American Mineralogist

Volume 110, Issue no. 07 : July 2025

Letter

MSA Presidential Address

1   MSA at 100 and why optical mineralogy still matters: The optical properties of talc
Mickey E. Gunter
REGULAR ARTICLES

1012 Correlations between the structural and impurity features reveal fluctuant growth conditions of natural fibrous diamonds
Chengyang Sun, Mingyue He, Taijin Lu, Shinji Muraishi, and Yi Deng

Abstract     Members Full Text Download           Deposit Item

1024 Effect of layer charge density and charge location on the swelling of smectite: Implications for geological storage of CO2 and high-level nuclear waste
Paolo Andre D. Benavides and Stephen Guggenheim

Abstract     Members Full Text Download      

1034 Kyanite-muscovite-dumortierite vein mineralization mechanisms from advanced microstructural analysis using EBSD
Sneha Dandekar, Elisabetta Mariani, Tushar R. Dandekar, Rajesh K. Khatirkar, Kavita Pande, Joseph Gardner, Heath Bagshaw, Kirtikumar Randive, and Dilip Peshwe

Abstract     Members Full Text Download           Deposit Item

1046 Equilibrium oxygen isotope fractionation in Mg(OH)2-Ca(OH)2-H2O: Insights from in situ high-temperature and high-pressure vibrational spectroscopy
Xi Zhu, Yu Ye, Yancheng Hu, Sha Wang, Yunfan Miao, Dan Liu, Qingbo Wang, Zhen Wu, and Yanming Pan

Abstract     Members Full Text Download           Deposit Item

1060 Analcime-wairakite formation during experimental cement-bentonite alteration at 200‐300 °C
Amber Zandanel, Kirsten B. Sauer, Marlena J. Rock, Florie A. Caporuscio, Carlos F. Jové-Colón, and Edward N. Matteo

Abstract     Members Full Text Download           Deposit Item

1072 Structural mechanisms of pressure-induced isosymmetric second-order phase transitions
Qifa Zhong, Jingui Xu, Dongzhou Zhang, Shanrong Zhang, Mengzeng Wu, Hailing Gu, Yi Zhou, and Dawei Fan

Abstract     Members Full Text Download           Deposit Item

1082 A first-principles investigation on the enthalpy landscape for the hibonite solid solution: Implications for a nebular barometer
Pierre-Marie Zanetta, Abhishek Kumar Thakur, Venkateswara Manga, Krishna Muralidharan, and Thomas J. Zega

Abstract     Members Full Text Download           Deposit Item

1094 Oboniobite (Mg4Nb2O9), a new magnesic-niobic oxide mineral from the Bayan Obo deposit, China
Hai-Dong She, Hong-Rui Fan, Xiang-Ping Gu, Xiao-Chun Li, Kui-Feng Yang, Qi-Wei Wang, Hai-Long Jin, Biao Chen, and Yong-Xin Pan

Abstract     Members Full Text Download           Deposit Item

1105 Hoperanchite, (NH4)2(S2O3), a new mineral from an active vent in a burning bituminous shale
Anthony R. Kampf, Paul M. Adams, Chi Ma, and David K. Lynch

Abstract     Members Full Text Download           Deposit Item

1112 Deciphering the origin of low-grade W mineralization and hydrothermal fluids in the oxidized Fujiashan W skarn deposit using garnet geochemistry
Yunhao Ji, Gui Qing Xie, Simon M. Jowitt, Denis Fougerouse, Wei Li, and Bin Fu

Abstract     Members Full Text Download           Deposit Item

1127 The valence states of Nb and Ta in magmatic-hydrothermal systems: Insights from combined SXAS and XPS analyses of titanite and ilmenite in two Chinese anorogenic suites
Yu-Xiang Zhu, Yuanming Pan, Lian-Xun Wang, Zhenbing She, Renfei Feng, Ning Chen, Sarah Purdy, and Kenan Cao

Abstract     Members Full Text Download           Deposit Item

1149 Mineralogical characterization of the Seffner fulgurite, Florida: Insights into lightning-induced petrogenesis
Marta Morana, Matthew A. Pasek, Tiziano Catelani, and Luca Bindi

Abstract     Members Full Text Download           Deposit Item

Supplements

Welcome to MSA/American Mineralogist Supplemental Materials. These are free to all readers. Discover extra tables, supplemental data, CIFs, appendices, extra figures, and in the future “methods sections”. To find previous issues, go to that Table of Contents and click on the link. We ask that all materials be cited so that credit is given to the authors and American Mineralogist. The pure datasets are not copyrightable. All other material is copyrighted by the authors.

