LETTER

A.B. Woodland and R.J. Angel
Crystal structure of a new spinelloid with the wadsleyite structure in the system Fe₂SiO₄-Fe₃O₄ and implications for the Earth's mantle    404
Abstract
Full Text (88 K)

ARTICLES

L.Y. Aranovich and R.C. Newton
Reversed determination of the reaction: Phlogopite + quartz = enstatite + potassium feldspar + H₂O in the ranges 750-875 ºC and 2-12 kbar at low H₂O activity with concentrated KCl soluctions     193
Abstract
Full Text (308 K)

T.B. Bai and A.F. Koster van Groos
Phase relations in the system MgO-NaCl-H₂O: The dehydroxylation of brucite in the presence of NaCl-H₂O fluids     205
Abstract
Full Text (88 K)

Andrea M. Koziol and Robert C. Newton
Experimental determination of the reaction: Magnesite + enstatite = forsterite + CO₂ in the ranges 6-25 kbar and 700-1100 ºC     213
Abstract
Full Text (104 K)

Thomas Fockenberg
An experimental study of the pressure-temperature stability of MgMgAl-pumpellyite in the system MgO-Al₂O₃-SiO₂-H₂O     220
Abstract
Full Text (136 K)

Jennifer M. Pickering, Brandon E. Schwab, and A. Dana Johnston
Off-center hot spots: Double thermocouple determination of the thermal gradient in a 1.27 cm (1/2 in.) CaF₂ piston-cylinder furnace assembly     228
Abstract
Full Text (108 K)

D.B. Dingwell, K.-U. Hess, and C. Romano
Viscosity data for hydrous peraluminous granitic melts: Comparison with a metaluminous model     236
Abstract
Full Text (44 K)

Akiko Nagasaki and Masaki Enami
Sr-bearing zoisite and epidote in ultra-high pressure (UHP) metamorphic rocks from the Su-Lu province, eastern China: An important Sr reservoir under UHP conditions     240
Abstract
Full Text (344 K)

Fritz Finger, Igor Broska, Malcolm P. Roberts, and Andreas Schermaier
Replacement of primary monazite by apatite-allanite-epidote coronas in an amphibolite facies granite gneiss from the eastern Alps     248
Abstract
Full Text (216 K)

Hans-Jürgen Förster
The chemical composition of REE-Y-Th-U-rich accessory minerals in peraluminous granites of the Erzgebirge-Fichtelgebirge region, Germany, Part I: The monazite-(Ce)-brabantite solid solution series     259
Abstract
Full Text (292 K)

Martin Radvanec, Shohei Banno, and W.G. Ernst
Chemical microstructure of Franciscan jadeite from Pacheco Pass, California     273
Abstract
Full Text (724 K)

Jianzhong Zhang, Isabelle Martinez, Francois Guyot, and Richard J. Reeder
Effects of Mg-Fe²⁺ substitution in calcite-structure carbonates: Thermoelastic properties     280
Abstract
Full Text (104 K)

(Contents continued on outside back cover)

(Contents continued from front cover)

Hexiong Yang, Robert M. Hazen, Charles T. Prewitt, Larry W. Finger, Ren Lu, and Russell J. Hemley
High-pressure single-crystal X-ray diffraction and infrared spectroscopic studies of the C2/m-P2₁/m phase transition in cummingtonite     288
Abstract
Full Text (144 K)

Delphine Cabaret, Philippe Sainctavit, Philippe Ildefonse, and Anne-Marie Flank
Full multiple scattering calculations of the X-ray absorption near edge structure at the magnesium K-edge in pyroxene     300
Abstract
Full Text (76 K)

H.W. Nesbitt and D. Banerjee
Interpretation of XPS Mn(2p) spectra of Mn oxyhydroxides and constraints on the mechanism of MnO₂ precipitation     305
Abstract
Full Text (292 K)

M.J. Scaini, G.M. Bancroft, and S.W. Knipe
Reactions of aqueous Au¹⁺ sulfide species with pyrite as a function of pH and temperature     316
Abstract
Full Text (144 K)

François Farges
Mineralogy of the Louvres Merovingian garnet cloisonné jewelry: Origins of the gems of the first kings of France     323
Abstract
Full Text (208 K)

Andrzej Grzechnik and Paul F. McMillan
Temperature dependence of the OH^- absorption in the SiO₂ glass and melt to 1975 K     331
Abstract
Full Text (84 K)

Yeongkyoo Kim and R. James Kirkpatrick
High-temperature multi-nuclear NMR investigation of analcime     339
Abstract
Full Text (144 K)

Jillian F. Banfield and Takashi Murakami
Atomic-resolution transmission electron microscope evidence for the mechanism by which chlorite weathers to 1:1 semi-regular chlorite-vermiculite     348
Abstract
Full Text (1 MB)

Toshihiro Kogure and Takashi Murakami
Structure and formation mechanism of low-angle grain boundaries in chlorite     358
Abstract
Full Text (1.2 MB)

Mihály Pósfai and Margareta Sundberg
Stacking disorder and polytypism in enargite and luzonite     365
Abstract
Full Text (1 MB)

Mihály Pósfai and Peter R. Buseck
Relationships between microstructure and composition in enargite and luzonite     373
Abstract
Full Text (920 K)

Halil Sarp and Radovan Cerny
Description and crystal structure of Yvonite, Cu(AsO₃OH)2H₂O     383
Abstract
Full Text (208 K)

Mark A. Cooper, Frank C. Hawthorne, Andrew C. Roberts, Joel D. Grice, John A.R. Stirling, and Elizabeth A. Moffatt
Georgeericksenite, Na₆CaMg(IO₃)₆(CrO₄)₂(H₂O)₁₂, a new mineral from Oficina Chacabuco, Chile: Description and crystal structure     390
Abstract
Full Text (208 K)
Deposit Items

NEW MINERAL NAMES    400

John L. Jambor and Andrew C. Roberts
Full text (76 K)