539

Synthesis of K-dominant tourmaline
Eleanor Berryman, Bernd Wunder and Dieter Rhede

543

Subsolidus isothermal fractional crystallization
David London

547

Merwinite in diamond from São Luiz, Brazil: A new mineral of the Ca-rich mantle environment
Dmitriy A. Zedgenizov, Anton Shatskiy, Alexey L. Ragozin, Hiroyuki Kagi and Vladislav S. Shatsky

253

Entrapping CO₂, while recovering methane
Jong-Won Jung

255

Static positional disorder in ulvšspinel: A single-crystal neutron diffraction study
G. Diego Gatta, Ferdinando Bosi, Garry J. McIntyre and Ulf HŒlenius

261

Color of Mn-bearing gahnite: A first example of electronic transitions in heterovalent exchange coupledÊIVMn2+-VIMn3+Êpairs in mineral
Ulf HŒlenius and Ferdinando Bosi

267

Low intra-crystalline closure temperatures of Cr-bearing spinels from the mantle xenoliths of the Middle Atlas Neogene-Quaternary Volcanic Field (Morocco): Mineralogical evidence of a cooler mantle beneath the West African Craton
Davide Lenaz, Nasrrddine Youbi, Angelo De Min, Moulay Ahmed Boumehdi and Mohamed Ben Abbou

276

Crystal structure of lead uranyl carbonate mineral widenmannite: Precession electron-diffraction and synchrotron powder-diffraction study
Jakub Pl‡_il, Luk‡_ Palatinus, Jan Rohl’_ek, _Lenka Houdkov‡, Mariana Klementov‡, Viktor Goli‡_ and Pavel _k‡cha

283

Sulfate-bearing deposits at Dalangtan Playa and their implication for the formation and preservation of martian salts
W.G. Kong, M.P. Zheng, F.J. Kong and W.X. Chen

291

Alteration of Hawaiian basalts under sulfur-rich conditions: Applications to understanding surface-atmosphere interactions on Mars and Venus
Molly C. McCanta, M. Darby Dyar and Allan H. Treiman

303

Scheelite elemental and isotopic signatures: Implications for the genesis of skarn-type W-Mo deposits in the Chizhou Area, Anhui Province, Eastern China
Guoxue Song, Kezhang Qin, Guangming Li, 
Noreen J. Evans and Lei Chen

318

Structural and dynamical relationships of Ca²⁺ and H₂O in smectite/²H₂O systems
Geoffrey M. Bowers, Jared W. Singer, David L. Bish and 
R. James Kirkpatrick

332

Fluorescence of trivalent neodymium in various materials excited by a 785 nm laser
Hongmei Chen and Richard W. Stimets

343

Experimental study of the formation of chalcopyrite and bornite via the sulfidation of hematite: Mineral replacements with a large volume increase
Jing Zhao, Joël Brugger, Guorong Chen, Yung Ngothai and Allan Pring

355

Magma chamber dynamics recorded by oscillatory zoning in pyroxene and olivine phenocrysts in basaltic lunar meteorite Northwest Africa 032
Stephen M. Elardo and Charles K. Shearer Jr.

369

Solid solution in the fluorapatite-chlorapatite binary system: High-precision crystal structure refinements of synthetic F-Cl apatite
John M. Hughes, Hanna Nekvasil, Gokce Ustunisik, Donald H. Lindsley, Aron E. Coraor, John Vaughn, Brian L. Phillips, Francis M. McCubbin and William R. Woerner

377

Surface-specific measurements of olivine dissolution by phase-shift interferometry
Helen E. King, Hisao Satoh, Katsuo Tsukamoto and Andrew Putnis

387

Ab initio computation on the Fe L-edge X-ray emission spectroscopy of Fe-bearing MgSiO₃ perovskite
Xianlong Wang and Taku Tsuchiya

393

The two aluminum sites in theÊ27Al MAS NMR spectrum of kaolinite: Accurate determination of isotropic chemical shifts and quadrupolar interaction parametersr
Micha‘l Paris

401

Interaction of methane hydrate complexes with smectites: Experimental results compared to molecular models
Rubén Martos-Villa, Stephen Guggenheim, M. Pilar Mata, C. Ignacio Sainz-Díaz and Fernando Nieto

