
American Mineralogist

Letter
MSA Presidential Address
Mickey E. Gunter
789 Eu speciation in apatite at 1 bar: An experimental study of valence-state partitioning by XANES, lattice strain, and Eu/Eu* in basaltic systems
Nicholas D. Tailby, Dustin Trail, E. Bruce Watson, Antonio Lanzirotti, Matthew Newville, and Yanling Wang
814 The effect of composition on chlorine solubility and behavior in silicate melts
Richard W. Thomas and Bernard J. Wood
826 High-temperature phase relations of hydrous aluminosilicates at 22 GPa in the AlOOH-AlSiO3OH system
Goru Takaichi, Masayuki Nishi, Youmo Zhou, Shinichi Machida, Ginga Kitahara, Akira Yoshiasa, and Tetsuo Irifune
REGULAR ARTICLES
832 Crystallization of spinel from coexisting silicate and sulfide immiscible liquids: An equilibrium case with postcumulus reactions
Ya-Jing Mao, Stephen J. Barnes, Louise Schoneveld, Belinda Godel, Morgan Williams, Dongmei Tang, Zhen Kang, and Ke-Zhang Qin
847 X-ray absorption spectroscopy study of Mn reference compounds for Mn speciation in terrestrial surface environments
Teresa Zahoransky, Anna V. Wegorzewski, Winnie Huong, and Christian Mikutta
865 Heterogeneous and retarded phase transformation of ferrihydrite on montmorillonite surface: The important role of surface interactions
Hongyan Wei, Jing Liu, Qingze Chen, Runliang Zhu, Lixia Yan, Yixuan Yang, Xiaoliang Liang, Jianxi Zhu, and Hongping He
881 Atomic-scale characterization of the oxidation state of Ti in meteoritic hibonite: Implications for early solar system thermodynamics
Pierre-Marie Zanetta, Venkateswara Rao Manga, Yao-Jen Chang, Tarunika Ramprasad, Juliane Weber, John R. Beckett, and Thomas J. Zega
903 Structural behavior of C2/m tremolite to 40 GPa: A highpressure single-crystal X-ray diffraction study
Jason N. Ott, Bora Kalkan, Martin Kunz, Genesis Berlanga, Ali F. Yuvali, and Quentin Williams
915 Optimizing Raman spectral collection for quartz and zircon crystals for elastic thermobarometry
Mayara F. Cizina, T. Dylan Mikesell, and Matthew J. Kohn
928 Measuring H2O concentrations in olivine by secondary ion mass spectrometry: Challenges and paths forward
W. Henry Towbin, Terry Plank, Emily Klein, and Erik Hauri
941 Arsenic clustering in arsenian pyrite: A combined photoemission and theoretical modeling study
Reza Mahjoub, Marta Krasowska, Nikki Stanford, William Skinner, and Philip Forson
950 High-pressure electrical conductivity and elasticity of ironbearing δ-AlOOH
Xiaowan Su, Jin Liu, Yukai Zhuang, Chaojia Lv, Xuyong Pang, Fuyang Liu, Xiaohui Yu, and Qiang Sun
959 Nudged elastic band calculations of the (4H)X Si hydrogarnet type defect in Mg2SiO4 forsterite
Brent T. Poe and Maria Grazia Perna
968 Mn substitution and distribution in goethite and influences on its photocatalytic properties: A combined study using first-principles calculations and photocatalytic experiments
Xin Liu, Huan Liu, Meirong Zong, Meng Chen, Hongping He, Rucheng Wang, and Xiancai Lu
978 Incorporating previously neglected excess oxygen associated with ferric iron in matrix corrections of microprobe data from cubic and rhombohedral Fe-Ti oxides
Michael A. Dungan, John J. Donovan, Andrew J. Locock, and Emma S. Bullock
987 Recycled carbonates in the mantle sources of natural kamafugites: A zinc isotope perspective
Lei Ma, Sheng-Ao Liu, Zhidan Zhao, and Xue-Hui Yu
999 Raman analysis of octocoral carbonate ion structural disorder along a natural depth gradient, Kona coast, Hawai‘i
Kyle Conner, Shiv Sharma, Ryohei Uchiyama, Kentaro Tanaka, Naoko Murakami-Sugihara, Kotaro Shirai, and Samuel Kahng
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
Corinne Kuebler, Antonio Simonetti, Stefanie S. Simonetti, and Robert F. Martin
Item #AM-22-17811
Online Material
AM-22-17811.zip zipped
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
