AMERICAN MINERALOGIST, 2000, V 85, N 3-4, March-April.

Glen B. Cook and Reid F. Cooper
Iron concentration and the physical processes of dynamic 
oxidation in an alkaline earth aluminosilicate glass   
397 

Roberta Oberti, Riccardo Vannucci, Alberto Zanetti,
Massimo Tiepolo, and Richard C. Brumm 
A crystal chemical re-evaluation of amphibole/melt and 
amphibole/clinopyroxene DTi values in petrogenetic studies
407

Danielle Velde 
Mineralogy of mafic xenoliths and their reaction
zones in the olivine lamproite from Prairie Creek Arkansas 
and the paragenesis of haggertyite, Ba[Fe6Ti5Mg]O19   
420 

Andrew P. Barth and Michael J.Dorais 
Magmatic anhydrite in granitic rocks: First occurrence and 
Potential petrologic consequences 
430 

Maria Franca Brigatti, Paola Frigieri, Claudio Ghezzo, and
Luciano Poppi 
Crystal chemistry of Al-rich biotites coexisting with muscovites 
In peraluminous granites    
436 

G?nther J. Redhammer, Anton Beran, Julius Schneider, 
Georg Amthauer, and Werner Lottermoser 
Spectroscopic and structural properties of synthetic micas on the
annite-siderophyllite binary: Synthesis, crystal structure
refinement, M?ssbauer, and infrared spectroscopy    
449 

Bernard W. Evans, Mark S. Ghiorso, and Scott M. Kuehner 
Thermodynamic properties of tremolite: A correction and some
comments    
466

E. Huang, C.H. Chen, T. Huang, E.H. Lin, and Ji-an Xu 
Raman spectroscopic characteristics of Mg-Fe-Ca pyroxenes    
473 

Susan Carpenter Woods, Stephen Mackwell, and Darby Dyar 
Hydrogen in diopside: Diffusion profiles    
480 

T.C. Labotka, D.R. Cole, and L.R. Riciputi 
Diffusion of C and O in calcite at 100 MPa    
488 

Liane G. Benning, Richard T.Wilkin, and Hubert L. Barnes 
Solubility and stability of zeolites in aqueous solution: 
II. Calcic clinoptilolite and mordenite    
495 

Huifang Xu, David R. Veblen, Peter Buseck, and B.L.Ramakrishna 
TEM and SFM of exsolution and twinning in an alkali feldspar    
509 

Camilla Haavik, Svein St?len, Helmer Fjellv?g, Michael Hanfland, 
and Daniel H?usermann 
Equation of state of magnetite and its high-pressure modification:
Thermodynamics of the Fe-O system at high pressure    
514 

Stephen E. Wright, Jeffrey A.Foley, and John M. Hughes 
Optimization of site occupancies in minerals using quadratic
programming    
524 

Marcello Merli, Luciano Ungaretti, Roberta Oberti 
Leverage analysis and structure refinement of minerals 
532 

Yong Xu and Martin A.A. Schoonen 
The absolute energy positions of conduction and valence bands of
selected semiconducting minerals   
543 

Stuart A. Hayward, Jaime del Cerro, and Ekhard K.H. Salje 
Antiferroelectric phase transition in titanite: Excess entropy and 
short range order    
557 

Thomas Armbruster and Edwin Gnos 
P4/n and P4nc long-range ordering in low- temperature vesuvianites 
563

Thomas Armbruster and Edwin Gnos 
Tetrahedral vacancies and cation ordering in low-temperature
Mn-bearing vesuvianites: Indication of a hydrogarnet-like substitution 
570 

Roberta Oberti, Jos? M. Caballero, Luisa Ottolini, Sol L?pez-Andr?s, 
and Victor Herreros 
Sodic-ferripedrizite, a new monoclinic amphibole bridging the 
magnesium-iron-manganese-lithium and the sodium-calcium groups   
578 

Athos Callegari, Franca Caucia, Fiorenzo Mazzi, Roberta Oberti, 
Luisa Ottolini, and Luciano Ungaretti 
The crystal structure of peprossiite-(Ce), an anhydrous REE 
and Al mica-like borate with square-pyramidal coordination for Al    
586 

Alexandra Friedrich, Manfred Wildner, Ekkehart Tillmanns,
and Peter L. Merz 
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)    
593


LETTERS 


Nikolay Zotov and Hans Keppler
In-situ Raman spectra of dissolved silica species in aqueous 
fluids to 900°C and 14 kbar
600 

Peter C. Burns, Joseph J. Pluth,Joseph V. Smith, Peter Eng, 
Ian Steele, and Robert M. Housley 
Quetzalcoatlite: A new octahedral-tetrahedral structure
from a 2 x 2 x 40 mm3 crystal at the Advanced Photon
Source-GSE-CARS Facility    
604 

Bj?rn Winkler, Victor Milman, Elena V. Akhmatskaya, and
Ross H. Nobes 
Bonding and dynamics of Mg in pyrope: a theoretical investigation   
608 

Tibor Gasparik, Akhilesh Tripathi, and John B. Parise 
Structure of a new Al-rich phase,[K, Na]0.9[Mg, Fe]2[Mg, Fe, Al,
Si]6O12, synthesized at 24 GPa   
613 

A.R. Pratt and H.W. Nesbitt 
Core level electron binding energies
of realgar (As4S4)    
619 

Alicia R. Elsetinow, Jeffrey M.Guevremont, Daniel R. Strongin,
Martin A.A. Schoonen, and Myron Strongin 
Oxidation of {100} and {111} surfaces of pyrite: Effects of
preparation method    
623 


NEW MINERAL NAMES    
627

BOOK REVIEW    
631 

ERRATUM    
632