921

Hydroxyl in omphacites and omphacitic clinopyroxenes of upper mantle to lower crustal origin beneath the Siberian platform
Monika Koch-Müller, Stanislav S. Matsyuk, and Richard Wirth

976

Hydrothermal synthesis and crystal chemistry of the new strontium uranyl selenites,
Sr[(UO₂)₃(SeO₃)₂O₂]·4H₂O and Sr[UO₂(SeO₃)₂]
Philip M. Almond and Thomas E. Albrecht-Schmitt

981

Study of cation order-disorder in MgAl₂O₄ spinel by in situ neutron diffraction up to 1600 K and 3.2 GPa
Fabienne Méducin, Simon A.T. Redfern, Yann Le Godec, Howard J. Stone, Matt G. Tucker, Martin T. Dove, and William G. Marshall

987

Magnetic granulometry from equilibrium magnetization measurements: Mineral magnetometry of superparamagnetic particles and application to synthetic ferrihydrites
Denis G. Rancourt, Fedora González-Lucena, and Pierre-Jean Thibault

1087

Lindbergite, a new Mn oxalate dihydrate from Boca Rica mine, Galiléia, Minas Gerais, Brazil, and other occurrences
Daniel Atencio, José M.V. Coutinho, Stefan Graeser, Paulo A. Matioli, and Luiz A.D. Menezes Filho

1092

Pyrophyllite dehydroxylation process by First Principles calculations
C. Ignacio Sainz-Díaz, Elizabeth Escamilla-Roa, and Alfonso Hernández-Laguna

1110

The structure of the manganese oxide on the sheath of the bacterium Leptothrix discophora: An XAFS study
Astrid Jürgensen, Joline R. Widmeyer, Robert A. Gordon, Leah I. Bendell-Young, Margo M. Moore, and E. Daryl Crozier

1142

Cation disorder in dolomite, CaMg(CO₃)₂, and its influence on the aragonite + magnesite ↔ dolomite reaction boundary
Sytle M. Antao, Willem H. Mulder, Ishmael Hassan, Wilson A. Crichton, and John B. Parise

1148

Ordering in spinels—A Monte Carlo study: Discussion
Giovanni B. Andreozzi, Francesco Princivalle, Henrik Skogby, and Antonio Della Giusta

1149

Ordering in spinels—A Monte Carlo study: Reply
M. Yu. Lavrentiev, J. A. Purton, and N.L. Allan

1138

Incorporation of sodium into the chlorite structure: the crystal structure of glagolevite, Na(Mg,Al)₆[Si₃AlO₁₀](OH,O)₈
Sergey V. Krivovichev, Thomas Armbruster, Natalia I. Organova, Peter C. Burns, Maxim V. Seredkin, and Nikita V. Chukanov

932

Structural variations induced by difference of the inert pair effect in the stibnite-bismuthinite solid solution series (Sb,Bi)₂S₃
Atsushi Kyono and Mitsuyoshi Kimata

941

Hydrogen solubility and speciation in natural, gem-quality chromian diopside
Geoffrey D. Bromiley, Hans Keppler, Catherine McCammon, Fiona A. Bromiley, and Steven D. Jacobsen

950

Ultrastructure, aggregation-state, and crystal growth of biogenic nanocrystalline sphalerite and wurtzite
John W. Moreau, Richard I. Webb, and Jillian F. Banfield

961

Impactite from Henbury, Australia
Yang Ding and David R. Veblen

969

Neutron and synchrotron X-ray diffraction study of the structures and dehydration behaviors of ramsdellite and groutellite
Jeffrey E. Post and Peter J. Heaney

998

Hydroxide in kyanite: A quantitative determination of the absolute amount and calibration of the IR spectrum
David. R. Bell, George R. Rossman, Joachim Maldener, Denis Endisch, and Friedel Rauch

1004

Analysis of uranyl-bearing phases by EXAFS spectroscopy: Interferences, multiple scattering, accuracy of structural parameters, and spectral differences
Jeffrey G. Catalano and Gordon E. Brown Jr.

1022

X-ray diffraction evidence for a monoclinic form of stibnite, Sb₂S₃, below 290 K
Satoru Kuze, Douglas Du Boulay, Nobuo Ishizawa, Atsushi Saiki, and Allan Pring

1026

Sulfur species at chalcopyrite (CuFeS₂) fracture surfaces
Sarah L. Harmer, Allen R. Pratt, Wayne H. Nesbitt, and Michael E. Fleet

1033

Dehydration and rehydration process in boggsite: An in situ X-ray single-crystal study
Stefano Zanardi, Giuseppe Cruciani, Alberto Alberti, and Ermanno Galli

1043

Empressite, AgTe, from the Empress-Josephine mine, Colorado, U.S.A.: Composition, physical properties, and determination of the crystal structure
Luca Bindi, Paul G. Spry, and Curzio Cipriani

1048

Correlation of pH-dependent surface interaction forces to amino acid adsorption: Implications for the origin of life
Hugh Churchill, Henry Teng, and Robert M. Hazen

1056

A near-infrared spectroscopic study of hydroxyl in natural chondrodite
P.S.R. Prasad and L.P. Sarma

1061

High-pressure elasticity of a natural magnetite crystal
Hans J. Reichmann and Steven D. Jacobsen

1067

Isotopic and chemical alteration of zircon by metamorphic fluids: U-Pb age depth-profiling of zircon crystals from Barrow’s garnet zone, northeast Scotland
Christopher M. Breeding, Jay J. Ague, Marty Grove, and Andrew L. Rupke

1078

A novel approach to determine high-pressure high-temperature fluid and melt compositions using diamond-trap experiments
Ronit Kessel, Peter Ulmer, Thomas Pettke, Max W. Schmidt, and Alan B. Thompson

1101

Plagioclase from planetary basalts: Chemical signatures that reflect planetary volatile budgets, oxygen fugacity, and styles of igneous differentiation
Jim Karner, J.J. Papike, and C.K. Shearer

1119

An X-ray Rietveld study of piemontite on the join Ca₂Al₃Si₃O₁₂(OH) – Ca₂Mn³⁺₃Si₃O₁₂(OH) formed by hydrothermal synthesis
Mariko Nagashima and Masahide Akasaka

1130

Raman spectroscopy of basic copper(II) and some complex copper(II) sulfate minerals: Implications for hydrogen bonding
Ray L. Frost, Peter A. Williams, Wayde Martens, Peter Leverett, and J. Theo Kloprogge

1150

BOOK REVIEW: MINERALS OF NEVADA By Stephen B. Castor and Gregory C. Ferdock, Nevada Bureau of Mines and Geology, Special publication 31. University of Nevada Press, Reno and Las Vegas; 2004, 512 p.
Anthony R. Kampf

1150

BOOK REVIEW: URANIUM-SERIES GEOCHEMISTRY by B. Bourdon, G.M. Henderson, C.C. Lundstrom, and S.P. Turner (eds.). Mineralogical Society of America Reviews in Mineralogy and Geochemistry, Vol. 52, 2003, 656 p.
Mike Murrell

1150

BOOK REVIEW: INTRODUCTION TO THE PHYSICS OF THE EARTH’S INTERIOR. Second Edition, by Jean-Paul Poirier Cambridge University Press, 2000 312 pp.
Don L. Anderson