554

Characterization of ferric arsenate-sulfate compounds: Implications for arsenic control in refractory gold processing residues
Dogan Paktunc, Juraj Majzlan, Lukáš Palatinus, John Dutrizac, Mariana Klementová, and Glenn Poirier

566

Crystal structure and chemistry of skarn-associated bismuthian vesuvianite
Ulf Hålenius, Ferdinando Bosi, and Kjell Gatedal

588

Synthesis and characterization of amphiboles along the tremolite–glaucophane join
David M. Jenkins, Giancarlo Della Ventura, Roberta Oberti, and Krassimir Bozhilov

629

Hydrogen incorporation and the oxidation state of iron in ringwoodite: A spectroscopic study
Maria Mrosko, Stephan Lenz, Catherine A. McCammon, Michail Taran, Richard Wirth, and Monika Koch-Müller

651

Computational study of the elastic behavior of the 2M₁ muscovite-paragonite series
Noemí Hernández-Haro, Joaquín Ortega-Castro, Carlos Pérez Del Valle, Daniel Muñoz-Santiburcio, Claro Ignacio Sainz-Díaz, and Alfonso Hernández-Laguna

665

Vanadium L_2,3 XANES experiments and first-principles multielectron calculations: Impact of second-nearest neighboring cations on vanadium-bearing fresnoites
Thomas Höche, Hidekazu Ikeno, Marisa Mäder, Grant S. Henderson, Robert I.R. Blyth, Brian C. Sales, and Isao Tanaka

718

Revision of the crystal structure and chemical formula of haiweeite, Ca(UO₂)₂(Si₅O₁₂)(OH)₂·6H₂O
Jakub Plášil, Karla Fejfarová, Jiří Čejka, Michal Dušek, Radek Škoda, and Jiří Sejkora

724

Cation arrangement in the octahedral and tetrahedral sheets of cis-vacant polymorph of dioctahedral 2:1 phyllosilicates by quantum mechanical calculations
Elisabeth Escamilla-Roa, Alfonso Hernández-Laguna, and C. Ignacio Sainz-Díaz

736

High-pressure phase transitions of Fe_3–xTi_xO₄ solid solution up to 60 GPa correlated with electronic spin transition
Takamitsu Yamanaka, Atsushi Kyono,Yuki Nakamoto, Yue Meng, Svetlana Kharlamova, Victor V. Struzhkin, and Ho-kwang Mao

752

The vibrational features of hydroxylapatite and type A carbonated apatite: A first principle contribution
Gianfranco Ulian, Giovanni Valdrè, Marta Corno, and Piero Ugliengo

760

STEM investigation of exsolution lamellae and “c” reflections in Ca-rich dolomite from the Platteville Formation, western Wisconsin
Zhizhang Shen, Hiromi Konishi, Philip E. Brown, and Huifang Xu

767

Karenwebberite, Na(Fe²⁺,Mn²⁺)PO₄, a new member of the triphylite group from the Malpensata pegmatite, Lecco Province, Italy
Pietro Vignola, Frédéric Hatert, André-Mathieu Fransolet, Olaf Medenbach, Valeria Diella, and Sergio Andò

780

Static disorders of atoms and experimental determination of Debye temperature in pyrope: Low- and high-temperature single-crystal X-ray diffraction study—Discussion
Charles A. Geiger

783

Static disorders of atoms and experimental determination of Debye temperature in pyrope: Low- and high-temperature single-crystal X‑ray diffraction study—Reply
Akihiko Nakatsuka, Mami Shimokawa, Noriaki Nakayama, Osamu Ohtaka, Hiroshi Arima, Maki Okube, and Akira Yoshiasa

785

Nomenclature of the garnet supergroup
Edward S. Grew (Chair), Andrew J. Locock, Stuart J. Mills (Vice-Chair), Irina O. Galuskina, Evgeny V. Galuskin, and Ulf Hålenius

816

ERRATUM: The IR vibrational properties of six members of the garnet family: A quantum mechanical ab initio study by R. Dovesi, M. De La Pierre, A.M. Ferrari, F. Pascale, L. Maschio, C.M. Zicovich-Wilson (November-December, vol. 96, p. 1787–1798, 2011)

