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The information in these preprints is subject to change. These preprints are unedited manuscripts accepted for publication that will undergo copyediting, layout, and review of the proof before being published. Always consult the final, published document. All legal disclaimers that apply to the journal apply to these preprints.

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Please cite these papers: Authors (year) title. American Mineralogist, in press. DOI


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Going small: nanoscale geochronology using atom probe tomography Stephen W. Parman preprint

The speciation of carbon monoxide in silicate melts and glasses Takahiro Yoshioka, Catherine Mccammon, Svyatoslav Shcheka, and Hans Keppler preprint

Degassing pathways of Cl-, F-, H-, and S-bearing magmas near the lunar surface: Implications for the composition and Cl isotopic values of lunar apatite Gokce Ustunisik, Hanna Nekvasil, Donald H. Lindsley, and Francis M. McCubbin preprint

Formation of rhyolite at the Okataina Volcanic Complex, New Zealand: New insights from analysis of quartz clusters in plutonic lithics Karina A. Graeter, Rachel J. Beane, Chad D. Deering, Darren Gravley, and Olivier Bachmann preprint

Experimental investigation of F, Cl, and OH partitioning between apatite and Fe-rich basaltic melt at 1.0-1.2 GPa and 950-1000 °C Francis M. McCubbin, Kathleen E. Vander Kaaden, Romain Tartèse, Jeremy W. Boyce, Sami Mikhail, Eric S. Whitson, Aaron S. Bell, Mahesh Anand, Ian A. Franchi, Jianhua Wang, and Erik H. Hauri preprint

Structural and chemical characterization of Mg[(Cr,Mg)(Si,Mg)]O4, a new post-spinel phase with six-fold coordinated silicon Luca Bindi, Ekaterina A. Sirotkina, Andrey V. Bobrov, and Tetsuo Irifune preprint

Partition of Al between Phase D and Phase H at high pressure: Results from a simultaneous structure refinement of the two phases coexisting in an unique grain Luca Bindi, Masayuki Nishi, and Tetsuo Irifune preprint

The mafic component of the lunar crust: Constraints on the crustal abundance of mantle and intrusive rock, and the mineralogy of lunar anorthosites Sarah T. Crites, Paul G. Lucey, and G. Jeffrey Taylor preprint

Grain size measurement from two-dimensional micro-X-ray diffraction: Laboratory application of a radial integration technique Michael S. Bramble, Roberta L. Flemming, and Phil J. A. McCausland preprint

Decrease of hydrogen incorporation in forsterite from CO2-H2O-rich kimberlitic liquid Virginie Baptiste, Sylvie Demouchy, Shantanu Keshav, Fleurice Parat, Nathalie Bolfan-Casanova, Pierre Condamine, and Patrick Cordier preprint

Recoil-free Fractions of Iron in Aluminous Bridgmanite from Temperature Dependent Mössbauer Spectra Jiachao Liu, Bjorn Mysen, Yingwei Fei, and Jie Li preprint

Melting curve of NaCl to 20 GPa from electrical measurements of capacitive current Zeyu Li and Jie Li preprint

Spectroscopic study of ordering in non- stoichiometric magnesium aluminate spinel Vitaly Erukhimovitch, Yuval Mordekoviz, and Shmuel Hayun preprint

Metamorphic chronology comes of age: past achievements and future prospects Matthew J. Kohn preprint

High-Pressure Phases of Cordierite From Single-Crystal X-Ray Diffraction to 15 GPa Gregory J. Finkelstein, Przemyslaw K. Dera, and Thomas S. Duffy preprint

Current limitations of molecular dynamic simulations as probes of thermo-physical behavior of silicate melts Jean-Philippe Harvey and Paul D. Asimow preprint

Transition metal incorporation into 1mackinawite (tetragonal FeS) Kideok D. Kwon, Keith Refson, and Garrison Sposito preprint

Magmatic volatiles (H, C, N, F, S, Cl) in the lunar mantle, crust, and regolith: Abundances, distributions, processes, and reservoirs Francis M. McCubbin, Kathleen E. Vander Kaaden, Romain Tartèse, Rachel L. Klima, Yang Liu, James Mortimer, Jessica J. Barnes, Charles K. Shearer, Allan H. Treiman, David J. Lawrence, Stephen M. Elardo, Dana M. Hurley, Jeremy W. Boyce, and Mahesh Anand preprint

Three-component mixed-layer illite-smectite-kaolinite (I/S/K) minerals in hydromorphic soils, south China Hanlie Hong, Feng Cheng, Ke Yin, Gordon Jock Churchman, and Chaowen Wang preprint

