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Article

The Study of Crystal Structure on Grossular–Andradite Solid Solution

by
Yichuan Wang
1,2,
Qiang Sun
1,2,
Dengfei Duan
3,
Xinjian Bao
1,2,4,* and
Xi Liu
1,2,*
1
Key Laboratory of Orogenic Belts and Crustal Evolution, MOE, Peking University, Beijing 100871, China
2
School of Earth and Space Sciences, Peking University, Beijing 100871, China
3
College of Resources and Environment, Yangtze University, Wuhan 430074, China
4
China Automotive Battery Research Institute Co., Ltd., Beijing 100088, China
*
Authors to whom correspondence should be addressed.
Minerals 2019, 9(11), 691; https://doi.org/10.3390/min9110691
Submission received: 11 September 2019 / Revised: 31 October 2019 / Accepted: 5 November 2019 / Published: 8 November 2019
(This article belongs to the Section Crystallography and Physical Chemistry of Minerals & Nanominerals)
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Abstract

The effects of Al3+–Fe3+ substitution on 10 synthesized garnet samples along the grossular–andradite binary solid solution were investigated using both powder and single-crystal X-ray diffraction. Results showed that cell volume increased with andradite content. Small negative excess volume was observed in the Al-rich samples. By measuring the bond length, polyhedral volume, octahedral distortion parameter (σ), and tetrahedral rotation angle (α), we determined that the distortion occurred on the dodecahedral site. The width of the diffraction peaks was obviously related to the composition of the solid solution. Full width at half maximum of diffraction peaks was used to calculate the microstrain, which may have a relationship with enthalpy of mixing.
Keywords: grossular–andradite; X-ray diffraction; bond length; excess volume; distortion grossular–andradite; X-ray diffraction; bond length; excess volume; distortion

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MDPI and ACS Style

Wang, Y.; Sun, Q.; Duan, D.; Bao, X.; Liu, X. The Study of Crystal Structure on Grossular–Andradite Solid Solution. Minerals 2019, 9, 691. https://doi.org/10.3390/min9110691

AMA Style

Wang Y, Sun Q, Duan D, Bao X, Liu X. The Study of Crystal Structure on Grossular–Andradite Solid Solution. Minerals. 2019; 9(11):691. https://doi.org/10.3390/min9110691

Chicago/Turabian Style

Wang, Yichuan, Qiang Sun, Dengfei Duan, Xinjian Bao, and Xi Liu. 2019. "The Study of Crystal Structure on Grossular–Andradite Solid Solution" Minerals 9, no. 11: 691. https://doi.org/10.3390/min9110691

APA Style

Wang, Y., Sun, Q., Duan, D., Bao, X., & Liu, X. (2019). The Study of Crystal Structure on Grossular–Andradite Solid Solution. Minerals, 9(11), 691. https://doi.org/10.3390/min9110691

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