ARTICLES

Robert K. Smith, Robin L. Tremallo, and Gary E. Lofgren
Growth of megaspherulites in a rhyolitic vitrophyre    589
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Richard Wirth, Larissa F. Dobrzhinetskaya, and Harry W. Green II
Electron microscope study of the reaction olivine + H₂O + TiO₂ —> titanian clinohumite + titanian chondrodite synthesized at 8 GPa, 1300 K    601
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Ahmed El Goresy, Philippe Gillet, Ming Chen, Friedel Künstler, Günther Graup, and Volker Stähle
In situ discovery of shock-induced graphite-diamond phase transition in gneisses from the Ries Crater, Germany    611
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A.M. Hofmeister and H.K. Mao
Evaluation of shear moduli and other properties of silicates with the spinel structure from IR spectroscopy    622
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Bernard W. Evans, Mark S. Ghiorso, Hexiong Yang, and Olaf Medenbach
Thermodynamics of the amphiboles: Anthophyllite-ferroanthophyllite and the ortho-clino phase loop    640
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Sarah C. Penniston-Dorland
Illumination of vein quartz textures in a porphyry copper ore deposit using scanned cathodoluminescence: Grasberg Igneous Complex, Irian Jaya, Indonesia    652
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John M. Hanchar, Robert J. Finch, Paul W.O. Hoskin, E. Bruce Watson, Daniele J. Cherniak, and Anthony N. Mariano
Rare earth elements in synthetic zircon: Part 1. Synthesis, and rare earth element and phosphorus doping    667
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Robert J. Finch, John M. Hanchar, Paul W. O. Hoskin, and Peter C. Burns
Rare-earth elements in synthetic zircon: Part 2. A single-crystal X-ray study of xenotime substitution    681
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Piera Benna and Emiliano Bruno
Single-crystal in situ high-temperature structural investigation on strontium feldspar    690
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Deposit Item

John Rakovan, Matthew Newville, and Steve Sutton
Evidence of heterovalent europium in zoned Llallagua apatite using wavelength dispersive XANES    697
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David A. McKeown and Jeffrey E. Post
Characterization of manganese oxide mineralogy in rock varnish and dendrites using X-ray absorption spectroscopy    701
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Max Wilke, François Farges, Pierre-Emmanuel Petit, Gordon E. Brown Jr., and François Martin
Oxidation state and coordination of Fe in minerals: An Fe K-XANES spectroscopic study    714
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P. Refait, M. Abdelmoula, F. Trolard, J.-M. R. Génin, J.J. Ehrhardt, and G. Bourrié
Mössbauer and XAS study of a green rust mineral; the partial substitution of Fe²⁺ by Mg²⁺    731
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Nobuyoshi Miyajima, Takehiko Yagi, Kei Hirose, Tadashi Kondo, Kiyoshi Fujino, and Hiroyuki Miura
Potential host phase of aluminum and potassium in the Earth's lower mantle    740
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Luca Bindi, Michael Czank, François Röthlisberger, and Paola Bonazzi
Hardystonite from Franklin Furnace: A natural modulated melilite    747
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S.L. Chaplot and N. Choudhury
Molecular dynamics simulations of seismic discontinuities and phase transitions of MgSiO₃ from 4 to 6-coordinated silicate via a novel 5-coordinated phase    752
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Wenhui Duan, Bijaya B. Karki, Renata M. Wentzcovitch, and B.L. Gu
Ab initio study of MgSiO₃ low-clinoenstatite at high pressure    762
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NEW MINERAL NAMES    767

John L. Jambor and Andrew C. Roberts
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MEMORIAL    771

Bobb Carlson
Memorial of Charles B. Sclar, 1925­2001
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BOOK REVIEW    772

William B. White
LUMINESCENCE. Edited by G. Remond, L. Balk, and D.J.Marshall. Scanning Microscopy Supplement 9, Proceedings of the 13th Pfefferkorn Conference, 1995.
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