American Mineralogist      Vol. 107, no. 1   January 2022

15    Boron isotope compositions establish the origin of marble from metamorphic complexes: Québec, New York, and Sri Lanka
Corinne Kuebler, Antonio Simonetti, Stefanie S. Simonetti, and Robert F. Martin

Item #AM-22-17811
Online Material
AM-22-17811.zip zipped


31    Celleriite, (Mn22+Al)Al6(Si6O18)(BO3)3(OH)3(OH), a new mineral species of the tourmaline supergroup
Ferdinando Bosi, Federico Pezzotta, Alessandra Altieri, Giovanni B. Andreozzi, Paolo Ballirano, Gioacchino Tempesta, Jan Cempírek, Radek Škoda, Jan Filip, Renata Čopjaková, Milan Novák, Anthony R. Kampf, Emily D. Scribner, Lee A. Groat, and R. James Evans
Item #AM-22-17818
CIF and Online Material
AM-22-17818.zip zipped


54    Incorporation of incompatible trace elements into molybdenite: Layered PbS precipitates within molybdenite
Yiping Yang, Hongping He, Wei Tan, Qi Tao, Junming Yao, Haiyang Xian, Shangying Li, Jiaxin Xi, Jianxi Zhu, and Huifang Xu
Item #AM-22-17609
Online Material
AM-22-17609.zip zipped


74    Thermoelastic properties of zircon: Implications for geothermobarometry
Alix M. Ehlers, Gabriele Zaffiro, Ross J. Angel, Tiziana Boffa-Ballaran, Michael A. Carpenter, Matteo Alvaro, and Nancy L. Ross

Item #AM-22-17731
Online Material
AM-22-17731.zip zipped


82    A Rayleigh model of cesium fractionation in granite-pegmatite systems
David London
Item #AM-22-17855
Online Material
AM-22-17855.zip zipped


92    The atomic arrangement and electronic interactions in vonsenite at 295, 100, and 90 K
Marc Maderazzo, John M. Hughes, M. Darby Dyar, George R. Rossman, Brandon J. Ackley, Elizabeth C. Sklute, Marian V. Lupulescu, and Jeffrey Chiarenzelli
Item #AM-22-17851
CIF and Online Material
AM-22-17851.zip zipped


100    Oxalate formation by Aspergillus niger on minerals of manganese ores
Olga Frank-Kamenetskaya, Marina Zelenskaya, Alina Izatulina, Vladislav Gurzhiy, Aleksei Rusakov, and Dmitry Vlasov
Item #AM-22-17651
CIF and Online Material
AM-22-17651.zip zipped


116    Mesoproterozoic seafloor authigenic glauconite-berthierine: Indicator of enhanced reverse weathering on early Earth
Jianbai Ma, Xiaoying Shi, Maxwell Lechte, Xiqiang Zhou, Zhenfei Wang, Kangjun Huang, Maxim Rudmin, and Dongjie Tang
Item #AM-22-17904
Online Material
AM-22-17904.zip zipped


131    Chemical variability in vyacheslavite, U(PO4)(OH): Crystal-chemical implications for hydrous and hydroxylated U4+, Ca, and REE phosphates
Gwladys Steciuk, Radek Škoda, Veronika Dillingerová, and Jakub Plášil
Item #AM-22-17875
CIF and Online Material
AM-22-17875.zip zipped


138    Bennesherite, Ba2Fe2+Si2O7: A new melilite group mineral from the Hatrurim Basin, Negev Desert, Israel
Arkadiusz Krzątała, Biljana Krüger, Irina Galuskina, Yevgeny Vapnik, and Evgeny Galuskin
Item #AM-22-17747
CIF and Online Material
AM-22-17747.zip zipped


147    Single-crystal elasticity of phase Egg AlSiO3OH and δ-AlOOH by Brillouin spectroscopy
Baoyun Wang, Yanyao Zhang, Suyu Fu, Wei Yan, Eiichi Takahashi, Li Li, Jung-Fu Lin, and Maoshuang Song

Item #AM-22-18056
CIF and Online Material
AM-22-18056.zip zipped

Lithium, Beryllium and Boron: Quintessentially Crustal

985

Boron coordination in omphacite and glaucophane derived from inter-mineral B isotope fractionation in natural rocks
Jie Dodo Xu, Horst R. Marschall, Axel Gerdes, Anette Meixner, Simone A. Kasemann, and Alan B. Woodland

Abstract     Members Full Text Download           Deposit Item

Mineral Informatics: Revolutionizing Mineralogy, Petrology, and Geochemistry

996

A machine-learning-based approach using clinopyroxene data to improve accuracy and efficiency in predicting tectonic settings: Implications for Rodinia supercontinent breakup triggered by mantle plume events
Hengxu Li, Zhaochong Zhang, Ruixuan Zhang, Marc K. Reichow, Zhiguo Cheng, Zhenjie Zhang, and M. Santosh

