Features of Degassing of the Main Silicate Minerals in the Temperature Range 200–1000°C

IF 0.6 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS Solar System Research Pub Date : 2024-10-15 DOI:10.1134/S0038094624700515

S. A. Voropaev, N. V. Dushenko, A. P. Krivenko, V. S. Fedulov, E. V. Zharkova, V. G. Senin

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Abstract

The degassing of basic silicate minerals (olivines, pyroxenes, plagioclases) that make up mantle rocks similar in chemical composition to lunar mare basalts has been studied. A setup specially designed for these tasks was used, previously used in the study of chondrite degassing. The results of experimental studies on stepwise heating (without accumulation) with determination of the composition of released gases using gas chromatography methods in the temperature range from 200 to 1000°C are presented. The composition of the released gases was compared with the fugacity of oxygen in olivines. Raman and IR spectra of both the original minerals and minerals after isothermal annealing at various temperatures were obtained. Based on them, the course of thermal transformation of the crystalline structure of minerals was traced and estimates of their stability were obtained. The composition of silicate minerals was compared with samples of lunar soil delivered by the Chinese space mission Chang’e-5.

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主要硅酸盐矿物在 200-1000°C 温度范围内的脱气特征

对构成地幔岩石的基本硅酸盐矿物（橄榄石、辉石、斜长石）的脱气情况进行了研究，这些矿物的化学成分与月球赤铁矿玄武岩相似。使用了专门为这些任务设计的装置，该装置以前曾用于研究软玉脱气。本文介绍了在 200 至 1000°C 温度范围内使用气相色谱法测定释放气体成分的逐步加热（无累积）实验研究结果。释放气体的成分与橄榄石中氧的逸度进行了比较。获得了原始矿物和在不同温度下等温退火后矿物的拉曼光谱和红外光谱。在此基础上，对矿物晶体结构的热转变过程进行了追踪，并对其稳定性进行了估计。硅酸盐矿物的成分与中国嫦娥五号太空任务所运送的月球土壤样本进行了比较。

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来源期刊

Solar System Research 地学天文-天文与天体物理

CiteScore

1.60

自引率

33.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Solar System Research publishes articles concerning the bodies of the Solar System, i.e., planets and their satellites, asteroids, comets, meteoric substances, and cosmic dust. The articles consider physics, dynamics and composition of these bodies, and techniques of their exploration. The journal addresses the problems of comparative planetology, physics of the planetary atmospheres and interiors, cosmochemistry, as well as planetary plasma environment and heliosphere, specifically those related to solar-planetary interactions. Attention is paid to studies of exoplanets and complex problems of the origin and evolution of planetary systems including the solar system, based on the results of astronomical observations, laboratory studies of meteorites, relevant theoretical approaches and mathematical modeling. Alongside with the original results of experimental and theoretical studies, the journal publishes scientific reviews in the field of planetary exploration, and notes on observational results.