1

Shedding light on bone material
John M. Hughes

2

Weddellite from renal stones: Structure refinement and dependence of crystal chemical features on H2O content
Alina Izatulina, Vladislav Gurzhiy and 
Olga Frank-Kamenetskaya

8

Erionite and offretite from the Killdeer Mountains, Dunn County, North Dakota, U.S.A.
Bernhardt Saini-Eidukat and Jason W. Triplett

16

Molecular water in nominally unhydrated carbonated hydroxylapatite: The key to a better understanding of bone mineral
Jill Dill Pasteris, Claude H. Yoder and Brigitte Wopenka

28

Precipitation and dissolution of chromite by hydrothermal solutions in the Oman ophiolite: New behavior of Cr and chromite
Shoji Arai and Norikatsu Akizawa

35

Phase transitions and equation of state of forsterite to 90 GPa from single-crystal X-ray diffraction and molecular modeling
Gregory J. Finkelstein, Przemyslaw K. Dera, Sandro Jahn, Artem R. Oganov, Christopher M. Holl, Yue Meng and Thomas S. Duffy

44

Weathering of cobalt arsenides: Natural assemblages and calculated stability relations among secondary Ca-Mg-Co arsenates and carbonates
Gregor Markl, Michael A.W. Marks, Insa Derrey and Jan-Erik Gühring

57

Alburnite, Ag₈GeTe₂S₄, a new mineral species from the RoÅŸia Montana Au-Ag epithermal deposit, Apuseni Mountains, Romania
Călin G. Tămaş, Bernard Grobety, Laurent Bailly, Heinz-Juergen Bernhardt and Adrian Minuţ

65

Cathodoluminescence of alkali feldspars and radiation effects on the luminescent properties
Masahiro Kayama, Hirotsugu Nishido, Shin Toyoda, Kosei Komuro, Adrian A. Finch, Martin R. Lee and Kiyotaka Ninagawa

76

Thermochemistry of the alkali feldspars: Calorimetric study of the entropy relations in the low albite–low microcline series
Artur Benisek, Edgar Dachs and Herbert Kroll

84

Thermal equation of state and spin transition of magnesiosiderite at high pressure and temperature
Jin Liu, Jung-Fu Lin, Zhu Mao and Vitali B. Prakapenka

94

Thermal diffusivities of MgSiO₃ and Al-bearing MgSiO₃ perovskites
Kenji Ohta, Takashi Yagi and Kei Hirose

98

The sound velocity measurements of Fe₃S
Seiji Kamada, Eiji Ohtani, Hiroshi Fukui, Takeshi Sakai, Hidenori Terasaki, Suguru Takahashi, Yuki Shibazaki, 
Satoshi Tsutsui, Alfred Q.R. Baron, Naohisa Hirao and 
Yasuo Ohishi

102

PDF analysis of ferrihydrite: Critical assessment of the under-constrained akdalaite model
Alain Manceau, S. Skanthakumar and L. Soderholm

109

Aluminum ion occupancy in the structure of synthetic saponites: Effect on crystallinity
Hongping He, Tian Li, Qi Tao, Tianhu Chen, Dan Zhang, Jianxi Zhu, Peng Yuan and Runliang Zhu

117

DFT investigation of structural and vibrational properties of type B and mixed A-B carbonated hydroxylapatite
Gianfranco Ulian, Giovanni Valdr, Marta Corno and Piero Ugliengo

128

Chlorite topography and dissolution of the interlayer studied with atomic force microscopy
Salvatore A. Gazzè, Andrew G. Stack, K. Vala Ragnarsdottir and Terence J. McMaster

139

The effect of XPS background removing method on the appraisal of Ti and Fe: The case of phlogopites and brookite
Maria R. Guascito, Ernesto Mesto, Cosimino Malitesta, Rosaria A. Picca and Fernando Scordari

149

Measurement of water contents in olivine using Raman spectroscopy
Nathalie Bolfan-Casanova, Gilles Montagnac and Bruno Reynard

157

Perb¿eite-(Ce) and alnaperb¿eite-(Ce), two new members of the epidote-tšrnebohmite polysomatic series: Chemistry, structure, dehydrogenation, and clue for a sodian epidote end-member
Paola Bonazzi, Giovanni O. Lepore, Luca Bindi, Christian Chopin, Tomas A. Husdal and Olaf Medenbach

170

Crystal structure and compressibility of lead dioxide up to 140 GPa
Brent Grocholski, Sang-Heon Shim, Elizabeth Cottrell and Vitali B. Prakapenka

178

A comparative analysis of the mechanical behavior of carbon dioxide and methane hydrate-bearing sediments
Masayuki Hyodo, Yanghui Li, Jun Yoneda, 
Yukio Nakata, Norimasa Yoshimoto, Shintaro Kajiyama, 
Akira Nishimura and Yongchen Song

184

Crystal structures and stabilities of cristobalite-helium phases at high pressures
Masanori Matsui, Tomoko Sato and Nobumasa Funamori

