600

In-situ Raman spectra of dissolved silica species in aqueous fluids to 900°C and 14 kbar
Nikolay Zotov and Hans Keppler

604

Quetzalcoatlite: A new octahedral-tetrahedral structure from a 2 x 2 x 40 mm³ crystal at the Advanced Photon Source-GSE-CARS Facility
Peter C. Burns, Joseph J. Pluth, Joseph V. Smith, Peter Eng, Ian Steele, and Robert M. Housley

608

Bonding and dynamics of Mg in pyrope: a theoretical investigation
Bj??rn Winkler, Victor Milman, Elena V. Akhmatskaya, and Ross H. Nobes

613

Structure of a new Al-rich phase, [K, Na]_0.9[Mg, Fe]₂[Mg, Fe, Al,Si]₆O₁₂,synthesized at 24 GPa
Tibor Gasparik, Akhilesh Tripathi, and John B. Parise

619

Core level electron binding energies of realgar (As₄S₄)
A.R. Pratt and H.W. Nesbitt

623

Oxidation of {100} and {111} surfaces of pyrite: Effects of preparation method
Alicia R. Elsetinow, Jeffrey M. Guevremont, Daniel R. Strongin, Martin A.A. Schoonen, and Myron Strongin

578

Sodic-ferripedrizite, a new monoclinic amphibole bridging the magnesium-iron-manganese-lithium and the sodium-calcium groups
Roberta Oberti, Josè M. Caballero, Luisa Ottolini, Sol López-Andrès, and Victor Herreros

397

Iron concentration and the physical processes of dynamic oxidation in an alkaline earth aluminosilicate glass
Glen B. Cook and Reid F. Cooper

407

A crystal chemical re-evaluation of amphibole/melt and amphibole/clinopyroxene D_Ti values in petrogenetic studies
Roberta Oberti, Riccardo Vannucci, Alberto Zanetti, Massimo Tiepolo, and Richard C. Brumm

420

Mineralogy of mafic xenoliths and their reaction zones in the olivine lamproite from Prairie Creek Arkansas and the paragenesis of haggertyite, Ba[Fe₆Ti₅Mg]O₁₉
Danielle Velde

430

Magmatic anhydrite in granitic rocks: First occurrence and potential petrologic consequences
Andrew P. Barth and Michael J. Dorais

436

Crystal chemistry of Al-rich biotites coexisting with muscovites in peraluminous granites
Maria Franca Brigatti, Paola Frigieri, Claudio Ghezzo, and Luciano Poppi

449

Spectroscopic and structural properties of synthetic micas on the annite-siderophyllite binary: Synthesis, crystal structure refinement, Mössbauer, and infrared spectroscopy
Günther J. Redhammer, Anton Beran, Julius Schneider, Georg Amthauer, and Werner Lottermoser

466

Thermodynamic properties of tremolite: A correction and some comments
Bernard W. Evans, Mark S. Ghiorso, and Scott M. Kuehner

473

Raman spectroscopic characteristics of Mg-Fe-Ca pyroxenes
E. Huang, C.H. Chen, T. Huang, E.H. Lin, and Ji-an Xu

480

Hydrogen in diopside: Diffusion profiles
Susan Carpenter Woods, Stephen Mackwell, and Darby Dyar

488

Diffusion of C and O in calcite at 100 MPa
T.C. Labotka, D.R. Cole, and L.R. Riciputi

495

Solubility and stability of zeolites in aqueous solution: II. Calcic clinoptilolite and mordenite
Liane G. Benning, Richard T. Wilkin, and Hubert L. Barnes

509

TEM and SFM of exsolution and twinning in an alkali feldspar
Huifang Xu, David R. Veblen, Peter Buseck, and B.L. Ramakrishna

514

Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure
Camilla Haavik, Svein Stølen, Helmer Fjellvåg, Michael Hanfland, and Daniel Häusermann

524

Optimization of site occupancies in minerals using quadratic programming
Stephen E. Wright, Jeffrey A. Foley, and John M. Hughes

532

Leverage analysis and structure refinement of minerals
Marcello Merli, Luciano Ungaretti, Roberta Oberti

543

The absolute energy positions of conduction and valence bands of selected semiconducting minerals
Denis Andrault, Guillaume Fiquet, Thomas Charpin, and Tristan le Bihan

557

Antiferroelectric phase transition in titanite: Excess entropy and short range order
Stuart A. Hayward, Jaime del Cerro, and Ekhard K.H. Salje

563

P4/n and P4nc long-range ordering in low- temperature vesuvianites
Thomas Armbruster and Edwin Gnos

570

Tetrahedral vacancies and cation ordering in low-temperature Mn-bearing vesuvianites: Indication of a hydrogarnet-like substitution
Thomas Armbruster and Edwin Gnos

586

The crystal structure of peprossiite-(Ce), an anhydrous REE and Al mica-like borate with square-pyramidal coordination for Al
Athos Callegari, Franca Caucia, Fiorenzo Mazzi, Roberta Oberti, Luisa Ottolini, and Luciano Ungaretti

593

Crystal chemistry of the new mineral brandholzite, Mg(H₂O)₆[Sb(OH)₆]₂, and of the synthetic analogues M²⁺(H₂O)₆[Sb(OH)₆]₂ (M²⁺ = Mg, Co)
Alexandra Friedrich, Manfred Wildner, Ekkehart Tillmanns, and Peter L. Merz

627

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

631

BOOK REVIEW: Dana’s New Mineralogy by Richard V. Gaines, H. Catherine Skinner, Eugene E. Foord, Brian Mason, and Abraham Rosenzweig, John Wiley & Sons, 1997
Paul Pohwat

632

ERRATUM: M. D. Ruiz Cruz, E. Puga, and J. M. Nieto. Silicate and oxide exsolution in pseudo-spinifex olivine from metaultramafic rocks of the Betic Ophiolitic Association: A TEM study

407

A crystal chemical re-evaluation of amphibole/melt and amphibole/clinopyroxene D_Ti values in petrogenetic studies
Roberta Oberti, Riccardo Vannucci, Alberto Zanetti, Massimo Tiepolo, and Richard C. Brumm

436

Crystal chemistry of Al-rich biotites coexisting with muscovites in peraluminous granites
Maria Franca Brigatti, Paola Frigieri, Claudio Ghezzo, and Luciano Poppi

563

P4/n and P4nc long-range ordering in low- temperature vesuvianites
Thomas Armbruster and Edwin Gnos

570

Tetrahedral vacancies and cation ordering in low-temperature Mn-bearing vesuvianites: Indication of a hydrogarnet-like substitution
Thomas Armbruster and Edwin Gnos

578

Sodic-ferripedrizite, a new monoclinic amphibole bridging the magnesium-iron-manganese-lithium and the sodium-calcium groups
Roberta Oberti, Josè M. Caballero, Luisa Ottolini, Sol López-Andrès, and Victor Herreros

586

The crystal structure of peprossiite-(Ce), an anhydrous REE and Al mica-like borate with square-pyramidal coordination for Al
Athos Callegari, Franca Caucia, Fiorenzo Mazzi, Roberta Oberti, Luisa Ottolini, and Luciano Ungaretti