Abstract     Members Full Text Download           Deposit Item

Regular Article

1012

Correlations between the structural and impurity features reveal fluctuant growth conditions of natural fibrous diamonds
Chengyang Sun, Mingyue He, Taijin Lu, Shinji Muraishi, and Yi Deng

Open Access     Deposit Item

1024

Effect of layer charge density and charge location on the swelling of smectite: Implications for geological storage of CO2 and high-level nuclear waste
Paolo Andre D. Benavides and Stephen Guggenheim

Abstract     Members Full Text Download      

1034

Kyanite-muscovite-dumortierite vein mineralization mechanisms from advanced microstructural analysis using EBSD
Sneha Dandekar, Elisabetta Mariani, Tushar R. Dandekar, Rajesh K. Khatirkar, Kavita Pande, Joseph Gardner, Heath Bagshaw, Kirtikumar Randive, and Dilip Peshwe

Abstract     Members Full Text Download           Deposit Item

1046

Equilibrium oxygen isotope fractionation in Mg(OH)2-Ca(OH)2-H2O: Insights from in situ high-temperature and high-pressure vibrational spectroscopy
Xi Zhu, Yu Ye, Yancheng Hu, Sha Wang, Yunfan Miao, Dan Liu, Qingbo Wang, Zhen Wu, and Yanming Pan

Abstract     Members Full Text Download           Deposit Item

1060

Analcime-wairakite formation during experimental cement-bentonite alteration at 200‐300 °C
Amber Zandanel, Kirsten B. Sauer, Marlena J. Rock, Florie A. Caporuscio, Carlos F. Jové-Colón, and Edward N. Matteo

Open Access     Deposit Item

1072

Structural mechanisms of pressure-induced isosymmetric second-order phase transitions
Qifa Zhong, Jingui Xu, Dongzhou Zhang, Shanrong Zhang, Mengzeng Wu, Hailing Gu, Yi Zhou, and Dawei Fan

Abstract     Members Full Text Download           Deposit Item

1082

A first-principles investigation on the enthalpy landscape for the hibonite solid solution: Implications for a nebular barometer
Pierre-Marie Zanetta, Abhishek Kumar Thakur, Venkateswara Manga, Krishna Muralidharan, and Thomas J. Zega

Abstract     Members Full Text Download           Deposit Item

1094

Oboniobite (Mg4Nb2O9), a new magnesic-niobic oxide mineral from the Bayan Obo deposit, China
Hai-Dong She, Hong-Rui Fan, Xiang-Ping Gu, Xiao-Chun Li, Kui-Feng Yang, Qi-Wei Wang, Hai-Long Jin, Biao Chen, and Yong-Xin Pan

Abstract     Members Full Text Download           Deposit Item

1105

Hoperanchite, (NH4)2(S2O3), a new mineral from an active vent in a burning bituminous shale
Anthony R. Kampf, Paul M. Adams, Chi Ma, and David K. Lynch

Abstract     Members Full Text Download           Deposit Item

1112

Deciphering the origin of low-grade W mineralization and hydrothermal fluids in the oxidized Fujiashan W skarn deposit using garnet geochemistry
Yunhao Ji, Gui Qing Xie, Simon M. Jowitt, Denis Fougerouse, Wei Li, and Bin Fu

Abstract     Members Full Text Download           Deposit Item

1127

The valence states of Nb and Ta in magmatic-hydrothermal systems: Insights from combined SXAS and XPS analyses of titanite and ilmenite in two Chinese anorogenic suites
Yu-Xiang Zhu, Yuanming Pan, Lian-Xun Wang, Zhenbing She, Renfei Feng, Ning Chen, Sarah Purdy, and Kenan Cao

Abstract     Members Full Text Download           Deposit Item

1149

Mineralogical characterization of the Seffner fulgurite, Florida: Insights into lightning-induced petrogenesis
Marta Morana, Matthew A. Pasek, Tiziano Catelani, and Luca Bindi

Abstract     Members Full Text Download           Deposit Item

ERRATUM

1158

Corrigendum: The olivine-spinel-ameltSiO2 (OSaS) oxybarometer: A new method for evaluating magmatic oxygen fugacity in olivine-phyric basalts
Aaron S. Bell, Laura E. Waters, and Mark Ghiorso

Full Text     

1159

Erratum
Eli Bird, Olivia S. Pardo, Nina Gilkyson, and Jennifer M. Jackson

Full Text     

DEPOSIT ITEMS

985

Boron coordination in omphacite and glaucophane derived from inter-mineral B isotope fractionation in natural rocks
Jie Dodo Xu, Horst R. Marschall, Axel Gerdes, Anette Meixner, Simone A. Kasemann, and Alan B. Woodland