415

Spin and valence states of iron in Al-bearing silicate glass at high pressures studied by synchrotron Mössbauer and X-ray emission spectroscopy
Zhu Mao, Jung-Fu Lin, Jing Yang, Junjie Wu, 
Heather C. Watson, Yuming Xiao, Paul Chow and 
Jiyong Zhao

424

The role of magmatic and hydrothermal processes in the evolution of Be-bearing pegmatites: Evidence from beryl and its breakdown products
Sabina Strmić Palinkaš, Reinhard Wegner, Andrea Čobić, Ladislav A. Palinkaš, Sandra De Brito Barreto, 
Tamás Váczi and Vladimir Bermanec

433

Evaluation of residual pressure in an inclusion-host system using negative frequency shift of quartz Raman spectra
Yui Kouketsu, Tadao Nishiyama, Takeshi Ikeda and Masaki Enami

443

Variation in XANES in biotite as a function of orientation, crystal composition, and metamorphic history
Katy A. Evans, M. Darby Dyar, Steven M. Reddy, 
Antonio Lanzirotti, David T. Adams and Nick Tailby

458

Tetrahedral ferric iron in oxidized hydrous wadsleyite
Joseph R. Smyth, Nathalie Bolfan-Casanova, Daniel Avignant, Malika El-Ghozzi and Sarah M. Hirner

467

Visible to near-infrared optical properties of pure synthetic olivine across the olivine solid solution
Peter J. Isaacson, Rachel L. Klima, Jessica M. Sunshine, Leah C. Cheek, Carle M. Pieters, Takahiro Hiroi, M. Darby Dyar, Melissa Lane and Janice Bishop

479

Cordierite under hydrostatic compression: Anomalous elastic behavior as a precursor for a pressure-induced phase transition
Ronald Miletich, G. Diego Gatta, Thomas Willi, Peter W. Mirwald, Paolo Lotti, Marco Merlini, Nicola Rotiroti and Thomas Loerting

494

Strontiohurlbutite, SrBe2(PO4)2, a new mineral from Nanping No. 31 pegmatite, Fujian Province, Southeastern ChinaÊ
Can Rao, Rucheng Wang, FrŽdŽric Hatert, Xiangping Gu, Luisa Ottolini, Huan Hu, Chuanwan Dong, Fabrice Dal Bo and Maxime Baijot

500

The Bi sulfates from the Alfenza Mine, Crodo, Italy: An automatic electron diffraction tomography (ADT) study
Gian Carlo Capitani, Enrico Mugnaioli, Jordi Rius,Paolo Gentile, Tiziano Catelani, Andrea Lucotti and Ute Kolb

511

The high-pressure behavior of bloedite: A synchrotron single-crystal X-ray diffraction study
Paola Comodi, Sabrina Nazzareni, Tonci Bali_-_uni_, _Azzurra Zucchini and Michael Hanfland

519

Ghiaraite: A new mineral from Vesuvius volcano, Naples (Italy)
Manuela Rossi, Fabrizio Nestola, Federico Zorzi, 
Arianna Lanza, Luca Peruzzo, Alessandro Guastoni and Anatoly Kasatkin

525

Lavinskyite, K(LiCu)Cu6(Si4O11)2(OH)4, isotypic with plancheite, a new mineral from the Wessels mine, Kalahari Manganese Fields, South AfricaÊ
Hexiong Yang, Robert T. Downs, Stanley H. Evans and William W. Pinch

531

Transformation of graphite to diamond via a topotactic mechanism
Laurence A.J. Garvie, Péter Németh and Peter R. Buseck

551

New mineral names
Fernando Cámara, G. Diego Gatta and Dmitriy Belakovskiy

556

EARTH MATERIALS: Introduction to Mineralogy and Petrology
Jo Laird

557

ADDENDUM
S.A. Morse and J. Allaz

559

American Mineralogist thanks the year 2013 reviewers

255

Static positional disorder in ulvšspinel: A single-crystal neutron diffraction study
G. Diego Gatta, Ferdinando Bosi, Garry J. McIntyre and Ulf HŒlenius

