110

Phosphate mineral associations in the Cañada pegmatite (Salamanca, Spain): Paragenetic relationships, chemical compositions, and implications for pegmatite evolution
Encarnación Roda, Alfonso Pesquera, François Fontan, and Paul Keller

164

A computational investigation of the Al/Fe/Mg order-disorder behavior in the dioctahedral sheet of phyllosilicates
Erika J. Palin, Martin T. Dove, Alfonso Hernández-Laguna, and C. Ignacio Sainz-Díaz

239

Novel phase transition in orthoenstatite
Jennifer M. Jackson, Stanislav V. Sinogeikin, Michael A. Carpenter, and Jay D. Bass

245

In situ observation of the thermal decomposition of weddelite by heating stage environmental scanning electron microscopy
J. Theo Kloprogge, Thor E. Bostr??m, and Matt L. Weier

1

Indialite in xenolithic rocks from Somma-Vesuvius volcano (Southern Italy): Crystal chemistry and petrogenetic features
Giuseppina Balassone, Enrico Franco, Carlo Andrea Mattia, and Raffaella Puliti

7

Coexisting chromian omphacite and diopside in tremolite schist from the Chugoku Mountains, SW Japan: The effect of Cr on the omphacite-diopside immiscibility gap
Tatsuki Tsujimori and Juhn G. Liou

15

2111 biopyribole intermediate between pyroxene and amphibole: Artifact or natural product?
Hiromi Konishi, Reijo Alviola, and Peter R. Buseck

20

Coexisting clinopyroxene/spinel and amphibole/spinel symplectites in metatroctolites from the Buck Creek ultramafic body, North Carolina Blue Ridge
Helen M. Lang, Aletha J. Wachter, Virginia L. Peterson, and Jeffrey G. Ryan

31

The T-X dependence of the isosymmetric displacive phase transition in synthetic Fe³⁺-Al zoisite: A temperature-dependent infrared spectroscopy study
Axel Liebscher and Matthias Gottschalk

39

A kinetic study of the exsolution of pentlandite (Ni,Fe)₉S₈ from the monosulfide solid solution (Fe,Ni)S
Barbara Etschmann, Allan Pring, Andrew Putnis, Benjamin A. Grguric, and Andrew Studer

51

Single-crystal plagioclase feldspar dissolution rates measured by vertical scanning interferometry
Rolf S. Arvidson, Mikala S. Beig, and Andreas Luttge

57

A simple empirical method for high-quality electron microprobe analysis of fluorine at trace levels in Fe-bearing minerals and glasses
Jeffrey B. Witter and Scott M. Kuehner

64

Constraints on mingling of crystal populations from off-center zoning profiles: A statistical approach
Glen S. Wallace and George W. Bergantz

74

Pyribole evolution during tremolite synthesis from oxides
Krassimir N. Bozhilov, David M. Jenkins, and David R. Veblen

85

Solution calorimetric determination of the enthalpies of formation of NH₄-bearing minerals buddingtonite and tobelite
Guy L. Hovis, Daniel Harlov, and Matthias Gottschalk

94

Dehydration dynamics of bikitaite: Part I. In situ synchrotron powder X-ray diffraction study
Orazio Ferro, Simona Quartieri, Giovanna Vezzalini, Chiara Ceriani, Ettore Fois, Aldo Gamba, and Giuseppe Cruciani

102

Dehydration dynamics of bikitaite: Part II. Ab initio molecular dynamics study
Chiara Ceriani, Ettore Fois, Aldo Gamba, Gloria Tabacchi, Orazio Ferro, Simona Quartieri, and Giovanna Vezzalini

126

An improved equation for crystal size distribution in second-phase influenced aggregates
Alfons Berger

132

Vibrational spectroscopy of pyrope-majorite garnets: Structural implications
A.M. Hofmeister, P.A. Giesting, B. Wopenka, G.D. Gwanmesia, and B.L. Jolliff

147

The modulated crystal structure of antigorite: The m = 17 polysome
Giancarlo Capitani and Marcello Mellini

159

Structural variations in mercurian tetrahedrite
Franklin F. Foit Jr. and John M. Hughes

176

Investigation of Al/Si ordering in tetrahedral phyllosilicate sheets by Monte Carlo simulation
Erika J. Palin and Martin T. Dove

185

Equations of state of ZrSiO₄ phases in the upper mantle
Shigeaki Ono, Yoshinori Tange, Ikuo Katayama, and Takumi Kikegawa

189

High-pressure behavior, transformation and crystal structure of synthetic iron-free pigeonite
Fabrizio Nestola, Mario Tribaudino, and Tiziana Boffa Ballaran

197

In situ determination of the compressibility of synthetic pure zircon (ZrSiO₄) and the onset of the zircon-reidite phase transition
Wim van Westrenen, Mark R. Frank, John M. Hanchar, Yingwei Fei, Robert J. Finch, and Chang-Sheng Zha

204

Halite-sylvite thermoelasticity
David Walker, Pramod K. Verma, Lachlan M.D. Cranswick, Raymond L. Jones, Simon M. Clark, and Stephan Buhre

211

Spiral growth of grossular under hydrothermal conditions
Ralf Milke

219

Incomplete retention of radiation damage in zircon from Sri Lanka
Lutz Nasdala, Peter W. Reiners, John I. Garver, Allen K. Kennedy, Richard A. Stern, Etienne Balan, and Richard Wirth

232

Shirozulite, KMn²⁺₃(Si₃Al)O₁₀(OH)₂, a new manganese-dominant trioctahedral mica: Description and crystal structure
Kiyotaka Ishida, Frank C. Hawthorne, and Fumitoshi Hirowatari

249

NEW MINERAL NAMES
John L. Jambor, and Andrew C. Roberts

254

BOOK REVIEW: APPLICATIONS OF SYNCHROTRON RADIATION IN LOW-TEMPERATURE GEOCHEMISTRY AND ENVIRONMENTAL SCIENCE. P.A. Fenter, M.L. Rivers, N. C. Sturchio, and S.R. Sutton, Eds., Reviews in Mineralogy & Geochemistry, 2002, vol. 49, 579 p. Mineralogical Society of America, Washington, D.C.
Martine C. Duff

248

ERRATUM: The distribution of zeolites and their effects on the performance of a nuclear waste repository at Yucca Mountain, Nevada, U.S.A. by D.L. Bish, D.T. Vaniman, S.J. Chipera, and J.W. Carey (November-December 2003, vol. 88, no. 11-12, Part 2, 1889-1902).