Elastic wave velocity anomalies of anorthite in subducting plate: In situ experiments Kyoko N. Matsukage, Yu Nishihara, Fumiya Noritake, Katsuyuki Kawamura, Noriyoshi Tsujino, Moe Sakurai, Yuji Higo, Junichi Nakajima, Akira Hasegawa, and Eiichi Takahashi preprint

Petrology on Mars Harry Y. McSween Jr. preprint

Discovery of stishovite in Apollo 15299 sample Shohei Kaneko, Masaaki Miyahara, Eiji Ohtani, Tomoko Arai, Naohisa Hirao, and Kazuhisa Sato preprint

Normal to inverse transition in martian spinel: Understanding the interplay between chromium, vanadium, and iron valence state partitioning through a crystal-chemical lens James J. Papike, Paul V. Burger, Aaron S. Bell, Charles, K. Shearer, Loan Le, and John Jones preprint

New structure of high-pressure body-centered orthorhombic Fe2SiO4 Takamitsu Yamanaka, Atsushi Kyono, Yuki Nakamoto, Svetlana Kharlamova, Viktor V. Struzhkin, Stephen A. Gramsch, Ho-kwang Mao, and Russell J. Hemley preprint

Beyond the Equilibrium Paradigm: How Consideration of Kinetics Enhances Metamorphic Interpretation William D. Carlson, David R.M. Pattison, and Mark J. Caddick preprint

Uranium scavenging during mineral replacement reactions Kan Li, Allan Pring, Barbara Etschmann, Edeltraud Macmillan, Yung Ngothai, Brian O’Neill, Anthony Hooker, Fred Mosselmans, and Joël Brugger preprint

Magnetic anisotropy in natural amphibole crystals Andrea R. Biedermann, Christian Bender Koch, Thomas Pettke, and Ann M. Hirt preprint

Synthesis, characterization and thermodynamics of arsenates forming in the Ca-Fe(III)-As(V)-NO3 system: Implications for the stability of Ca-Fe arsenates Dogan Paktunc, Juraj Majzlan, Artis Huang, Yves Thibault, Michel B. Johnson, and Mary Anne White preprint

Planar microstructures in zircon from paleo-seismic zones Elizaveta Kovaleva, Urs Klötzli, Gerlinde Habler, and John Wheeler preprint

Dissolved Cl, Oxygen Fugacity, and Their Effects on Fe Behavior in a Hydrous Rhyodacitic Melt Aaron S. Bell and James D. Webster preprint

A new mineral from the Bellerberg, Eifel, Germany, intermediate between mullite and sillimanite Reinhard X. Fischer, Valeria Tikhonova, Johannes Birkenstock, Lennart A. Fischer, Klaus Herrmann, Kurt Mengel, and Hartmut Schneider preprint

Yusupovite, Na2Zr(Si6O15)(H2O)3, a new mineral species from the Darai-Pioz alkaline massif and its implications as a new microporous filter for large ions Atali A. Agakhanov, Leonid A. Pautov, Vladimir Y. Karpenko, Elena Sokolova, Yassir A. Abdu, Frank C. Hawthorne, Igor V. Pekov, and Oleg I. Siidra preprint

Compositional variation and timing of aluminum phosphate-sulfate minerals in the basement rocks along the P2 fault and in association with the McArthur River uranium deposit, Athabasca Basin, Saskatchewan, Canada Erin E. Adlakha and Keiko Hattoris preprint

Topotactic and reconstructive changes at high pressure and temperatures from Cs-natrolite to Cs-hexacelsian Huijeong Hwang, Donghoon Seoung, G. Diego Gatta, Douglas A. Blom, Thomas Vogt, and Yongjae Lees preprint

Dependence of R fluorescence lines of rubies on Cr3+ concentration at various temperatures Gao Rong, Li Heping, and Zhao Jingtai preprint

Assuring the Future of Mineralogy John B. Brady preprint

Technical Note: Calculation of stoichiometry from EMP data for apatite and other phases with mixing on monovalent anion sites Richard A. Ketcham preprint

Aluminum and iron behavior in glasses from destabilized spinels: a record of fluid/melt-mineral interaction in mantle xenoliths from Massif Central, France Michel Fialin and Christiane Wagner preprint

Silica polymorphs in lunar granite: Implications for granite petrogenesis on the Moon Stephen M. Seddio, Randy L. Korotev, Bradley L. Jolliff, and Alian Wang preprint

Origin and significance of the yellow cathodoluminescence (CL) of quartz Jens Götze, Yuanming Pan, Marion Stevens-Kalceff, Ulf Kempe, and Axel Müller preprint

