1541

Mechanism and kinetics of a mineral transformation under hydrothermal conditions: Calaverite to metallic gold
Jing Zhao, Joël Brugger, Pascal V. Grundler, Fang Xia, Guorong Chen, and Allan Pring

1556

A statistical reassessment of the evidence for the racemic distribution of quartz enantiomorphs
María Támara and Martin R. Preston

1560

On the crystal structure and crystal chemistry of pollucite, (Cs,Na)₁₆Al₁₆Si₃₂O₉₆·nH₂O: A natural microporous material of interest in nuclear technology
G. Diego Gatta, R. Rinaldi, G.J. McIntyre, G. Nénert, F. Bellatreccia, A. Guastoni, and G. Della Ventura

1569

The effect of fluid inclusion size on determination of homogenization temperature and density of liquid-rich aqueous inclusions
András Fall, J. Donald Rimstidt, and Robert J. Bodnar

1580

Effect of SiO₂, total FeO, Fe³⁺/Fe²⁺, and alkali elements in basaltic glasses on mid-infrared spectra
Céleste D.M. Dufresne, Penelope L. King, M. Darby Dyar, and Kim N. Dalby

1596

The high-pressure–high-temperature behavior of bassanite
Paola Comodi, Sabrina Nazzareni, Leonid Dubrovinsky, and Marco Merlini

1620

Thermodynamic and crystallographic properties of kornelite [Fe₂(SO₄)₃·~7.75H₂O] and paracoquimbite [Fe₂(SO₄)₃·9H₂O]
Sonia Ackermann, Biljana Lazic, Thomas Armbruster, Stephen Doyle, Klaus-Dieter Grevel, and Juraj Majzlan

1647

Optical spectroscopic study of tetrahedrally coordinated Co²⁺ in natural spinel and staurolite at different temperatures and pressures
Michail N. Taran, Monika Koch-Müller, and Anne Feenstra

1679

Sideronatrite, Na₂Fe(SO₄)₂(OH)·3H₂O: Crystal structure of the orthorhombic polytype and OD character analysis
Fernando Scordari and Gennaro Ventruti

1687

Anharmonic OH vibrations in brucite: Small pressure-induced redshift in the range 0–22 GPa
Pavlin D. Mitev, Grzegorz Gajewski, and Kersti Hermansson

1707

Mechanism of wollastonite carbonation deduced from micro- to nanometer length scale observations
Damien Daval, Isabelle Martinez, Jean-Michel Guigner, Roland Hellmann, Jérôme Corvisier, Nathaniel Findling, Christian Dominici, Bruno Goffé, and François Guyot

1743

BOOK REVIEW: PHOTOATLAS OF INCLUSIONS IN GEMSTONES, Vol. 3, by Eduard J. Gübelin and John I. Koivula (2008). Opinio-Verlag, Basel, Switzerland, 672 p. ISBN 978-3-03999-047-4.
George E. Harlow

1727

Crystal structure of argentopyrite, AgFe₂S₃, and its relationship with cubanite
Hexiong Yang, William W. Pinch, and Robert T. Downs

1731

Magnetite-free, yellow lizardite serpentinization of olivine websterite, Canyon Mountain complex, N.E. Oregon
Bernard W. Evans, Scott M. Kuehner, and Anastasia Chopelas

1735

The influence of atomic size and charge of dissolved species on the diffusivity and viscosity of silicate melts
Liqun Zhang, James A. Van Orman, and Daniel J. Lacks

1739

Si-Al distribution in high-pressure CaAl₄Si₂O₁₁ phase: A ²⁹Si and ²⁷Al NMR study
Xianyu Xue, Shuangmeng Zhai, and Masami Kanzaki

1505

Microbe-clay mineral interactions
Hailiang Dong, Deb P. Jaisi, Jinwook Kim, and Gengxin Zhang

1520

Chemical substitutions, paragenetic relations, and physical conditions of formation of h??gbomite in the Sittampundi layered anorthosite complex, South India
Pulak Sengupta, Uttam K. Bhui, Ingo Braun, Upama Dutta, and D. Mukhopadhyay

1535

Miguelromeroite, the Mn analogue of sainfeldite, and redefinition of villyaellenite as an ordered intermediate in the sainfeldite-miguelromeroite series
Anthony R. Kampf

1591

Influence of cation size on the low-temperature heat capacity of alkaline earth metasilicate glasses
Pascal Richet, Atsusi Nidaira, Daniel R. Neuville, and Tooru Atake

1603

Geochemistry of reversible hydratable tephra from the Trans Mexican Volcanic Belt
Liberto De Pablo, Mercedes Doval, and Angel La Iglesia

1616

Physical contradictions and remedies using simple polythermal equations of state
George Helffrich and J.A.D. Connolly

1629

Humidity-induced phase transitions of ferric sulfate minerals studied by in situ and ex situ X-ray diffraction
Wenqian Xu, Nicholas J. Tosca, Scott M. McLennan, and John B. Parise

1638

In situ Raman spectroscopy of MgSiO₃ enstatite up to 1550 K
Rachel Zucker and Sang-Heon Shim

1653

New insights into smectite illitization: A zoned K-bentonite revisited
Douglas K. McCarty, Boris A. Sakharov, and Victor A. Drits

1672

The hydrothermal conversion of kaolinite to kalsilite: Influence of time, temperature, and pH
Ana Isabel Becerro, Alberto Escudero, and Marco Mantovani

1698

Structural properties of biologically controlled hydrozincite: An HRTEM and NMR spectroscopic study
Giovanni De Giudici, Francesca Podda, Roberta Sanna, Elodia Musu, Riccardo Tombolini, Carla Cannas, Anna Musinu, and Mariano Casu