American Mineralogist, 2004, V 89, N 10, October.


LETTERS

1557 Comparative planetary mineralogy: V/(Cr + Al) systematics in chromite as an indicator of relative oxygen fugacity J.J. Papike, J.M. Karner, and C.K. Shearer 1561 Porous titanosilicate nanorods in the structure of yuksporite, (Sr,Ba)2K4(Ca,Na)14(Mn,Fe) {(?,Ti,Nb)4(O,OH)4[Si6O17]2[Si2O7]3} (H2O,OH)n, resolved using synchrotron radiation Sergey V. Krivovichev, Viktor N. Yakovenchuk, Thomas Armbruster, Nicola Dobelin, Philipp Pattison, Hans-Peter Weber, and Wulf Depmeier
ARTICLES

1353 The origin of the color of pearls in iridescence from nano-composite structures of the nacre Michael R. Snow, Allan Pring, Peter Self, Dusan Losic, and Joe Shapter 1359 “Invisible” gold revealed: Direct imaging of gold nanoparticles in a Carlin-type deposit Christopher S. Palenik, Satoshi Utsunomiya, Martin Reich, Stephen E. Kesler, Lumin Wang, and Rodney C. Ewing 1367 Behavior of cation vacancy in kenotetrahedral Cr-spinels from Albanian eastern belt ophiolites Ferdinando Bosi, Giovanni B. Andreozzi, Vincenzo Ferrini, and Sergio Lucchesi 1374 Displacement and strain fields around a [100] dislocation in olivine measured to sub-angstrom accuracy Craig L. Johnson, Martin J. Hytch, and Peter R. Buseck 1380 Kiglapait mineralogy IV: The augite series S.A. Morse and Malcolm Ross 1396 Metasomatic formation of kosmochlor-bearing diopside in peridotite xenoliths from North Island, New Zealand Kei Ikehata and Shoji Arai 1405 Determination of standard thermodynamic properties of sulfides in the Ag-Au-S system by means of a solid-state galvanic cell Evgeniy G. Osadchii and Olga A. Rappo 1411 Hydroxyl ordering in igneous apatite R. Chris Tacker 1422 Accommodation of the carbonate ion in apatite: An FTIR and X-ray structure study of crystals synthesized at 2—4 GPa Michael E. Fleet, Xiaoyang Liu, and Penelope L. King 1433 Mg/Si ratios of aqueous fluids coexisting with forsterite and enstatite based on the phase relations in the Mg2SiO4-SiO2-H2O system Tatsuhiko Kawamoto, Kyoko N. Matsukage, Kenji Mibe, Maiko Isshiki, Koshi Nishimura, Naoki Ishimatsu, and Shigeaki Ono 1438 The activity of silica, water, and the equilibration of intermediate and silicic magmas Ian S.E. Carmichael 1447 The CO2—H2O system: IV. Empirical, isothermal equations for representing vapor-liquid equilibria at 110—350 °C, P ? 150 MPa James G. Blencoe 1456 Repercussions of size heterogeneity on the measurement of specific surface areas of colloidal minerals: Combination of macroscopic and microscopic analyses Marie-Camille Jodin, Fabien Gaboriaud, and Bernard Humbert 1464 The crystal-structure of synthetic NaNa2Mg5Si8O21(OH)3, a triclinic C1 amphibole with a triple-cell and excess hydrogen Fernando Camara, Roberta Oberti, Giancarlo Della Ventura, Mark D. Welch, and Walter V. Maresch 1474 High-pressure phase transitions in Ca0.2Sr0.8Al2Si2O8 feldspar Fabrizio Nestola, Tiziana Boffa Ballaran, Piera Benna, Mario Tribaudino, and Emiliano Bruno 1480 Phase transition of Ca-perovskite and stability of Al-bearing Mg-perovskite in the lower mantle Shigeaki Ono, Yasuo Ohishi, and Kenji Mibe 1486 Mineralogy and petrology of a mullite-bearing pseudotachylyte: Constraints on the temperature of coseismic frictional fusion David P. Moecher and Adrian J. Brearley 1496 New developments in two-feldspar thermometry A. Benisek, H. Kroll, and L. Cemic 1505 Ordered distribution of Au and Ag in the crystal structure of muthmannite, AuAgTe2, a rare telluride from Sacarimb, western Romania Luca Bindi and Curzio Cipriani 1510 Polytypism of cookeite in low-grade metapelites of the Cameros Basin, Spain: Lack of correlation of well-ordered polytypes with pressure M. Pilar Mata, Donald R. Peacor, and Francisco Lopez-Aguayo 1516 Evolution of mineral compositions during eclogitization of subducting basaltic crust Juliette F. Forneris and John R. Holloway 1525 Mass balance during retrogression of eclogite-facies minerals in the Rongcheng eclogite, eastern Sulu ultrahigh-pressure terrane, China Tian N. Yang, Zhi Q. Xu, and Mary Leech 1533 Synthesis of REE and Y phosphates by Pb-free flux methods and their utilization as standards for electron microprobe analysis and in design of monazite chemical U-Th-Pb dating protocol D.J. Cherniak, J. Pyle, and John Rakovan 1540 The chemistry and crystal structure of okanoganite-(Y) and comparison with vicanite-(Ce) Massimo Boiocchi, Athos Callegari, Luisa Ottolini, and Adriana Maras 1546 An automated system for phase identification and quantitative composition determination using the electron microprobe: Theory and applications Kurt Steffen 1553 Piston-cylinder calibration at 400 to 500 MPa: A comparison of using water solubility in albite melt and NaCl melting Don R. Baker 1566 New minerals approved in 2003 and nomenclature modifications approved in 2003 by the Commission on New Minerals and Mineral Names, International Mineralogical Association Ernst A.J. Burke (Chairman, CNMMN) and Giovanni Ferraris (Vice-Chairman, CNMMN) 1574 NEW MINERAL NAMES John L. Jambor, Edward J. Grew, A nd Andrew C. Roberts 1579 ERRATUM Composition, Fe3+/?Fe, and crystal structure of non-asbestiform and asbestiform amphiboles from Libby, Montana, U.S.A. by M.E. Gunter, M.D. Dyar, B. Twamley, F.F. Foit Jr., and S. Cornelius (vol. 88, no. 11-12, pages 1970-1978, 2003). 1580 BOOK REVIEW The Petrographic Microscope. Daniel E. Kile (2003) Supplement to the Mineralogical Record, Publication Number One. 96 pp. The Mineralogical Record, Tucson, AZ. David Vaniman