AMERICAN MINERALOGIST, 1997, V82, N7-8.




            LETTERS
  R.J. Angel
  Transformation of fivefold-coordinated silicon to octahedral silicon in 
  calcium silicate, CaSi2O5                                 P.836

ARTICLES J. David Hobbs, Randall T. Cygan, Kathryn L. Nagy, Peter A. Schultz, and Mark P. Sears All-atom ab initio energy minimization of the kaolinite crystal structure P.657 Renata M. Wentzcovitch and Lars Stixrude Crystal chemistry of forsterite: A first-principles study P.663 O.V. Krasovska, B. Winkler, E.E. Krasovskii, A.N. Yaresko, V.N. Antonov, and N. Langer Ab initio calculation of the pleochroism of fayalite P.672 Jutta Chrosch, Ulrich Bismayer, and Ekhard K.H. Salje Anti-phase boundaries and phase transitions in titanite: An X-ray diffraction study P. 677 Nancy L. Ross The equation of state and high-pressure behavior of magnesite P. 682 Demelza Hugh-Jones Thermal expansion of MgSiO3 and FeSiO3 ortho- and clinopyroxenes P. 689 Ronald Miletich, David R. Allan, and Ross J. Angel The synthetic Cr2+ silicates BaCrSi4O10 and SrCrSi4O10: The missing links in the gillespite-type ABSi4O10 series P.697 Frank C. Hawthorne, Giancarlo Della Ventura, Jean-Louis Robert, Mark D. Welch, Mati Raudsepp, and David M. Jenkins A Rietveld and infrared study of synthetic amphiboles along the potassium-richterite-tremolite join P.708 Amy A. Gribb and Jillian F. Banfield Particle size effects on transformation kinetics and phase stability in nanocrystalline TiO2 P.717 Giuseppe Cruciani, Gilberto Artioli, Alessandro Gualtieri, Kenny Stâhl, and Jonathan C. Hanson Dehydration dynamics of stilbite using synchrotron X-ray powder diffraction P.729 Charles A. Geiger and Thomas Armbruster Mn3Al2Si3O12 spessartine and Ca3Al2Si3O12 grossular garnet: Structural dynamic and thermodynamic properties P.740 Dimitrios Xirouchakis, Martin Kunz, John B. Parise, and Donald H. Lindsley Synthesis methods and unit-cell volume of end-member titanite (CaTiOSiO4) P.748 Dimitrios Xirouchakis, Sophie Fritsch, Robert L. Putnam, Alexandra Navrotsky, and Donald H. Lindsley Thermochemistry and the enthalpy of formation of synthetic end-member (CaTiSiO5) titanite P.754 Bernd Wunder, Alain Baronnet, and Werner Schreyer Ab-initio synthesis and TEM confirmation of antigorite in the system MgO-SiO2-H2O P.760 Renaud Podor and Michel Cuney Experimental study of Th-bearing LaPO4 (780 °C, 200 MPa): Implications for monazite and actinide orthophosphate stability P.765 René Gratz and Wilhelm Heinrich Monazite-xenotime thermobarometry: Experimental calibration of the miscibility gap in the binary system CePO4-YPO4 P.772 Carlos Jové and Bradley R. Hacker Experimental investigation of laumontite wairakite + H2O: A model diagenetic reaction P.781 E.D. Young, D. Virgo, and R.K. Popp Eliminating closure in mineral formulae with specific application to amphiboles P.790 Paolo Orlandi, Marco Pasero, Giuseppe Duchi, and Filippo Olmi Dessauite, (Sr,Pb)(Y,U)(Ti,Fe3+)20O38, a new mineral of the crichtonite group from Buca della Vena mine, Tuscany,Italy P.807 Ignasi Queralt, Ramon Juliá, Feliciano Plana, and James L. Bischoff A hydrous Ca-bearing magnesium carbonate from playa lake sediments, Salines Lake, Spain P.812
NEW MINERAL NAMES P.820
PRESENTATION OF AWARDS FOR 1996 B. Ronald Frost Presentation of the Roebling Medal of the Mineralogical Society of America for 1996 to Donald H. Lindsley P.824 Donald H. Lindsley Acceptance of the Roebling Medal of the Mineralogical Society of America for 1996 P.826 David Virgo Presentation of the Mineralogical Society of America Award for 1996 to Donald B. Dingwell P.829 Donald Bruce Dingwell Acceptance of the Mineralogical Society of America Award for 1996 P.831 L.J. Patrick Muffler Presentation of the Distinguished Public Service Medal for 1996 to Robert I. Tilling P.833 Robert I. Tilling Acceptance of the Distinguished Public Service Medal for 1996 834
BOOK REVIEW P.840