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Volume 91, Number 5-6
May-June
American Mineralogist Cover Image for Volume 91, Issue 5-6
ISSN: 0003-004X
EISSN: 1945-3027
In this Issue
Hourglass sector zoning in metamorphic tourmaline and resultant major and trace-element fractionation
Vincent J. van Hinsberg; John C. Schumacher; Stuart Kearns; Paul R.D. Mason; Gerhard Franz
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Occurrence and late re-equilibration of pollucite from the Koktokay no. 3 pegmatite, Altai, northwestern China
Ru Cheng Wang; Huan Hu; Ai Cheng Zhang; François Fontan; Hui Zhang; Philippe de Parseval
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Chemical bonding and electronic structures of the Al2SiO5 polymorphs, andalusite, sillimanite, and kyanite: X-ray photoelectron- and electron energy loss spectroscopy studies
Fumio S. Ohuchi; Subrata Ghose; Mark H. Engelhard; Donald R. Baer
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Application of the simple salt lattice energy approximation to the solubility of minerals
Claude H. Yoder; Jeffrey P. Rowand
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Quench rate and temperature effects on framework ordering in aluminosilicate melts
Emily V. Dubinsky; Jonathan F. Stebbins
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The effect of sodium on the solubilities of metals in silicate melts
Alexander Borisov; Yann Lahaye; Herbert Palme
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Nanotunnels and pull-aparts: Defects of exsolution lamellae in alkali feldspars
John D. Fitz Gerald; Ian Parsons; Nicola Cayzer
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The structure and distribution of carbon in 3.5 Ga Apex chert: Implications for the biogenicity of Earth’s oldest putative microfossils
Bradley T. De Gregorio; Thomas G. Sharp
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Site disorder revealed through Raman spectra from oriented single crystals: A case study on karooite (MgTi2O5)
Hanns-Peter Liermann; Robert T. Downs; Hexiong Yang
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Single-crystal diffraction and transmission electron microscopy studies of “silicified” pyrochlore from Narssârssuk, Julianehaab district, Greenland
Paola Bonazzi; Luca Bindi; Matteo Zoppi; Gian Carlo Capitani; Filippo Olmi
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Compressibility of synthetic potassium-rich clinopyroxene: In-situ high-pressure single-crystal X-ray study
Luca Bindi; Robert T. Downs; George E. Harlow; Oleg G. Safonov; Yuriy A. Litvin; Leonid L. Perchuk; Hinako Uchida; Silvio Menchetti
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The effect of Ca substitution on the elastic and structural behavior of orthoenstatite
Fabrizio Nestola; G. Diego Gatta; Tiziana Boffa Ballaran
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Dehydroxylation, proton migration, and structural changes in heated talc: An infrared spectroscopic study
Ming Zhang; Qun Hui; Xiao-Jie Lou; Simon A.T. Redfern; Ekhard K.H. Salje; Serena C. Tarantino
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Stabilizing of methane hydrate and transition to a new high-pressure structure at 40 GPa
Hisako Hirai; Shin-ichi Machida; Taro Kawamura; Yoshitaka Yamamoto; Takehiko Yagi
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Upper limit of the tetrahedral rotation angle and factors affecting octahedral flattening in synthetic and natural 1M polytype C2/m space group micas
Patrick H.J. Mercier; Denis G. Rancourt; Guenther J. Redhammer; André E. Lalonde; Jean-Louis Robert; Rob G. Berman; Hideomi Kodama
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Cation order and hydrogen bonding of high-pressure phases in the Al2O3-SiO2-H2O system: An NMR and Raman study
Xianyu Xue; Masami Kanzaki; Hiroshi Fukui; Eiji Ito; Takafumi Hashimoto
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Relationship among metamorphic grade, vesuvianite “rod polytypism,” and vesuvianite composition
Edwin Gnos; Thomas Armbruster
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Assignment of infrared OH-stretching bands in calcic amphiboles through deuteration and heat treatment
