409

Acid production by FeSO₄·nH₂O dissolution and implications for terrestrial and martian aquatic systems
Joel A. Hurowitz, Nicholas J. Tosca, and M. Darby Dyar

487

Aluminocerite-Ce: A new species from Baveno,Italy: Description and crystal-structure determination
Fabrizio Nestola, Alessandro Guastoni, Fernando Cámara, Luciano Secco, Alberto Dal Negro, Danilo Pedron, and Anton Beran

609

Fettelite, [Ag₆As₂S₇][Ag₁₀HgAs₂S₈] from Chañarcillo, Chile: Crystal structure, pseudosymmetry, twinning, and revised chemical formula
Luca Bindi, Frank N. Keutsch, Carl A. Francis, and Silvio Menchetti

616

High-pressure phase transformation in LiFeGe₂O₆ pyroxene
Fabrizio Nestola, Günther J. Redhammer, Martha G. Pamato, Luciano Secco, and Alberto Dal Negro

622

Determination of the crystal structure of sanderite, MgSO₄·2H₂O, by X-ray powder diffraction and the charge flipping method
Hongwei Ma, David L. Bish, Hsiu-Wen Wang, and Steve J. Chipera

630

Crystal structure and Raman spectrum of a high-pressure Li-rich majoritic garnet, (Li₂Mg)Si₂(SiO₄)₃
Hexiong Yang, Jürgen Konzett, Robert T. Downs, and Daniel J. Frost

634

Quasi-ice-like C_P behavior of molecular H₂O in hemimorphite Zn₄Si₂O₇(OH)₂·H₂O: C_P and entropy of confined H₂O in microporous silicates
Charles A. Geiger and Edgar Dachs

641

Presentation of the Mineralogical Society of America Award for 2008
Ho-kwang “David” Mao

626

Forsterite, wadsleyite, and ringwoodite (Mg₂SiO₄): ²⁹Si NMR constraints on structural disorder and effects of paramagnetic impurity ions
Jonathan F. Stebbins, Wendy R. Panero, Joseph R. Smyth, and Daniel J. Frost

415

Growth controls in colloform pyrite
Craig D. Barrie, Adrian J. Boyce, Alan P. Boyle, Patrick J. Williams, Kevin Blake, Takahiko Ogawara, Junji Akai, and David J. Prior

430

Parageneses and Th-U distributions among allanite, monazite, and xenotime in Barrovian-type metapelites, Imjingang belt, central Korea
Yoonsup Kim, Keewook Yi, and Moonsup Cho

439

Magmatic vs. hydrothermal origins for zircon associated with tantalum mineralization in the Tanco pegmatite, Manitoba, Canada
Marieke Van Lichtervelde, Frank Melcher, and Richard Wirth

451

Molecular conformation and anion configuration variations for As₄S₄ and As₄Se₄ in an anion-substituted solid solution
Atsushi Kyono

461

Low-pressure clino- to high-pressure clinoenstatite phase transition: A phonon-related mechanism
Yonggang G. Yu and Renata M. Wentzcovitch

467

Coordination study of rare earth elements on Fe oxyhydroxide and Mn dioxides: Part I. Influence of a multi-electron excitation on EXAFS analyses of La, Pr, Nd, and Sm
Atsuyuki Ohta, Hiroyuki Kagi, Masaharu Nomura, Hiroshi Tsuno, and Iwao Kawabe

476

Coordination study of rare earth elements on Fe oxyhydroxide and Mn dioxides: Part II. Correspondence of structural change to irregular variations of partitioning coefficients and tetrad effect variations appearing in interatomic distances
Atsuyuki Ohta, Hiroyuki Kagi, Masaharu Nomura, Hiroshi Tsuno, and Iwao Kawabe

494

A thermodynamic model for the plagioclase-liquid hygrometer/thermometer
Rebecca A. Lange, Holli M. Frey, and Jacob Hector

507

Solid-state NMR and IR spectroscopic investigation of the role of structural water and F in carbonate-rich fluorapatite
Harris E. Mason, Francis M. McCubbin, Alexander Smirnov, and Brian L. Phillips

517

Chemical-structural modularity in the tetradymite group: A HRTEM study
Cristiana Liana Ciobanu, Allan Pring, Nigel John Cook, Peter Self, David Jefferson, Gabriel Ionel Dima, and Volodymir Melnikov

535

Stability of pargasite during ultrahigh-temperature metamorphism: A consequence of titanium and REE partitioning?
K. Sajeev, Y. Osanai, Y. Kon, and T. Itaya

547

Raman spectroscopic and microscopic criteria for the distinction of microdiamonds in ultrahigh-pressure metamorphic rocks from diamonds in sample preparation materials
Maria Perraki, Andrey V. Korsakov, David C. Smith, and Evripidis Mposkos

557

Lattice compression and structural behavior of NaVSi₂O₆ clinopyroxene to 11 GPa
Angela Ullrich, Ronald Miletich, Fabrizio Nestola, Christian Weikusat, and Haruo Ohashi

565

A predictive model for the enthalpies of hydration of zeolites
Philippe Vieillard and Romain Mathieu

578

Thermal decomposition of calcite: Mechanisms of formation and textural evolution of CaO nanocrystals
Carlos Rodriguez-Navarro, Encarnacion Ruiz-Agudo, Ana Luque, Alejandro B. Rodriguez-Navarro, and Miguel Ortega-Huertas

594

Synchrotron M??ssbauer spectroscopic study of ferropericlase at high pressures and temperatures
Jung-Fu Lin, Alexander G. Gavriliuk, Wolfgang Sturhahn, Steven D. Jacobsen, Jiyong Zhao, Michael Lerche, and Michael Hu

600

Effective radii of noble gas atoms in silicates from first-principles molecular simulation
Liqun Zhang, James A. Van Orman, and Daniel J. Lacks

648

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

638

Presentation of the Roebling Medal for 2008 of Mineralogical Society of America to Bernard W. Evans
Donna L. Whitney

639

Acceptance of the Mineralogical Society of America Roebling Medal for 2008
Bernard W. Evans

643

Acceptance of the Mineralogical Society of America Award for 2008
James Badro

644

Presentation of the Mineralogical Society of America Dana Medal for 2008 to Thomas Armbruster
Martin Kunz

646

Acceptance of the Dana medal of the Mineralogical Society of America for 2008
Thomas Armbruster

655

BOOK REVIEW: FLUID-FLUID INTERACTIONS. Axel Liebscher and Christoph A. Heinrich, Eds. (2007) Reviews in Mineralogy and Geochemistry, 65, 430 p. Mineralogical Society of America, Chantilly, Virginia. ISBN 978-0-939950-77-5.
Bruce Yardley

653

REVIEWERS 2008