In this paper, we show that supercritical fluids have a greater significance in the generation of pegmatites, and for ore-forming processes related to granites than is usually assumed. We show that the supercritical melt or fluid is a silicate phase in which volatiles; principally H 2 O are completely miscible in all proportions at magmatic temperatures and pressures. This phase evolves from felsic melts and changes into hydrothermal fluids, and its unique properties are particularly important in sequestering and concentrating low abundance elements, such as metals. In our past research, we have focused on processes observed at upper crustal levels, however extensive work by us and other researchers have demonstrated that supercritical melt/ fluids should be abundant in melting zones at deep-crustal levels too. We propose that these fluids may provide a connecting link between lower and upper crustal magmas, and a highly efficient transport mechanism for usually melt incompatible elements. In this paper, we explore the unique features of this fluid which allow the partitioning of various elements and compounds, potentially up to extreme levels, and may explain various features both of mineralization and the magmas that produced them.

Rainer Thomas

Paul Davidson

Karen Appel

Acta Geochimica

ACTA GEOCHIMICA 是地球化学基础研究的国际论坛，该科学使用化学工具和原理来解释主要地质系统背后的机制，如地壳、海洋和整个太阳系，以及许多过程包括地幔对流、行星的形成以及花岗岩和玄武岩的起源。本刊关注但不限于以下几个方面：• 宇宙化学• 地幔地球化学• 矿床地球化学• 有机地球化学• 环境地球化学• 计算地球化学• 同位素地球化学• 纳米地球化学本刊发表的所有研究文章都经过了严格的同行评审。除了原创研究文章外，ACTA GEOCHIMICA 还发表评论和简短的通讯，旨在快速传播及时关注的研究成果，并对地球化学所有领域的新兴主题进行全面评论。

Acta Geochimica is an international forum for fundamental research in geochemistry, using chemical tools and principles to explain the mechanisms behind major geological systems, such as the crust, oceans, and the entire solar system. The journal covers various processes, including mantle convection, planetary formation, and the origins of granite and basalt. It focuses on, but is not limited to, the following areas: • Cosmochemistry • Mantle Geochemistry • Ore Deposit Geochemistry • Organic Geochemistry • Environmental Geochemistry • Computational Geochemistry • Isotope Geochemistry • Nanogeochemistry. All research articles published in this journal undergo rigorous peer review. In addition to original research articles, Acta Geochimica also publishes commentaries and brief communications aimed at rapidly disseminating timely research findings and providing comprehensive reviews on emerging topics across all fields of geochemistry.

《Acta Geochimica》是一个国际性的地球化学基础研究论坛，利用化学工具和原理来解释主要地质系统背后的机制，包括地壳、海洋及整个太阳系。研究内容涵盖多个过程，如地幔对流、行星形成，以及花岗岩和玄武岩的起源。本刊关注的领域包括但不限于：• 宇宙化学 • 地幔地球化学 • 矿床地球化学 • 有机地球化学 • 环境地球化学 • 计算地球化学 • 同位素地球化学 • 纳米地球化学。本刊发表的所有研究文章均经过严格的同行评审。除了原创研究文章外，《Acta Geochimica》还会发表评论和简短通讯，以快速传播及时关注的研究成果，并对地球化学各领域的新兴主题进行全面评论。

Category	Quartile
地球科学	4
地球科学, 地球化学与地球物理	4

The enhanced element enrichment in the supercritical states of granite–pegmatite systems

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Journal Info

Category	Quartile
GEOCHEMISTRY & GEOPHYSICS	3