Kiyotaka Ishida; Frank C. Hawthorne
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Direct determination of cation site occupancies in natural ferrite spinels by L2,3 X-ray absorption spectroscopy and X-ray magnetic circular dichroism
Carolyn I. Pearce; C. Michael B. Henderson; Richard A.D. Pattrick; Gerrit van der Laan; David J. Vaughan
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Heat capacities and entropies of mixing of pyrope-grossular (Mg3Al2Si3O12-Ca3Al2Si3O12) garnet solid solutions: A low-temperature calorimetric and a thermodynamic investigation
Edgar Dachs; Charles A. Geiger
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Fe2+ and Fe3+ quantification by different approaches and fO2 estimation for Albanian Cr-spinels
Marco Quintiliani; Giovanni B. Andreozzi; Giorgio Graziani
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Inversion twinning in troilite
Roman Skála; Ivana Císařová; Milan Drábek
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Chivruaiite, Ca4(Ti,Nb)5[(Si6O17)2[(OH,O)5]·13–14H2O, a new mineral from hydrothermal veins of Khibiny and Lovozero alkaline massifs
Yuri P. Men’shikov; Sergey V. Krivovichev; Yakov A. Pakhomovsky; Victor N. Yakovenchuk; Gregory Yu. Ivanyuk; Julia A. Mikhailova; Thomas Armbruster; Ekaterina A. Selivanova
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Pseudojohannite from Jáchymov, Musonoï, and La Creusaz: A new member of the zippeite-group
Joël Brugger; Kia Sheree Wallwork; Nicolas Meisser; Allan Pring; Petr Ondruš; Jiří Čejka
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Scheuchzerite, Na(Mn,Mg)9[VSi9O28(OH)](OH)3, a new single-chain silicate
Joël Brugger; Sergey Krivovichev; Nicolas Meisser; Stefan Ansermet; Thomas Armbruster
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Mn-tourmaline crystals from island of Elba (Italy): Growth history and growth marks
Giovanna Agrosì; Ferdinando Bosi; Sergio Lucchesi; Giovanni Melchiorre; Eugenio Scandale
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The oxidation state of vanadium in titanomagnetite from layered basic intrusions
Etienne Balan; Johan P.R. De Villiers; Sigrid Griet Eeckhout; Pieter Glatzel; Michael J. Toplis; Emmanuel Fritsch; Thierry Allard; Laurence Galoisy; Georges Calas
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Observation of bicarbonate in calcite by NMR spectroscopy
Jian Feng; Young J. Lee; Richard J. Reeder; Brian L. Phillips
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Single-crystal elastic properties of dense hydrous magnesium silicate phase A
Carmen Sanchez-Valle; Stanislav V. Sinogeikin; Joseph R. Smyth; Jay D. Bass
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Presentation of Awards for 2005

Presentation of the Roebling Medal for 2005 of the Mineralogical Society of America to Ho-kwang Mao
Charles T. Prewitt
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Acceptance of the Mineralogical Society of America Roebling Medal for 2005
Ho-kwang “David” Mao
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Presentation of the Mineralogical Society of America Award for 2005 to Tiziana Boffa-Ballaran
Ross J. Angel
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Acceptance of the Mineralogical Society of America Award for 2005
Tiziana Boffa Ballaran
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Presentation of the Distinguished Public Service Medal of the Mineralogical Society of America for 2005 to Robin Brett
Peter J. Wyllie
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Acceptance of the Distinguished Public Service Medal for 2005
Robin Brett
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Presentation of the Mineralogical Society of America Dana Medal for 2005 to William D. Carlson
W.G. Ernst
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Acceptance of the Dana Medal of the Mineralogical Society of America for 2005
William D. Carlson
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All Issues
  • Online ISSN 1945-3027
  • ISSN 0003-004X
  • Copyright © 2025 Mineralogical Society of America
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