Ab initio study of the structure and relative stability of MgSiO₄H₂ polymorphs at high pressures and temperatures
Natalia V. Solomatova, Razvan Caracas, Luca Bindi, and Paul D. Asimow

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Thermal conductivity of single-crystal brucite at high pressures: Implications for thermal anomaly in the shallow lower mantle
Yu-Hsiang Chien, Kai-Chi Wei, and Wen-Pin Hsieh

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Magmatic volatiles and platinum-group element mineralization in the Stillwater layered intrusion, U.S.A.
Amy P. Parker, Patricia L. Clay, Alan E. Boudreau, Ray Burgess, and Brian O’Driscoll

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Impact of fluorine on the thermal stability of phlogopite
Jiaqi Sun, Yan Yang, Jannick Ingrin, Zhongping Wang, and Qunke Xia

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Ferrous hydroxychlorides hibbingite [γ-Fe₂(OH)₃Cl] and parahibbingite [β-Fe₂(OH)₃Cl] as a concealed sink of Cl and H₂O in ultrabasic and granitic systems
Peter Koděra, Juraj Majzlan, Kilian Pollok, Stefan Kiefer, František Šimko, Eva Scholtzová, Jarmila Luptáková, and Grant Cawthorn

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Chukochenite, (Li_0.5Al_0.5)Al₂O₄, a new lithium oxyspinel mineral from the Xianghualing skarn, Hunan Province, China
Can Rao, Xiangping Gu, Rucheng Wang, Qunke Xia, Yuanfeng Cai, Chuanwan Dong, Frédéric Hatert, and Yantao Hao

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Ground-truthing the pyrite trace element proxy in modern euxinic settings
Daniel D. Gregory, Timothy W. Lyons, Ross R. Large, and Aleksandr S. Stepanov

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Interplay between fluid circulation and Alpine metamorphism in the Monte Rosa whiteschist from white mica and quartz in situ oxygen isotope analysis by SIMS
Cindy Luisier, Lukas P. Baumgartner, Anne-Sophie Bouvier, and Benita Putlitz

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Atomic-scale structure and non-stoichiometry of meteoritic hibonite: A transmission electron microscope study
Jangmi Han, Ichiro Ohnishi, Akira Yasuhara, and Lindsay P. Keller

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Synthesis, structure, and single-crystal elasticity of Al-bearing superhydrous phase B
Xinyang Li, Sergio Speziale, Konstantin Glazyrin, Franziska D.H. Wilke, Hanns-Peter Liermann, and Monika Koch-Müller

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Specific roles of sodium for the formation process of manganese-substituted octacalcium phosphate
Yuki Sugiura, Masanori Horie, Akira Tsuchiya, and Yoji Makita

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Oxygen isotope heterogeneity of olivine crystals in orogenic peridotites from Songshugou, North Qinling Orogen: Petrogenesis and geodynamic implications
Hong Yu, Hong-Fu Zhang, Haibo Zou, and Ji-Feng Xu

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Effects of arsenic on the distribution and mode of occurrence of gold during fluid-pyrite interaction: A case study of pyrite from the Qiucun gold deposit, China
He Zhang, Yuanfeng Cai, Gang Sha, Joël Brugger, Allan Pring, Pei Ni, Gujie Qian, Zhenjiao Luo, Yang Zhang, and Wei Tan

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Xuite, Ca₃Fe₂[(Al,Fe)O₃(OH)]₃, a new mineral of the garnet group: Implications for the wide occurrence of nanominerals
Seungyeol Lee and Xiaofeng Guo

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Raman spectroscopy-based screening of zircon for reliable water content and oxygen isotope measurements
Chuan-Mao Yang, Yi-Gang Xu, Xiao-Ping Xia, Yu-Ya Gao, Wan-Feng Zhang, Ya-Nan Yang, Qing Yang, and Le Zhang

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Halogen (F, Cl, Br, I) contents in silt and clay fractions of a Cambisol from a temperate forest
Tatjana Epp, Michael A.W. Marks, Harald Neidhardt, Yvonne Oelmann, and Gregor Markl

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Resolving sub-micrometer-scale zonation of trace elements in quartz using TOF-SIMS
Ryan North, Dominique Tanner, Mitchell Nancarrow, Bozana Pasic, and John A. Mavrogenes

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Hexagonal magnetite in Algoma-type banded iron formations of the ca. 2.52 Ga Baizhiyan Formation, North China: Evidence for a green rust precursor?
Longfei Sun, Maxwell Lechte, Xiaoying Shi, Xiqiang Zhou, Limin Zhou, Hao Fang, Baozeng Xie, Mengting Wu, and Dongjie Tang

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Presentation of the Dana Medal of the Mineralogical Society of America for 2021 to Sergey Krivovichev
Frank C. Hawthorne

Acceptance of the Dana Medal of the Mineralogical Society of America for 2021
Sergey V. Krivovichev

Presentation of the 2021 MSA Distinguished Public Service Medal to Denton Ebel
Michael K. Weisberg

Acceptance of the Distinguished Public Service Medal of the Mineralogical Society of America for 2021
Denton S. Ebel

Presentation of the Mineralogical Society of America Award for 2021 to Chenguang Sun
Yan Liang

Acceptance of the Mineralogical Society of America Award for 2021
Chenguang Sun

Presentation of the 2021 Roebling Medal of the Mineralogical Society of America to George Rossman
Edward Stolper

Acceptance of the 2021 Roebling Medal of the Mineralogical Society of America
George R. Rossman