Item#: AM-25-79482
Online Material
AM-25-79482.zip zipped

996

A machine-learning-based approach using clinopyroxene data to improve accuracy and efficiency in predicting tectonic settings: Implications for Rodinia supercontinent breakup triggered by mantle plume events
Hengxu Li, Zhaochong Zhang, Ruixuan Zhang, Marc K. Reichow, Zhiguo Cheng, Zhenjie Zhang, and M. Santosh

Item#: AM-25-79535
Online Material
AM-25-79535.zip zipped

1012

Correlations between the structural and impurity features reveal fluctuant growth conditions of natural fibrous diamonds
Chengyang Sun, Mingyue He, Taijin Lu, Shinji Muraishi, and Yi Deng

Item#: AM-25-79503
Online Material
AM-25-79503.zip zipped

1034

Kyanite-muscovite-dumortierite vein mineralization mechanisms from advanced microstructural analysis using EBSD
Sneha Dandekar, Elisabetta Mariani, Tushar R. Dandekar, Rajesh K. Khatirkar, Kavita Pande, Joseph Gardner, Heath Bagshaw, Kirtikumar Randive, and Dilip Peshwe

Item#: AM-25-79380
Online Material
AM-25-79380.zip zipped

1046

Equilibrium oxygen isotope fractionation in Mg(OH)2-Ca(OH)2-H2O: Insights from in situ high-temperature and high-pressure vibrational spectroscopy
Xi Zhu, Yu Ye, Yancheng Hu, Sha Wang, Yunfan Miao, Dan Liu, Qingbo Wang, Zhen Wu, and Yanming Pan

Item#: AM-25-79474
Online Material
AM-25-79474.zip zipped

1060

Analcime-wairakite formation during experimental cement-bentonite alteration at 200‐300 °C
Amber Zandanel, Kirsten B. Sauer, Marlena J. Rock, Florie A. Caporuscio, Carlos F. Jové-Colón, and Edward N. Matteo

Item#: AM-25-79490
Online Material
AM-25-79490.zip zipped

1072

Structural mechanisms of pressure-induced isosymmetric second-order phase transitions
Qifa Zhong, Jingui Xu, Dongzhou Zhang, Shanrong Zhang, Mengzeng Wu, Hailing Gu, Yi Zhou, and Dawei Fan

Item#: AM-25-79497
CIF and Online Material
AM-25-79497.zip zipped

1082

A first-principles investigation on the enthalpy landscape for the hibonite solid solution: Implications for a nebular barometer
Pierre-Marie Zanetta, Abhishek Kumar Thakur, Venkateswara Manga, Krishna Muralidharan, and Thomas J. Zega

Item#: AM-25-79449
Online Material
AM-25-79449.zip zipped

1094

Oboniobite (Mg4Nb2O9), a new magnesic-niobic oxide mineral from the Bayan Obo deposit, China
Hai-Dong She, Hong-Rui Fan, Xiang-Ping Gu, Xiao-Chun Li, Kui-Feng Yang, Qi-Wei Wang, Hai-Long Jin, Biao Chen, and Yong-Xin Pan

Item#: AM-25-79469
CIF
AM-25-79469.zip zipped

1105

Hoperanchite, (NH4)2(S2O3), a new mineral from an active vent in a burning bituminous shale
Anthony R. Kampf, Paul M. Adams, Chi Ma, and David K. Lynch

Item#: AM-25-79625
CIF and Online Material
AM-25-79625.zip zipped

1112

Deciphering the origin of low-grade W mineralization and hydrothermal fluids in the oxidized Fujiashan W skarn deposit using garnet geochemistry
Yunhao Ji, Gui Qing Xie, Simon M. Jowitt, Denis Fougerouse, Wei Li, and Bin Fu

Item#: AM-25-79452
Online Material
AM-25-79452.zip zipped

1127

The valence states of Nb and Ta in magmatic-hydrothermal systems: Insights from combined SXAS and XPS analyses of titanite and ilmenite in two Chinese anorogenic suites
Yu-Xiang Zhu, Yuanming Pan, Lian-Xun Wang, Zhenbing She, Renfei Feng, Ning Chen, Sarah Purdy, and Kenan Cao

Item#: AM-25-79610
Online Material
AM-25-79610.zip zipped

1149

Mineralogical characterization of the Seffner fulgurite, Florida: Insights into lightning-induced petrogenesis
Marta Morana, Matthew A. Pasek, Tiziano Catelani, and Luca Bindi

Item#: AM-25-79558
AM-25-79558.zip zipped
TABLE OF CONTENTS
&
SPECIAL COLLECTIONS

Table of Contents

AmMin submission to acceptance/”first publication” is at a record average of about three to four months. Our acceptance to “final” publication is presently another 13 months on average.

Special Collections

American Mineralogist is an international journal that publishes mineralogical papers of broad interest to the geoscience and materials science community.