261

Color of Mn-bearing gahnite: A first example of electronic transitions in heterovalent exchange coupledÊIVMn2+-VIMn3+Êpairs in mineral
Ulf HŒlenius and Ferdinando Bosi

267

Low intra-crystalline closure temperatures of Cr-bearing spinels from the mantle xenoliths of the Middle Atlas Neogene-Quaternary Volcanic Field (Morocco): Mineralogical evidence of a cooler mantle beneath the West African Craton
Davide Lenaz, Nasrrddine Youbi, Angelo De Min, Moulay Ahmed Boumehdi and Mohamed Ben Abbou

276

Crystal structure of lead uranyl carbonate mineral widenmannite: Precession electron-diffraction and synchrotron powder-diffraction study
Jakub Pl‡_il, Luk‡_ Palatinus, Jan Rohl’_ek, _Lenka Houdkov‡, Mariana Klementov‡, Viktor Goli‡_ and Pavel _k‡cha

355

Magma chamber dynamics recorded by oscillatory zoning in pyroxene and olivine phenocrysts in basaltic lunar meteorite Northwest Africa 032
Stephen M. Elardo and Charles K. Shearer Jr.

369

Solid solution in the fluorapatite-chlorapatite binary system: High-precision crystal structure refinements of synthetic F-Cl apatite
John M. Hughes, Hanna Nekvasil, Gokce Ustunisik, Donald H. Lindsley, Aron E. Coraor, John Vaughn, Brian L. Phillips, Francis M. McCubbin and William R. Woerner

377

Surface-specific measurements of olivine dissolution by phase-shift interferometry
Helen E. King, Hisao Satoh, Katsuo Tsukamoto and Andrew Putnis

393

The two aluminum sites in theÊ27Al MAS NMR spectrum of kaolinite: Accurate determination of isotropic chemical shifts and quadrupolar interaction parametersr
Micha‘l Paris

433

Evaluation of residual pressure in an inclusion-host system using negative frequency shift of quartz Raman spectra
Yui Kouketsu, Tadao Nishiyama, Takeshi Ikeda and Masaki Enami

458

Tetrahedral ferric iron in oxidized hydrous wadsleyite
Joseph R. Smyth, Nathalie Bolfan-Casanova, Daniel Avignant, Malika El-Ghozzi and Sarah M. Hirner

467

Visible to near-infrared optical properties of pure synthetic olivine across the olivine solid solution
Peter J. Isaacson, Rachel L. Klima, Jessica M. Sunshine, Leah C. Cheek, Carle M. Pieters, Takahiro Hiroi, M. Darby Dyar, Melissa Lane and Janice Bishop

479

Cordierite under hydrostatic compression: Anomalous elastic behavior as a precursor for a pressure-induced phase transition
Ronald Miletich, G. Diego Gatta, Thomas Willi, Peter W. Mirwald, Paolo Lotti, Marco Merlini, Nicola Rotiroti and Thomas Loerting

494

Strontiohurlbutite, SrBe2(PO4)2, a new mineral from Nanping No. 31 pegmatite, Fujian Province, Southeastern ChinaÊ
Can Rao, Rucheng Wang, FrŽdŽric Hatert, Xiangping Gu, Luisa Ottolini, Huan Hu, Chuanwan Dong, Fabrice Dal Bo and Maxime Baijot

500

The Bi sulfates from the Alfenza Mine, Crodo, Italy: An automatic electron diffraction tomography (ADT) study
Gian Carlo Capitani, Enrico Mugnaioli, Jordi Rius,Paolo Gentile, Tiziano Catelani, Andrea Lucotti and Ute Kolb

511

The high-pressure behavior of bloedite: A synchrotron single-crystal X-ray diffraction study
Paola Comodi, Sabrina Nazzareni, Tonci Bali_-_uni_, _Azzurra Zucchini and Michael Hanfland

525

Lavinskyite, K(LiCu)Cu6(Si4O11)2(OH)4, isotypic with plancheite, a new mineral from the Wessels mine, Kalahari Manganese Fields, South AfricaÊ
Hexiong Yang, Robert T. Downs, Stanley H. Evans and William W. Pinch