816

ERRATUM: Phosphovanadylite-Ca, Ca[V⁴⁺₄P₂O₈(OH)₈]·12H₂O, the Ca analogue of phosphovanadylite-Ba by Anthony R. Kampf, Barbara P. Nash, and Thomas A. Loomis (February-March, vol. 98, p. 439–44)

530

Remobilization of U and REE and the formation of secondary minerals in oxidized U deposits
Susanne Göb, Jan-Erik Gühring, Michael Bau, and Gregor Markl

549

Revision of the symmetry and the crystal structure of čejkaite, Na₄(UO₂)(CO₃)₃
Jakub Plášil, Karla Fejfarová, Michal Dušek, Radek Škoda, and Jan Rohlíček

529

A fresh look at crystals in the Bishop Tuff
Michel Pichavant

574

Transformation of graphite to lonsdaleite and diamond in the Goalpara ureilite directly observed by TEM
Yoshihiro Nakamuta and Shoichi Toh

582

Quartz nanocrystals in the 2.48 Ga Dales Gorge banded iron formation of Hamersley, Western Australia: Evidence for a change from submarine to subaerial volcanism at the end of the Archean
Yi-Liang Li, David R. Cole, Kurt Konhauser, and Lung Sang Chan

601

Elasticity of franklinite and trends for transition-metal oxide spinels
Hans J. Reichmann, Steven D. Jacobsen, and Tiziana Boffa Ballaran

609

Noise of collapsing minerals: Predictability of the compressional failure in goethite mines
Ekhard K.H. Salje, Giulio I. Lampronti, Daniel E. Soto-Parra, Jordi Bar??, Antoni Planes, and Eduard Vives

616

Redox systematics of martian magmas with implications for magnetite stability
Kevin Righter, Lisa R. Danielson, Kellye Pando, Richard V. Morris, Trevor G. Graff, David G. Agresti, Audrey M. Martin, Stephen R. Sutton, Matt Newville, and Antonio Lanzirotti

637

Hydrous ringwoodite to 5 K and 35 GPa: Multiple hydrogen bonding sites resolved with FTIR spectroscopy
Wendy R. Panero, Joseph R. Smyth, Jeffrey S. Pigott, Zhenxian Liu, and Daniel J. Frost

643

Calibration of zircon as a Raman spectroscopic pressure sensor to high temperatures and application to water-silicate melt systems
Christian Schmidt, Matthew Steele-MacInnis, Anke Watenphul, and Max Wilke

671

A time-resolved X-ray diffraction study of Cs exchange into hexagonal H-birnessite
Claire R. Fleeger, Peter J. Heaney, and Jeffrey E. Post

680

Grain-boundary diffusion rates inferred from grain-size variations of quartz in metacherts from a contact aureole
Takamoto Okudaira, Hikaru Bando, and Kenta Yoshida

689

On the use of unpolarized infrared spectroscopy for quantitative analysis of absorbing species in birefringent crystals
Anthony C. Withers

698

A computational model of cation ordering in the magnesioferrite-qandilite (MgFe₂O₄-Mg₂TiO₄) solid solution and its potential application to titanomagnetite (Fe₃O₄-Fe₂TiO₄)
Richard J. Harrison, Erika J. Palin, and Natasha Perks

709

3T-phlogopite from Kasenyi kamafugite (SW Uganda): EPMA, XPS, FTIR, and SCXRD study
Emanuela Schingaro, Maria Lacalamita, Fernando Scordari, and Ernesto Mesto

745

Hydrogen incorporation in crystalline zircon: Insight from ab initio calculations
Sanda M. Botis, Yuanming Pan, and Rodney C. Ewing

773

The crystal structure of ramdohrite, Pb_5.9Fe_0.1Mn_0.1In_0.1Cd_0.2Ag_2.8Sb_10.8S₂₄: A new refinement
Emil Makovicky, William G. Mumme, and Robert W. Gable

811

NEW MINERAL NAMES
Dmitriy Belakovskiy Dorian G.W. Smith and Mark Welch