American Mineralogist, 1998, V 83, N 11-12, Part 1.

LETTERS

Jeffrey M. Guevremont, Alicia R. Elsetinow, Daniel R. Strongin, Joakim
Bebie, and Martin A.A. Schoonen
Structure sensitivity of pyrite oxidation: Comparison of the (100) and
(111) planes, 
1353

H.J. Reichmann, R.J. Angel, H. Spetzler, and W.A. Bassett
Ultrasonic interferometry and X-ray measurements on MgO in a new diamond
anvil cell, 
1352

M. Darby Dyar, Jeremy S. Delaney, Steven R. Sutton, and Martha Schaefer
Fe3+ distribution in oxidized olivine: A synchrotron micro-XANES study,
1361


ARTICLES

K. Tobias Winther, E. Bruce Watson, and Gerald M. Korenowski
Magmatic sulfur compounds and sulfur diffusion in albite melt at 1 GPa and
1300-1500 _C, 
1141

Christopher J. Capobianco
Ruthenium solubility in hematite, 
1152

Clifford S. Todd
Limits on the precision of geobarometry at low grossular and anorthite
content, 
1161

R. Knoche, R.J. Angel, F. Seifert, and T.F. Fliervoet
Complete substitution of Si for Ti in titanite Ca(Ti1-xSix)VISiIVO5, 
1168

Thilo Arlt, Ross J. Angel, Ronald Miletich, Thomas Armbruster, and Tjerk
Peters
High-pressure P21/c-C2/c phase transitions in clinopyroxenes: Influence of
cation size and electronic structure, 
1176

Deposit item
 
Ray L. Frost, J. Theo Kloprogge, Thu Ha Thi Tran, and Janos Kristof
The effect of pressure on the intercalation of an ordered kaolinite, 
1182

Victor A. Drits, Holger Lindgreen, Alfred L. Salyn, Robert Ylagan, and
Douglas K. McCarty
Semiquantitative determination of trans-vacant and cis-vacant 2:1 layers in
illites and illite-smectites by thermal analysis and X-ray diffraction,
1188

Douglas M. Yates and Philip E. Rosenberg
Characterization of neoformed illite from hydrothermal experiments at 250
_C and Pv,,soln: An HRTEM/ATEM study, 
1199

Takashi Murakami, Toshihiro Kogure, Hiroyuki Kadohara, and Toshihiko Ohnuki
Formation of secondary minerals and its effect on anorthite dissolution,
1209

Dean Nevins and Frank J. Spera
Molecular dynamics simulations of molten CaAl2Si2O8: Dependence of
structure and properties on pressure,
1220

Benjamin A. Grguric, Andrew Putnis, and Richard J. Harrison
An investigation of the phase transitions in bornite (Cu5FeS4) using
neutron diffraction and differential scanning calorimetry, 
1231

L.M. Maddox, G.M. Bancroft, M.J. Scaini, and J.W. Lorimer
Invisible gold: Comparison of Au deposition on pyrite and arsenopyrite,
1240

Jeffrey M. Guevremont, Daniel R. Strongin, and Martin A.A. Schoonen
Thermal chemistry of H2S and H2O on the (100) plane of pyrite: Unique
reactivity of defect sites, 
1246

Daniel L. Legrand, H. Wayne Nesbitt, and G. Michael Bancroft
X-ray photoelectron spectroscopic study of a pristine millerite (NiS)
surface and the effect of air and water oxidation, 
1256

P. Rehak, G. Kunath-Fandrei, P. Losso, B. Hildmann, H. Schneider, and C.
J‰ger
Study of the Al coordination in mullites with varying Al:Si ratio by 27Al
NMR spectroscopy and X-ray diffraction, 
1266

Anna M. George, Pascal Richet, and Jonathan F. Stebbins
Cation dynamics and premelting in lithium metasilicate (Li2SiO3) and sodium
metasilicate (Na2SiO3): A high-temperature NMR study, 
1277

Peter S. Fiske, William J. Nellis, Zhi Xu, and Jonathan F. Stebbins
Shocked quartz: A 29Si magic-angle spinning nuclear magnetic resonance
study, 
1285

Anne M. Hofmeister, Rand B. Schaal, Karla R. Campbell, Sandra L. Berry, and
Timothy J. Fagan
Prevalence and origin of birefringence in 48 garnets from the
pyrope-almandine-grossularite-spessartine quaternary, 
1293

Hans-J¸rgen Fˆrster
The chemical composition of REE-Y-Th-U rich accessory minerals in
peraluminous granites of the Erzgebirge-Fichtelgebirge region, Germany.
Part II: Xenotime, 
1302

Isamu Shinno and Zhe Li
Octahedral site Fe2+ quadrupole splitting distributions from the Mˆssbauer
spectra of arrojadite, 
1316

Ian E. Grey, Danielle Velde, and Alan J. Criddle
Haggertyite, a new magnetoplumbite-type titanate mineral from the Prairie
Creek (Arkansas) lamproite, 
1323

Paolo Orlandi, Marco Pasero, and Giovanna Vezzalini
Scandiobabingtonite, a new mineral from the Baveno pegmatite, Piedmont,
Italy, 
1330

David K. Teertstra, Petr Cerny, Frank C. Hawthorne, Julie Pier, Lu-Min
Wang, and Rodney C. Ewing
Rubicline, a new feldspar from San Piero in Campo, Elba, Italy, 
1335

VladimĖr Bouska, Ivana CĖsarovˇ, Roman Skˇla, Zdenek Dvorˇk, Jaroslav
Zelinka, and Karel Zˇk
Hartite from BĖlina,
1340

NEW MINERAL NAMES, 1347

SPECIAL NOTICE, IMA Report on Micas, 1366

ERRATUM, 1367

AUTHOR INDEX, 1369

SUBJECT INDEX, 13xx