical properties of Ga in different reservoirs, including meteorites and Earth's interior and exterior compartments, and a timely review of Ga isotopic geochemistry. We also provide a first tentative estimate of total masses of Ga in different compartments and the trans-reservoir Ga flux, based on the published data. This compilation reveals clearly the lack of geochemistry data of Ga in Earth's interior, the imbalance of oceanic Ga budget and the potential implications of Ga isotopes, stimulating future systematic studies of Ga and its isotopes in geosciences and related fields.

中文翻译:

镓元素和同位素地球化学研究述评

镓由于接近元素周期表中的非金属而表现出微弱的金属特性,但在地外物体中易挥发且性质相当活泼。它已被广泛用于阐明太阳系演化、行星内部分化和地球过程。然而,各种行星隔间中的 Ga 物种形成和转化及其跨储层路径的动力学仍有待完全解决。尽管最近对 Ga 同位素的研究和现代分析技术的发展显着提高了我们对 Ga 地球化学的理解,但对最先进知识的系统总结似乎早就应该了。在这里,我们概述了不同储层中 Ga 的地球化学特性,包括陨石和地球的内部和外部隔间,以及对 Ga 同位素地球化学的及时回顾。我们还根据已发布的数据提供了不同隔间中 Ga 总质量和跨储层 Ga 通量的初步估计。该汇编清楚地揭示了地球内部Ga地球化学数据的缺乏、海洋Ga收支的不平衡以及Ga同位素的潜在影响,激发了未来地球科学及相关领域对Ga及其同位素的系统研究。
更新日期:2021-09-27
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