1096

Protoanthophyllite from three metamorphosed serpentinites
Hiromi Konishi, István Dódony, and Peter R. Buseck

1121

Structural relationships in (Mn_1-xZn_x)Mn₂O₄ (0 ≤ x ≤ 0.26): The “dragging effect” of the tetrahedron on the octahedron
Ferdinando Bosi, Sergio Lucchesi, and Antonio Della Giusta

1154

Infrared and Mössbauer study of Brazilian tourmalines from different geological environments
Ester Figueiredo De Oliveira, Cristiane Castañeda, Sigrid Griet Eeckhout, Messias Menezes Gilmar, Rogério Ribeiro Kwitko, Eddy De Grave, and Nilson Francisquini Botelho

1190

Mechanism of 2/1- to 3/2-mullite transformation at 1650 °C
Martin Schmücker, Bernd Hildmann, and Hartmut Schneider

1207

Far infrared spectra of K⁺ in dioctahedral and trioctahedral mixed-layer minerals
Magali Diaz, Valérie Laperche, James Harsh, and René Prost

1250

Cristobalite inclusions in the Tatahouine achondrite: Implications for shock conditions
Karim Benzerara, François Guyot, Jean Alix Barrat, Philippe Gillet, and Maurice Lesourd

1261

Structural refinements of magnesite at very high pressure
Guillaume Fiquet, François Guyot, Martin Kunz, Jan Matas, Denis Andrault, and Michael Hanfland

1257

Natural occurrence of Fe₂SiO₄ -spinel in the shocked Umbarger L6 chondrite
Zhidong Xie, Naotaka Tomioka, and Thomas G. Sharp

1029

Evidence for magmatic vapor deposition of anhydrite prior to the 1991 climactic eruption of Mount Pinatubo, Philippines
Ryan T. Jakubowski, John Fournelle, Sue Welch, R. J. Swope, and Patrick Camus

1046

Experimental and modeled solubilities of chlorine in aluminosilicate melts, consequences of magma evolution, and implications for exsolution of hydrous chloride melt at Mt. Somma-Vesuvius
James D. Webster and Benedetto De Vivo

1062

Temperature-induced Al-zoning in hornblendes of the Fish Canyon magma, Colorado
Olivier Bachmann and Michael A. Dungan

1077

Analytical techniques for volatiles: A case study using intermediate (andesitic) glasses
P.L. King, T.W. Vennemann, J.R. Holloway, R.L. Hervig, J.B. Lowenstern, and J.F. Forneris

1090

Anomalous optical properties of fibrous tremolite, actinolite, and ferro-actinolite
Jennifer R. Verkouteren and Ann G. Wylie

1104

Synthesis of beryllian sapphirine in the system MgO-BeO-Al₂O₃-SiO₂-H₂O and comparison with naturally occurring beryllian sapphirine and khmaralite. Part 1: Experiments, TEM, and XRD
A.G. Christy, Y. Tabira, A. H??lscher, E.S. Grew, and W. Schreyer

1113

Intersite distribution of Fe²⁺ and Mg in the spinel (sensu stricto)-hercynite series by single-crystal X-ray diffraction
Giovanni B. Andreozzi and Sergio Lucchesi

1128

The grid-work texture of authigenic microcrystalline quartz in siliceous crust-type (SCT) mineralized horizons
Gianfranco Camana, Daniel Chateigner, Michele Zucali, and Gilberto Artioli

1139

The crystal structure of vicanite-(Ce), a borosilicate showing an unusual (Si₃B₃O₁₈)^15- polyanion
Paolo Ballirano, Athos Callegari, Franca Caucia, Adriana Maras, Fiorenzo Mazzi, and Luciano Ungaretti

1144

Submicrometer optical characterization of the grain boundary of optically active Cr³⁺ doped polycrystalline Al₂O₃ by near-field spectroscopy
Yoshihito Narita and Hiroshi Murotani

1148

High-temperature, high-pressure optical spectroscopic study of ferric-iron-bearing tourmaline
Michael N. Taran and George R. Rossman

1164

Isothermal compression of staurolite: A single-crystal study
Paola Comodi, Michela Montagnoli, Pier Francesco Zanazzi, and Tiziana Boffa Ballaran

1172

Equation of state measurements of chlorite, pyrophyllite, and talc
A.R. Pawley, S.M. Clark, and N.J. Chinnery

1183

Structure change of Ca_1-xSr_xTiO₃ perovskite with composition and pressure
Takamitsu Yamanaka, Noriyuki Hirai, and Yutaka Komatsu

1194

High-pressure deformation mechanism in scolecite: A combined computational-experimental study
Pietro Ballone, Simona Quartieri, Alessandra Sani, and Giovanna Vezzalini

1215

Ab initio quantum mechanical modeling of infrared vibrational frequencies of the OH group in dioctahedral phyllosilicates. Part I: Methods, results and comparison to experimental data
Sara Mart??nez-Alonso, James R. Rustad, and Alexander F.H. Goetz

1224

Ab initio quantum mechanical modeling of infrared vibrational frequencies of the OH group in dioctahedral phyllosilicates. Part II: Main physical factors governing the OH vibrations
Sara Mart??nez-Alonso, James R. Rustad, and Alexander F.H. Goetz

1235

On geological interpretations of crystal size distributions: Constant vs. proportionate growth
D.D. Eberl, Daniel E. Kile, and V.A. Drits

1242

Comments on: Higgins: “Closure in crystal size distributions (CSD), verification of CSD calculations, and the significance of CSD fans”
Yucheng Pan

1244

Reply to comment on “Closure in crystal size distributions (CSD), verification of CSD calculations and the significance of CSD fans”
Michael D. Higgins

1245

Allabogdanite, (Fe,Ni)₂P, a new mineral from the Onello meteorite: The occurrence and crystal structure
Sergey N. Britvin, Nikolay S. Rudashevsky, Sergey V. Krivovichev, Peter C. Burns, and Yury S. Polekhovsky

1266

New minerals approved in 2001 by the Commission on New Minerals and Mineral Names International Mineralogical Association
Joel D. Grice and Giovanni Ferraris

1272

BOOK REVIEW: ROCK-FORMING MINERALS VOL. 4A: FRAMEWORK SILICATES: FELDSPARS. W.A. Deer, R.A. Howie, and J. Zussman. London: The Geological Society, 2001, 972pp.
S. A. Morse