Weathering of the Ethiopian volcanic province: A new weathering index to characterize and compare soils Jennifer S Le Blond, Javier Cuadros, Yordanos B Molla, Tadesse Berhanu, Mohammed Umer, Peter J Baxter, and Gail Davey preprint

Enthalpies of formation of rare earth niobates, RE3NbO7 Aleksandra Mielewczyk-Gryn and Alexandra Navrotsky preprint

Synthesis of Large and Homogeneous Single Crystals of Water-Bearing Minerals by Slow Cooling at Deep-Mantle Pressures Takuo Okuchi, Narangoo Purevjav, Naotaka Tomioka, Jung-Fu Lin, Takahiro Kuribayashi, Louise Schoneveld, Huijeong Hwang, Naoya Sakamoto, Noriyuki Kawasaki, and Hisayoshi Yurimoto preprint

Bubbles do matter Claudia Cannatelli preprint

Linear partitioning in binary solutions: a review with a novel partitioning array S. A. Morse preprint

Zircon dissolution and growth during metamorphism Suzanne L. Baldwin preprint

The mobility of Nb in rutile-saturated NaCl- and NaF-bearing aqueous fluids from 1-6.5 GPa and 300-800 °C Elizabeth A. Tanis, Adam Simon, Oliver Tschauner, Paul Chow, Yuming Xiao, Pamela Burnley, Christopher J. Cline Ii, John M. Hanchar, Thomas Pettke, Guoyin Shen, and Yusheng Zhao preprint

Kinetics of deuteration in andradite Peipei Zhang, Jannick Ingrin, Christophe Depecker, and Qunke Xia preprint

The Effect of the [Na/(Na+K)] Ratio on Fe Speciation in Phonolitic Glasses Maria Rita Cicconi, Gabriele Giuli, Werner Ertel-Ingrisch, Eleonora Paris, and Donald B. Dingwell preprint


Scandium- and REE-rich tourmaline replaced by Sc-rich REE-bearing epidote-group mineral from the mixed (NYF + LCT) Kracovice pegmatite (Moldanubian Zone, Czech Republic) Renata Čopjaková, Radek Škoda, Michaela Vašinová Galiová, Milan Novák, and Jan Cempírek preprint

Identification of nanocrystalline goethite in reduced clay formations. Application to the Callovian-Oxfordian formation of Bure (France) Myriam Kars, Catherine Lerouge, Sylvain Grangeon, Charles Aubourg, Christophe Tournassat, Benoît Madé, and Francis Clarets preprint

Effect of crystal defects on diamond morphology during dissolution in the mantle Alexander F. Khokhryakov and Yuri N. Palyanov preprint

Inter-Laboratory Comparison of Fission Track Confined Length and Etch Figure Measurements in Apatite Richard A. Ketcham, Andrew Carter, and Anthony J. Hurford preprint

High-pressure equation of state and phase transition in PbAl2Si2O8 feldspar Nadia Curetti, Piera Benna and Emiliano Bruno preprint

Experimental confirmation of high temperature silicate liquid immiscibility in multicomponent ferrobasaltic systems Tong Hou and Ilya V. Veksler preprint

222Rn and 220Rn emanations as a function of the absorbed α-doses from select metamict minerals Dariusz Malczewski and Maria Dziurowicz preprint

Pink colour in Type I diamonds: Is deformation twinning the cause? Daniel Howell, David Fisher, Sandra Piazolo, William L. Griffin, and Samantha J. Sibleys preprint

Mineralogy, materials science, energy, and environment – A 2015 perspective Alexandra Navrotsky preprint

NMR and Computational Molecular Modeling Studies of Mineral Surfaces and Interlayer Galleries: A Review R. James Kirkpatrick, Andrey G. Kalinichev, Geoffrey M. Bowers, A. Ozgur Yazaydin, Marimuthu Krishnan, Moumita Saharay, and Christin P. Morrow preprint

Optical Constants of Synthetic Potassium, Sodium, and Hydronium Jarosite Elizabeth C. Sklute, Timothy D. Glotch, Jennifer L. Piatek, William R. Woerner Alexis A. Martone, and Meredith L. Kraner preprint

Nano- and Micro-geochronology in Hadean and Archean Zircons by Atom-Probe Tomography and SIMS: New Tools for Old Minerals John W. Valley, David A. Reinhard, Aaron J. Cavosie, Takayuki Ushikubo, Daniel F. Lawrence, David J. Larson, Thomas F. Kelly, David Snoeyenbos, and Ariel Strickland preprint

