AMERICAN MINERALOGIST, 1997, V82, N11-12.

             ARTICLES
  John Brodholt
  Ab initio calculations on point defects in forsterite (Mg2SiO4) 
  and implications for diffusion and creep                  p 1049

  Tullio Pilati, Francesco Demartin, and Carlo Maria Gramaccioli
  Lattice-dynamical evaluation of thermodynamic properties and 
  atomic displacement parameters for beryl using a transferable
  empirical force field                                     p 1054

  Ralf Siewert and Matthias Rosenhauer
  Viscoelastic relaxation measurements in the system SiO2-NaAlSiO4 
  by photon correlation spectroscopy                        p 1063

  Takeshi Hoshi and Tokuhei Tagai
  TEM investigation of potassium-calcium feldspar inclusions 
  in Břggild plagioclase                                    p 1073

  Ulrich Klein, Thomas G. Sharp, and John C. Schumacher
  Analytical electron microscopy of nanometer-scale hornblende 
  lamellae: Low-temperature exsolution in cummingtonite     p 1079

  Vidal Barrón, Natividad Gálvez, Michael F. Hochella, Jr., and Jose Torrent
  Epitaxial overgrowth of goethite on hematite synthesized in phosphate 
  media: A scanning force and transmission electron
  microscopy study                                          p 1091

  Weixin Xu, Donald R. Peacor, Wayne A. Dollase, Rob Van Der Voo, 
  and Rick Beaubouef
  Transformation of titanomagnetite to titanomaghemite; 
  A slow, two-step oxidation-ordering process in MORB       p 1101

  Eugen Libowitzky and George R. Rossman
  An IR absorption calibration for water in minerals        p 1111

  J. F. Stebbens, J. V. Oglesby, and Z. Xu
  Disorder among network-modifier cations in silicate glasses: 
  New constraints from triple-quantum 17O NMR               p 1116

  Hideki Maekawa, Satoshi Kato, Katsuyuki Kawamura, and Toshio Yokokawa
  Cation mixing in natural MgAl2O4 spinel: A high-temperature 27Al NMR 
  study                                                     p 1125

  Simon Kohn, C. Michael B. Henderson, and Ray Dupree
  Si-Al ordering in leucite-group minerals and ion-exchanged analogues: 
  An MAS NMR study                                          p 1133

  S. M. Halle and B. J. Wuensch
  Comparison of the crystal chemistry of selected MSi6O15-based 
  silicates                                                 p 1141

  Alain Manceau, Victor A. Drits, Ewen Silvester, Céline Bartoli, 
  and Bruno Lanson
  Structural mechanism of CO2+ oxidation by the phyllomanganate 
  buserite                                                  p 1150

  Peter C. Burns
  A new uranyl oxide hydrate sheet in vandendriesscheite: Implications 
  for mineral paragenesis and the corrosion of spent nuclear
  fuel                                                      p 1176

  P. A. Bland, S. P. Kelley, F. J. Berry, J. M. Cadogan, and C. T. Pillinger
  Artificial weathering of the ordinary chondrite Allegan: Implications 
  for the presence of Cl- as a structural 
  component in akaganéite                                   p 1187

  Robert W. Luth
  Experimental study of the system phlogopite-diopside from 3.5 
  to 17 GPa                                                 p 1198

  Genyong Peng, James F. Luhr, and James J. McGee
  Factors controlling sulfur concentrations in volcanic 
  apatite                                                   p 1210

  C. K. Gessmann, B. Spiering, and M. Raith
  Experimental study of the Fe-Mg exchange between garnet and biotite: 
  Constraints on the mixing behavior and analysis of the
  cation-exchange mechanisms                                p 1225

  Bjřrn Jamtveit, Sven Dahlgren, and Haakon Austrheim
  High-grade contact metamorphism of calcareous rocks from the 
  Oslo Rift, Southern Norway                                p 1241

  Joel Grice and George Y. Chao
  Lukechangite-(Ce), a new rare-earth-fluorocarbonate mineral 
  from Mont Saint-Hilaire, Quebec                           p 1255


             NEW MINERAL NAMES                              p 1261

             AUTHOR INDEX                                   p 1265


             SUBJECT INDEX                                  p 1271