American Mineralogist, 2002, V 87, N 5-6, May-June.

LETTERS

769 
Isotopic and elemental partitioning of boron between hydrous fluid and silicate 
melt
Richard L. Hervig, Gordon M. Moore, Lynda B. Williams, Simon M. Peacock,
John R. Holloway, and Kurt Roggensack

775 
Experimental evidence of three coexisting immiscible fluids in synthetic 
granitic pegmatite
Ilya V. Veksler, Rainer Thomas, and Christian Schmidt

780 
Quantifying surface areas of clays by atomic force microscopy
Barry R. Bickmore, Kathryn L. Nagy, Paul E. Sandlin, and Terry S. Crater

784 
A new high-pressure phase of FeSi
David P. Dobson, Lidunka Vocadlo, and Ian G. Wood


ARTICLES

593 
Formation of secondary pyrite and carbonate minerals in the Lower Williams 
Lake tailings basin, Elliot Lake, Ontario, Canada
A. Dogan Paktunc and Nand K. Dave'

603 
Hydroxyl in MgSiO3 akimotoite: A polarized and high-pressure IR study
Nathalie Bolfan-Casanova, Hans Keppler, and David C. Rubie

609 
High-pressure IR-spectra and the thermodynamic properties of chloritoid
Monika Koch-Mu"ller, Anne M. Hofmeister, Yingwei Fei, and Zhenxian Liu

623 
Infrared and Raman study of interlayer anions CO32-, NO3-, SO42- and ClO4- in 
Mg/Al-hydrotalcite
J. Theo Kloprogge, David Wharton, Leisel Hickey, and Ray L. Frost

630 
Effect of Fe oxidation state on the IR spectra of Garfield nontronite
Claire-Isabelle Fialips, Dongfang Huo, Laibin Yan, Jun Wu, and Joseph W. Stucki

642 
High-pressure single-crystal X-ray diffraction study of katoite hydrogarnet: 
Evidence for a phase transition from Ia3d to I-43d symmetry at 5 GPa
George A. Lager, Robert T. Downs, Marcus Origlieri, and Rebecca Garoutte

648 
The high-temperature P21/c-C2/c phase transition in Fe-free pyroxene 
(Ca0.15Mg1.85Si2O6): Structural and thermodynamic behavior
Mario Tribaudino, Fabrizio Nestola, Fernando Ca'mara, and Maria Chiara Domeneghetti

Deposit Item
658
Thermodynamics and stability of pseudobrookite-type MgTi2O5 (karrooite)
Dimitrios Xirouchakis, Alexander Smirnov, Kelly Woody, Donald H. Lindsley,
and David J. Andersen

668 
Molecular orbital calculations on aluminosilicate tricluster molecules: 
Implications for the structure of aluminosilicate glasses
J.D. Kubicki and M.J. Toplis

679 
Surface structures, stabilities and growth of magnesian calcites: A 
computational investigation from the perspective of dolomite formation
Nora H. De Leeuw

690 
Spinels and other oxides in Mn-rich rocks from the Hutter Mine, Pittsylvania 
County, Virginia, U.S.A.: Implications for miscibility and solvus relations 
among jacobsite, galaxite, and magnetite
James S. Beard and Robert J. Tracy

699 
An occurrence of igneous orthorhombic amphibole, Eriksberg gabbro, southern 
Sweden
Dick T. Claeson and William P. Meurer

709 
Crystal chemistry of Cr3+-V3+-rich clinopyroxenes
L. Secco, F. Martignago, A. Dal Negro, L.Z. Reznitskii, and E.V. Sklyarov

Deposit Item
715 The crystal structures of cesanite and its synthetic analogue - A comparison
A. Piotrowski, V. Kahlenberg, R.X. Fischer, Y. Lee, and J.B. Parise

721 
Disordered distribution of Cu in the crystal structure of leightonite, K2Ca2Cu(SO4)4 . 2H2O
Silvio Menchetti, Luca Bindi, Paola Bonazzi, and Filippo Olmi

Deposit Item
726 Neusta"dtelite and cobaltneusta"dtelite, the Fe3+- and Co2+-analogues of 
medenbachite
Werner Krause, Heinz-Ju"rgen Bernhardt, Catherine McCammon, and Herta Effenberger

739 
Ciprianiite and mottanaite-(Ce), two new minerals of the hellandite group from 
Latium (Italy)
Giancarlo Della Ventura, Paola Bonazzi, Roberta Oberti, and Luisa Ottolini

Deposit Item
745 
Re-definition, nomenclature and crystal-chemistry of the hellandite group
Roberta Oberti, Giancarlo Della Ventura, Luisa Ottolini, Frank C. Hawthorne, and 
Paola Bonazzi

753 
The new mineral baumstarkite and a structural reinvestigation of aramayoite and 
miargyrite
Herta Effenberger, Werner Hermann Paar, Dan Topa, Alan J. Criddle, and Michel Fleck

765 
New Mineral Names
John L. Jambor and Andrew C. Roberts

PRESENTATION OF AWARDS FOR 2001

788 
Presentation of the Roebling Medal of the Mineralogical Society of America for 
2001 to Peter John Wyllie
Art Montana

790 
Acceptance of the Roebling Medal of the Mineralogical Society of America for 2001
Peter J. Wyllie

794 
Presentation of the Mineralogical Society of America Award for 2001 to Peter Burns
Frank C. Hawthorne

795 
Acceptance of the Mineralogical Society of America Award for 2001
Peter C. Burns

796 
Presentation of the Distinguished Public Service Award of the Mineralogical 
Society of America for 2001 to Jeffery Post
Peter Heaney

798 
Acceptance of the Mineralogical Society of America's Public Service Medal for 2001
Jeffrey Post

799 
Presentation of the Mineralogical Society of America Dana Medal for 2001 to George R. Rossman
Paul Asimow

801 
Acceptance of the Dana Medal of the Mineralogical Society of America for 2001
George R. Rossman

803 
BOOK REVIEW
Dexter Perkins
EARTH'S MATERIALS: MINERALS AND ROCKS. By Gautam Sen, Prentice-Hall, Inc. New 
Jersey, 2001, 542 p.