The Chemical and Phase Composition of High Temperature Sublimates: Avachinsky Volcano, Kamchatka

IF 0.9 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Journal of Volcanology and Seismology Pub Date : 2025-08-19 DOI:10.1134/S0742046325700204

E. Yu. Plutakhina, N. A. Malik, I. Yu. Nikolaeva

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Abstract

This paper presents the results of a study of sublimates (mineral deposits from volcanic gases) that have been collected in silica tubes placed at high-temperature vents in the Eastern Fumarolic Field of Avachinsky Volcano, Kamchatka in 2013–2023. The ICP-MS and ICP-AES methods were used to obtain the concentration distributions for 62 elements throughout the tube lengths, i.e., along the temperature gradient. A total of 35 sublimate phases corresponding to naturally occurring minerals have been identified, in addition to 7 sublimate phases for which there are no naturally occurring analogues, or they are still unknown. The overall mineral sequence with decreasing temperature is as follows: Na and K halogenides; Na, K, and Ca sulphates; sulfides; As–S amorphous glass, and Tl, Pb, and Bi halogenides. The most abundant phases are As–S glass, SiO₂ (cristobalite), NaCl, KCl, Na₂SO₄‒K₂SO₄; rare phases: KCdCl₃, K₂Pb(SO₄)₂, Tl(I, Cl, Br), Pb₂Tl(Cl, I, Br)₅, PbTl₃(Cl, I, Br)₅, Pb(Cl, I, Br)₂, Tl₃BiI₆, ReS₂, the sulfides of Pb–Zn–Cd–In and AgI.

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堪察加半岛阿瓦钦斯基火山高温升华物的化学和物相组成

本文介绍了2013-2023年在堪察加半岛阿瓦钦斯基火山东部火山喷发区高温喷口的硅管中收集的升华物（火山气体中的矿床）的研究结果。采用ICP-MS和ICP-AES法测定了62种元素在整个管长（即沿温度梯度）上的浓度分布。与天然存在的矿物相对应的升华相共有35种，此外还有7种升华相没有天然存在的类似物，或者它们仍然未知。随着温度的降低，整体矿物序列为：Na、K卤化物；钠、钾、钙硫酸盐；硫化物;As-S非晶玻璃，以及Tl、Pb、Bi卤化物。最丰富的相为As-S玻璃、SiO2（方石英）、NaCl、KCl、Na2SO4-K2SO4；稀有相：KCdCl3， K2Pb(SO4)2, Tl(I, Cl, Br), Pb2Tl(Cl， I, Br)5, PbTl3(Cl， I, Br)5, Pb(Cl， I, Br)2, Tl3BiI6, ReS2， Pb - zn - cd - in和AgI的硫化物。

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来源期刊

Journal of Volcanology and Seismology 地学-地球化学与地球物理

CiteScore

1.50

自引率

28.60%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Volcanology and Seismology publishes theoretical and experimental studies, communications, and reports on volcanic, seismic, geodynamic, and magmatic processes occurring in the areas of island arcs and other active regions of the Earth. In particular, the journal looks at present-day land and submarine volcanic activity; Neogene–Quaternary volcanism; mechanisms of plutonic activity; the geochemistry of volcanic and postvolcanic processes; geothermal systems in volcanic regions; and seismological monitoring. In addition, the journal surveys earthquakes, volcanic eruptions, and techniques for predicting them.