High-temperature behavior of quartz-in-garnet system revealed by in situ Raman spectroscopy

IF 1.2 4区地球科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Physics and Chemistry of Minerals Pub Date : 2023-07-07 DOI:10.1007/s00269-023-01246-5

Marta Morana, Ross J. Angel, Matteo Alvaro, Boriana Mihailova

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Abstract

Quartz is one of the most abundant minerals in the Earth crust and therefore quartz inclusions in garnet are of great interest for elastic geobarometry, an approach that exploits the elastic properties of the mineral pair to back-calculate the conditions of inclusion entrapment. However, the high-temperature behavior of quartz inclusions close to the \(\alpha\)–\(\beta\) transition boundary has not been studied experimentally. We have therefore performed in situ high-temperature Raman spectroscopy on a quartz-in-garnet system up to 1000 K, and have also collected an improved reference data set for the temperature dependence of the Raman scattering of free quartz. Our results show that the \(\alpha\)-to-\(\beta\) phase transition is hindered by the stress imposed by the host on the quartz inclusion, resulting in a thermosalient effect of the whole host-inclusion system or a mechanical cracking of the host mineral.

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用原位拉曼光谱研究石英-石榴石体系的高温行为

石英是地壳中最丰富的矿物之一，因此石榴石中的石英包裹体对弹性地压测量有很大的兴趣，这种方法利用矿物对的弹性特性来反计算包裹体的包裹条件。然而，石英包裹体在\(\alpha\) - \(\beta\)过渡边界附近的高温行为尚未进行实验研究。因此，我们在高达1000 K的石榴石中石英系统上进行了原位高温拉曼光谱，并收集了自由石英拉曼散射温度依赖性的改进参考数据集。我们的研究结果表明，\(\alpha\) - \(\beta\)的相变受到寄主对石英包裹体施加的应力的阻碍，导致整个寄主-包裹体系统的热效应或寄主矿物的机械开裂。

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来源期刊

Physics and Chemistry of Minerals 地学-材料科学：综合

CiteScore

2.90

自引率

14.30%

发文量

审稿时长

3 months

期刊介绍： Physics and Chemistry of Minerals is an international journal devoted to publishing articles and short communications of physical or chemical studies on minerals or solids related to minerals. The aim of the journal is to support competent interdisciplinary work in mineralogy and physics or chemistry. Particular emphasis is placed on applications of modern techniques or new theories and models to interpret atomic structures and physical or chemical properties of minerals. Some subjects of interest are: -Relationships between atomic structure and crystalline state (structures of various states, crystal energies, crystal growth, thermodynamic studies, phase transformations, solid solution, exsolution phenomena, etc.) -General solid state spectroscopy (ultraviolet, visible, infrared, Raman, ESCA, luminescence, X-ray, electron paramagnetic resonance, nuclear magnetic resonance, gamma ray resonance, etc.) -Experimental and theoretical analysis of chemical bonding in minerals (application of crystal field, molecular orbital, band theories, etc.) -Physical properties (magnetic, mechanical, electric, optical, thermodynamic, etc.) -Relations between thermal expansion, compressibility, elastic constants, and fundamental properties of atomic structure, particularly as applied to geophysical problems -Electron microscopy in support of physical and chemical studies -Computational methods in the study of the structure and properties of minerals -Mineral surfaces (experimental methods, structure and properties)