385

Some mineral physics constraints on the rheology and geothermal structure of Earth’s lower mantle
Daisuke Yamazaki and Shun-ichiro Karato

392

Biodurability of talc
Joseph B. Jurinski and J. Donald Rimstidt

400

Microbial biomineralization in weathered volcanic ash deposit and formation of biogenic minerals by experimental incubation
Motoharu Kawano and Katsutoshi Tomita

411

In situ atomic force microscopy study of hectorite and nontronite dissolution: Implications for phyllosilicate edge surface structures and dissolution mechanisms
Barry R. Bickmore, Dirk Bosbach, Michael F. Hochella Jr., Laurent Charlet, and Eric Rufe

424

Na- and Cs-exchange in a clinoptilolite-rich rock: Analysis of the outgoing cations in solution
Ryean-Marie Woods and Mickey E. Gunter

431

The effects of time, temperature, and concentration on Sr²⁺ exchange in clinoptilolite in aqueous solutions
Jennifer L. Palmer and Mickey E. Gunter

438

Thermodynamics of ion-exchanged and natural clinoptilolite
Sanyuan Yang, Alexandra Navrotsky, and Rick Wilkin

448

Thermochemical study of calcium zeolites-heulandite and stilbite
I. Kiseleva, A. Navrotsky, I. Belitsky, and B. Fursenko

456

Fe³⁺/∑Fe vs. FeLα peak energy for minerals and glasses: Recent advances with the electron microprobe
Michel Fialin, Christiane Wagner, Nicole Métrich, Eric Humler, Laurence Galoisy, and Antoine Bézos

466

Fibrous nanoinclusions in massive rose quartz: The origin of rose coloration
Julia S. Goreva, Chi Ma, and George R. Rossman

473

Cathodoluminescence study of apatite crystals
Jocelyn Barbarand and Maurice Pagel

485

Hydrogen in spessartine-almandine garnets as a tracer of granitic pegmatite evolution
Elizabeth H. Arredondo, George R. Rossman, and Gregory R. Lumpkin

491

Ab initio studies of possible fluorine-bearing four- and fivefold coordinated Al species in aluminosilicate glasses
Yun Liu and Hanna Nekvasil

498

The nature of radiohaloes in biotite: Experimental studies and modeling
Lutz Nasdala, Marita Wenzel, Michael Andrut, Richard Wirth, and Peter Blaum

513

Boron metasomatism of the Alta stock contact aureole, Utah: Evidence from borates, mineral chemistry, and geochemistry
Darrell T. Woodford, Virginia B. Sisson, and William P. Leeman

534

Low P- T Caledonian resetting of U-rich Paleoproterozoic zircons, central Sweden
Karin H??gdahl, L. Peter Gromet, and Curt Broman

547

Graphical analysis of the orthopyroxene-pigeonite-augite-plagioclase equilibrium at liquidus temperatures and low pressure
Rais M. Latypov, Michail I. Dubrovskii, and Tuomo T. Alapieti

555

Synthesis and characterization of white micas in the join muscovite—aluminoceladonite
Max W. Schmidt, Mattia Dugnani, and Gilberto Artioli

566

Displacive components of the low-temperature phase transitions in lawsonite
Hinrich-Wilhelm Meyer, Stefan Marion, Peter Sondergeld, Michael A. Carpenter, Kevin S. Knight, Simon A.T. Redfern, and Martin T. Dove

578

Radiographic study on the viscosity of the Fe-FeS melts at the pressure of 5 to 7 Gpa
Satoru Urakawa, Hidenori Terasaki, Kenichi Funakoshi, Takumi Kato, and Akio Suzuki

583

Comments on: Strunz and Nickel: “Pseudosinhalite is a structural isotype of chondrodite”
Peter Daniels and Werner Schreyer

585

BOOK REVIEW:URANIUM: MINERALOGY, GEOCHEMISTRY AND THE ENVIRONMENT. Peter C. Burns and Robert Finch, Editors, Reviews in Mineralogy, 1999, Vol. 38, 679 p. Mineralogical Society of America
Donald Langmuir

588

ERRATUM: The crystal structure of tetranatrolite from Mont Saint Hilaire, Quebec, and its chemical and structural relationship to paranatrolite and gonnardite by H.T. Evans Jr., J.A. Konnert, and M. Ross (v. 85, 1808-1815, 2000)
Joel D. Grice

588

ERRATUM: Gonnardite: Re-examination of holotype material and the discrediation of tetranatrolite by G. Artioli and E. Galli (v.84, 1445-1450, 1999)
Joel D. Grice

588

ERRATUM: The effect of anhydrous composition on water solubility in granitic melts, by Harald Behrens and Nicole Jantos (v. 86, p. 14-20, 2001)
Harald Behrens and Nicole Jantos