190

X-ray absorption characterization of Cr in forsterite within the MacAlpine Hills 88136 EL3 chondritic meteorite
David A. McKeown, Andrew C. Buechele, Ryan Tappero, Timothy J. McCoy and Kathryn G. Gardner-Vandy

198

Monipite, MoNiP, a new phosphide mineral in a Ca-Al-rich inclusion from the Allende meteorite
Chi Ma, John R. Beckett and George R. Rossman

206

Compositional zoning in dolomite from lawsonite-bearing eclogite (SW Tianshan, China): Evidence for prograde metamorphism during subduction of oceanic crust
Ji-Lei Li, Reiner Klemd, Jun Gao and Melanie Meyer

218

Vanadio-oxy-dravite, NaV3(Al4Mg2)(Si6O18)(BO3)3(OH)3O, a new mineral species of the
Ferdinando Bosi, Henrik Skogby, Leonid Reznitskii and Ulf HŒlenius

225

XAS evidence for Ni sequestration by siderite in a lateritic Ni-deposit from New Caledonia
Gabrielle Dublet, Farid Juillot, Guillaume Morin, Emmanuel Fritsch, Vincent Noel, Jessica Brest and Gordon E. Brown Jr.

235

Vladykinite, Na3Sr4(Fe2+Fe3+)Si8O24: A new complex sheet silicate from peralkaline rocks of the Murun complex, eastern Siberia, Russia
Anton R. Chakhmouradian, Mark A. Cooper, Neil Ball, Ekaterina P. Reguir, Luca Medici, Yassir A. Abdu and Anton A. Antonov

242

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

248

Memorial of James Burleigh Thompson, Jr., 1921–2011
Charles W. Burnham, Stein B. Jacobsen, Ulrich Petersen and M.R. Van Baalen

250

MANTLE CONVECTION FOR GEOLOGISTS
Masaki Ogawa

251

Errata: Petrogenesis of the Kulyk Lake monazite-apatite-Fe(Ti)-oxide occurrence revealed using in-situ LA-(MC)-ICP-MS trace element mapping, U-Pb dating, and Sm-Nd isotope systematics on monazite
Christopher R.M. McFarlane and Michelle McKeough

251

Errata: WinPyrox: A Windows program for pyroxene calculation classification and thermobarometry
Fuat Yavuz

2

Weddellite from renal stones: Structure refinement and dependence of crystal chemical features on H2O content
Alina Izatulina, Vladislav Gurzhiy and 
Olga Frank-Kamenetskaya

8

Erionite and offretite from the Killdeer Mountains, Dunn County, North Dakota, U.S.A.
Bernhardt Saini-Eidukat and Jason W. Triplett

35

Phase transitions and equation of state of forsterite to 90 GPa from single-crystal X-ray diffraction and molecular modeling
Gregory J. Finkelstein, Przemyslaw K. Dera, Sandro Jahn, Artem R. Oganov, Christopher M. Holl, Yue Meng and Thomas S. Duffy

44

Weathering of cobalt arsenides: Natural assemblages and calculated stability relations among secondary Ca-Mg-Co arsenates and carbonates
Gregor Markl, Michael A.W. Marks, Insa Derrey and Jan-Erik Gühring

76

Thermochemistry of the alkali feldspars: Calorimetric study of the entropy relations in the low albite–low microcline series
Artur Benisek, Edgar Dachs and Herbert Kroll

102

PDF analysis of ferrihydrite: Critical assessment of the under-constrained akdalaite model
Alain Manceau, S. Skanthakumar and L. Soderholm

117

DFT investigation of structural and vibrational properties of type B and mixed A-B carbonated hydroxylapatite
Gianfranco Ulian, Giovanni Valdr, Marta Corno and Piero Ugliengo

157

Perb¿eite-(Ce) and alnaperb¿eite-(Ce), two new members of the epidote-tšrnebohmite polysomatic series: Chemistry, structure, dehydrogenation, and clue for a sodian epidote end-member
Paola Bonazzi, Giovanni O. Lepore, Luca Bindi, Christian Chopin, Tomas A. Husdal and Olaf Medenbach

218

Vanadio-oxy-dravite, NaV3(Al4Mg2)(Si6O18)(BO3)3(OH)3O, a new mineral species of the
Ferdinando Bosi, Henrik Skogby, Leonid Reznitskii and Ulf HŒlenius

225

XAS evidence for Ni sequestration by siderite in a lateritic Ni-deposit from New Caledonia
Gabrielle Dublet, Farid Juillot, Guillaume Morin, Emmanuel Fritsch, Vincent Noel, Jessica Brest and Gordon E. Brown Jr.

235

Vladykinite, Na3Sr4(Fe2+Fe3+)Si8O24: A new complex sheet silicate from peralkaline rocks of the Murun complex, eastern Siberia, Russia
Anton R. Chakhmouradian, Mark A. Cooper, Neil Ball, Ekaterina P. Reguir, Luca Medici, Yassir A. Abdu and Anton A. Antonov