Yiping Yang, Hongping He, Wei Tan, Qi Tao, Junming Yao, Haiyang Xian, Shangying Li, Jiaxin Xi, Jianxi Zhu, and Huifang Xu
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
David London
Marc Maderazzo, John M. Hughes, M. Darby Dyar, George R. Rossman, Brandon J. Ackley, Elizabeth C. Sklute, Marian V. Lupulescu, and Jeffrey Chiarenzelli
Olga Frank-Kamenetskaya, Marina Zelenskaya, Alina Izatulina, Vladislav Gurzhiy, Aleksei Rusakov, and Dmitry Vlasov
Jianbai Ma, Xiaoying Shi, Maxwell Lechte, Xiqiang Zhou, Zhenfei Wang, Kangjun Huang, Maxim Rudmin, and Dongjie Tang
Gwladys Steciuk, Radek Škoda, Veronika Dillingerová, and Jakub Plášil
Arkadiusz Krzątała, Biljana Krüger, Irina Galuskina, Yevgeny Vapnik, and Evgeny Galuskin
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
SPECIAL COLLECTION: EXPERIMENTAL AND PETROLOGIC INVESTIGATION OF HALOGENS, SULFUR, AND OTHER VOLATILE SPECIES IN IGNEOUS SYSTEMS IN HONOR OF JIM WEBSTER
789
Eu speciation in apatite at 1 bar: An experimental study of valence-state partitioning by XANES, lattice strain, and Eu/Eu* in basaltic systems
Nicholas D. Tailby, Dustin Trail, E. Bruce Watson, Antonio Lanzirotti, Matthew Newville, and Yanling Wang
814
The effect of composition on chlorine solubility and behavior in silicate melts
Richard W. Thomas and Bernard J. Wood
SPECIAL COLLECTION: PHYSICS AND CHEMISTRY OF EARTH'S DEEP MANTLE AND CORE
826
High-temperature phase relations of hydrous aluminosilicates at 22 GPa in the AlOOH-AlSiO3OH system
Goru Takaichi, Masayuki Nishi, Youmo Zhou, Shinichi Machida, Ginga Kitahara, Akira Yoshiasa, and Tetsuo Irifune
REGULAR ARTICLE
832
Crystallization of spinel from coexisting silicate and sulfide immiscible liquids: An equilibrium case with postcumulus reactions
Ya-Jing Mao, Stephen J. Barnes, Louise Schoneveld, Belinda Godel, Morgan Williams, Dongmei Tang, Zhen Kang, and Ke-Zhang Qin
847
X-ray absorption spectroscopy study of Mn reference compounds for Mn speciation in terrestrial surface environments
Teresa Zahoransky, Anna V. Wegorzewski, Winnie Huong, and Christian Mikutta
865
Heterogeneous and retarded phase transformation of ferrihydrite on montmorillonite surface: The important role of surface interactions
Hongyan Wei, Jing Liu, Qingze Chen, Runliang Zhu, Lixia Yan, Yixuan Yang, Xiaoliang Liang, Jianxi Zhu, and Hongping He
881
Atomic-scale characterization of the oxidation state of Ti in meteoritic hibonite: Implications for early solar system thermodynamics
Pierre-Marie Zanetta, Venkateswara Rao Manga, Yao-Jen Chang, Tarunika Ramprasad, Juliane Weber, John R. Beckett, and Thomas J. Zega
903
Structural behavior of C2/m tremolite to 40 GPa: A highpressure single-crystal X-ray diffraction study
Jason N. Ott, Bora Kalkan, Martin Kunz, Genesis Berlanga, Ali F. Yuvali, and Quentin Williams
915
Optimizing Raman spectral collection for quartz and zircon crystals for elastic thermobarometry
Mayara F. Cizina, T. Dylan Mikesell, and Matthew J. Kohn
928
Measuring H2O concentrations in olivine by secondary ion mass spectrometry: Challenges and paths forward
W. Henry Towbin, Terry Plank, Emily Klein, and Erik Hauri
941
Arsenic clustering in arsenian pyrite: A combined photoemission and theoretical modeling study
Reza Mahjoub, Marta Krasowska, Nikki Stanford, William Skinner, and Philip Forson
950
High-pressure electrical conductivity and elasticity of ironbearing δ-AlOOH
Xiaowan Su, Jin Liu, Yukai Zhuang, Chaojia Lv, Xuyong Pang, Fuyang Liu, Xiaohui Yu, and Qiang Sun
959
Nudged elastic band calculations of the (4H)X Si hydrogarnet type defect in Mg2SiO4 forsterite
Brent T. Poe and Maria Grazia Perna
968
Mn substitution and distribution in goethite and influences on its photocatalytic properties: A combined study using first-principles calculations and photocatalytic experiments
Xin Liu, Huan Liu, Meirong Zong, Meng Chen, Hongping He, Rucheng Wang, and Xiancai Lu
