897

Corundum–leucosome-bearing aluminous gneiss from Ayyarmalai, Southern Granulite Terrain, India: A textbook example of vapor phase-absent muscovite-melting in silica-undersaturated aluminous rocks
Michael M. Raith, Pulak Sengupta, Ellen Kooijman, Dewashish Upadhyay, and C. Srikantappa

921

Arsenic speciation in fluid inclusions using micro-beam X-ray absorption spectroscopy
Julianne James-Smith, Jean Cauzid, Denis Testemale, Weihua Liu, Jean-Louis Hazemann, Olivier Proux, Barbara Etschmann, Pascal Philippot, David Banks, Patrick Williams, and Joël Brugger

939

Chabazite-Mg: A new natural zeolite of the chabazite series
G. Montagna, S. Bigi, P. Kónya, S. Szakáll, and G. Vezzalini

953

Pertsevite-(OH), a new mineral in the pertsevite series, Mg₂(BO₃)_1–x(SiO₄)_x(F,OH)_1–x (x < 0.5), from the Snezhnoye deposit in Sakha-Yakutia Republic, Russia
Irina O. Galuskina, Luisa Ottolini, Milen Kadiyski, Thomas Armbruster, Evgeny V. Galuskin, Piotr Dzierżanowski, and Antoni Winiarski

959

Bitikleite-(SnAl) and bitikleite-(ZrFe): New garnets from xenoliths of the Upper Chegem volcanic structure, Kabardino-Balkaria, Northern Caucasus, Russia
Irina O. Galuskina, Evgeny V. Galuskin, Thomas Armbruster, Biljana Lazic, Piotr Dzierżanowski, Viktor M. Gazeev, Krystian Prusik, Nikolai N. Pertsev, Antoni Winiarski, Aleksandr E. Zadov, Roman Wrzalik, and Anatoly G. Gurbanov

1052

Integral molar absorptivities of OH in muscovite at 20 to 650 °C by in-situ high-temperature IR microspectroscopy
Kazuyo Tokiwai and Satoru Nakashima

1095

Arsenic enrichment in hydrous peraluminous melts: Insights from femtosecond laser ablationinductively coupled plasma-quadrupole mass spectrometry, and in situ X-ray absorption fine structure spectroscopy
Anastassia Y. Borisova, Gleb S. Pokrovski, Michel Pichavant, Rémi Freydier, and Frédéric Candaudap

1105

Partial high-grade alteration of monazite using alkali-bearing fluids: Experiment and nature
Daniel E. Harlov and Callum J. Hetherington

1109

A first-principles determination of the orientation of H₃O⁺ in hydronium alunite
Julian D. Gale, Kate Wright, and Karen A. Hudson-Edwards

1113

The structure of a super-aluminous version of the dense hydrous-magnesium silicate phase D
Tiziana Boffa Ballaran, Daniel J. Frost, Nobuyoshi Miyajima, and Florian Heidelbach

1117

Kaolin polytypes revisited ab initio at 10 GPa
Patrick H.J. Mercier, Yvon Le Page, and Serge Desgreniers

908

Near infrared spectra of white mica in the Belt Supergroup and implications for metamorphism
Edward F. Duke and Reed S. Lewis

933

The crystal chemistry and crystal structure of kuksite, Pb₃Zn₃Te⁶⁺P₂O₁₄, and a note on the crystal structure of yafsoanite, (Ca,Pb)₃Zn(TeO₆)₂
Stuart J. Mills, Anthony R. Kampf, Uwe Kolitsch, Robert M. Housley, and Mati Raudsepp

946

Solution calorimetric investigation of fluor-chlorapatite crystalline solutions
Guy L. Hovis and Daniel E. Harlov

968

Silicon coordination in rutile and TiO₂-II at ambient and high pressures: Si-29 NMR
Jed L. Mosenfelder, Namjun Kim, and Jonathan F. Stebbins

974

Spin orientation in a natural Ti-bearing hematite: Evidence for an out-of-plane component
Richard J. Harrison, Suzanne A. McEnroe, Peter Robinson, and Christopher J. Howard

980

Theoretical determination of the Raman spectra of single-crystal forsterite (Mg₂SiO₄)
David A. McKeown, Michael I. Bell, and Razvan Caracas

987

Nitrogen and hydrogen isotope compositions and solubility in silicate melts in equilibrium with reduced (N+H)-bearing fluids at high pressure and temperature: Effects of melt structure
Bj??rn O. Mysen and Marilyn L. Fogel

1000

In situ ultrasonic velocity measurements across the olivine-spinel transformation in Fe₂SiO₄
Qiong Liu, Wei Liu, Matthew L. Whitaker, Liping Wang, and Baosheng Li

1006

The computation of equilibrium assemblage diagrams with Theriak/Domino software
Christian de Capitani and Konstantin Petrakakis

1017

Determination of nanoparticulate magnetite stoichiometry by M??ssbauer spectroscopy, acidic dissolution, and powder X-ray diffraction: A critical review
Christopher A. Gorski and Michelle M. Scherer

1027

Low-temperature behavior of natural kalsilite with P31c symmetry: An in situ single-crystal X-ray diffraction study
G. Diego Gatta, Ross J. Angel, and Michael A. Carpenter

1035

First-principles simulations of MgO tilt grain boundary: Structure and vacancy formation at high pressure
Ashok K. Verma and Bijaya B. Karki

1042

The effect of oxo-component on the high-pressure behavior of amphiboles
P. Comodi, T. Boffa Ballaran, P.F. Zanazzi, C. Capalbo, A. Zanetti, and S. Nazzareni

1060

Principles of thermal expansion in the feldspar system
Guy L. Hovis, Aaron Medford, Maricate Conlon, Allison Tether, and Anthony Romanoski

1069

A moissanite cell apparatus for optical in situ observation of crystallizing melts at high temperature
Federica Schiavi, Nicolas Walte, Alexander Konschak, and Hans Keppler

1080

Polezhaevaite-(Ce), NaSrCeF₆, a new mineral from the Khibiny massif (Kola Peninsula, Russia)
Victor N. Yakovenchuk, Ekaterina A. Selivanova, Gregory Yu. Ivanyuk, Yakov A. Pakhomovsky, Julia A. Korchak, and Alexander P. Nikolaev

1084

The interlayer structure of trioctahedral lithian micas: An AXANES spectroscopy study at the potassium K-edge
Giannantonio Cibin, Annibale Mottana, Augusto Marcelli, Gianfelice Cinque, Wei Xu, Ziyu Wu, and Maria Franca Brigatti

1121

NEW MINERAL NAMES
Glenn Poirier, Kimberly T. Tait, and Paula C. Piilonen