978
Incorporating previously neglected excess oxygen associated with ferric iron in matrix corrections of microprobe data from cubic and rhombohedral Fe-Ti oxides
Michael A. Dungan, John J. Donovan, Andrew J. Locock, and Emma S. Bullock
987
Recycled carbonates in the mantle sources of natural kamafugites: A zinc isotope perspective
Lei Ma, Sheng-Ao Liu, Zhidan Zhao, and Xue-Hui Yu
999
Raman analysis of octocoral carbonate ion structural disorder along a natural depth gradient, Kona coast, Hawai‘i
Kyle Conner, Shiv Sharma, Ryohei Uchiyama, Kentaro Tanaka, Naoko Murakami-Sugihara, Kotaro Shirai, and Samuel Kahng
MEMORIAL
1014
Memorial of Charles Wilson Burnham, 1933–2021
Mark Van Baalen, Charles H. Langmuir, and Michael B. McElroy
ERRATUM
1016
ERRATUM
Andrew Jackson
DEPOSIT ITEMS
789
Eu speciation in apatite at 1 bar: An experimental study of valence-state partitioning by XANES, lattice strain, and Eu/Eu* in basaltic systems
Nicholas D. Tailby, Dustin Trail, E. Bruce Watson, Antonio Lanzirotti, Matthew Newville, and Yanling Wang
814
The effect of composition on chlorine solubility and behavior in silicate melts
Richard W. Thomas and Bernard J. Wood
826
High-temperature phase relations of hydrous aluminosilicates at 22 GPa in the AlOOH-AlSiO3OH system
Goru Takaichi, Masayuki Nishi, Youmo Zhou, Shinichi Machida, Ginga Kitahara, Akira Yoshiasa, and Tetsuo Irifune
832
Crystallization of spinel from coexisting silicate and sulfide immiscible liquids: An equilibrium case with postcumulus reactions
Ya-Jing Mao, Stephen J. Barnes, Louise Schoneveld, Belinda Godel, Morgan Williams, Dongmei Tang, Zhen Kang, and Ke-Zhang Qin
847
X-ray absorption spectroscopy study of Mn reference compounds for Mn speciation in terrestrial surface environments
Teresa Zahoransky, Anna V. Wegorzewski, Winnie Huong, and Christian Mikutta
865
Heterogeneous and retarded phase transformation of ferrihydrite on montmorillonite surface: The important role of surface interactions
Hongyan Wei, Jing Liu, Qingze Chen, Runliang Zhu, Lixia Yan, Yixuan Yang, Xiaoliang Liang, Jianxi Zhu, and Hongping He
881
Atomic-scale characterization of the oxidation state of Ti in meteoritic hibonite: Implications for early solar system thermodynamics
Pierre-Marie Zanetta, Venkateswara Rao Manga, Yao-Jen Chang, Tarunika Ramprasad, Juliane Weber, John R. Beckett, and Thomas J. Zega
903
Structural behavior of C2/m tremolite to 40 GPa: A highpressure single-crystal X-ray diffraction study
Jason N. Ott, Bora Kalkan, Martin Kunz, Genesis Berlanga, Ali F. Yuvali, and Quentin Williams
915
Optimizing Raman spectral collection for quartz and zircon crystals for elastic thermobarometry
Mayara F. Cizina, T. Dylan Mikesell, and Matthew J. Kohn
928
Measuring H2O concentrations in olivine by secondary ion mass spectrometry: Challenges and paths forward
W. Henry Towbin, Terry Plank, Emily Klein, and Erik Hauri
968
Mn substitution and distribution in goethite and influences on its photocatalytic properties: A combined study using first-principles calculations and photocatalytic experiments
Xin Liu, Huan Liu, Meirong Zong, Meng Chen, Hongping He, Rucheng Wang, and Xiancai Lu
978
Incorporating previously neglected excess oxygen associated with ferric iron in matrix corrections of microprobe data from cubic and rhombohedral Fe-Ti oxides
Michael A. Dungan, John J. Donovan, Andrew J. Locock, and Emma S. Bullock
987
Recycled carbonates in the mantle sources of natural kamafugites: A zinc isotope perspective
Lei Ma, Sheng-Ao Liu, Zhidan Zhao, and Xue-Hui Yu
999
Raman analysis of octocoral carbonate ion structural disorder along a natural depth gradient, Kona coast, Hawai‘i
Kyle Conner, Shiv Sharma, Ryohei Uchiyama, Kentaro Tanaka, Naoko Murakami-Sugihara, Kotaro Shirai, and Samuel Kahng

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