First evidence of CaCO3-III and CaCO3-IIIb - high-pressure polymorphs of calcite – authigenically formed in near surface sediments Maike Schaebitz, Richard Wirth, Christoph Janssen, and Georg Dresen preprint

Pieczkaite, ideally Mn5(PO4)3Cl, a new apatite-supergroup mineral from Cross Lake, Manitoba, Canada: Description and crystal structure Kimberly Tait, Neil A. Ball, and Frank C. Hawthorne preprint

Quantification of Water in Majoritic Garnet Sylvia-Monique Thomas, Kathryn Wilson, Monika Koch-Müller, Erik H. Hauri, Catherine McCammon, Steven D. Jacobsen, John Lazarz, Dieter Rhede, Minghua Ren, Neal Blair, and Stephan Lenz preprint

Transition metal cation site preferences in forsterite (Mg2SiO4) determined from paramagnetically shifted NMR resonances Ryan J. McCarty, Aaron C. Palke, Jonathan F. Stebbins, and J. Stephen Hartman preprint

Impact of preparation method and chemical composition on physicochemical and photocatalytic properties of nano-dimensional magnetite-type materials Zara P. Cherkezova-Zheleva, Katerina L. Zaharieva, Martin P. Tsvetkov, Vilma S. Petkova, Maria M. Milanova, and Ivan G. Mitov preprint

Reaction pathways towards the formation of dolomite Carlos M. Pina preprint

Influence of hydration on 23Na, 27Al and 29Si MAS-NMR 2 spectra of sodium saponites and sodium micas J. Sanz, I.Sobrados, and J. L. Robert preprint

The many facets of apatite John M. Hughes preprint

Surface transformations of platinum grains from Fifield, New South Wales, Australia S. Gordon Campbell, Frank Reith, Barbara Etschmann, Joël Brugger, Gema Martinez-Criado, Robert A. Gordon, and Gordon Southam preprint

Hydrous Species in Feldspars: a Reassessment Based on FTIR and SIMS Jed L. Mosenfelder, George R. Rossman, and Elizabeth A. Johnson preprint

An insight at the inverse transformation of realgar altered by light Giovanni Pratesi and Matteo Zoppi preprint

Effect of pores and grain size on the elastic and piezoelectric properties of quartz based materials Julie Aufort, Oktay Aktas, Michael A. Carpenter, and Ekhard K.H. Salje preprint

American Mineralogist Special Collection: Building Planets Tracy Rushmer and Heather C. Watson preprint

Competition between two redox states in silicate melts: an in-situ simultaneous experiment at the Fe K-edge and Eu L3-edge Maria Rita Cicconi, Daniel R. Neuville, Isabelle Tannou, François Baudelet, Paul Floury, Eleonora Paris, and Gabriele Giuli preprint

Routine characterization and interpretation of complex alkali feldspar intergrowths Ian Parsons, John D. Fitz Gerald, and Martin R. Lee preprint

Insights into the structure of mixed CO2/CH4 in gas hydrates S. Michelle Everett, Claudia J. Rawn, Bryan C. Chakoumakos, David J. Keffer, Ashfia Huq, and Tommy J. Phelps preprint

Very large differences in intramolecular D-H partitioning in hydrated silicate melts synthesized at upper mantle pressures and temperatures Ying Wang, Samantha X. Cody, Dionysis Foustoukos, Bjorn O. Mysen, and George D. Cody preprint

Temperature dependence of crystal structure of CaGeO3 high-pressure perovskite phase and experimental determination of its Debye temperatures studied by low- and high-temperature single crystal X-ray diffraction Akihiko Nakatsuka, Shoichi Kuribayashi, Noriaki Nakayama, Hiroshi Fukui, Hiroshi Arima, Akira Yoneda, and Akira Yoshiasa preprint

Optical properties of siderite (FeCO3) across the spin transition: Crossover to iron-rich carbonates in the lower mantle Sergey S. Lobanov, Alexander F. Goncharov, and Konstantin D. Litasov/td> preprint

First-Principles Prediction of Pressure Enhanced Defect Segregation and Migration at MgO Grain Boundaries Bijaya B. Karki, Dipta B. Ghosh, and Ashok K. Verma preprint

Thermal expansion of F-Cl apatite crystalline solutions Guy Hovis, Tony Abraham, William Hudacek, Sarah Wildermuth, Brian Scott, Caitlin Altomare, Aaron Medford, Maricate Conlon, Matthew Morris, Amanda Leaman, Christine Almer, Gary Tomaino, and Daniel Harlov preprint

A route for the direct crystallization of dolomite Juan Diego Rodriguez-Blanco, Samuel Shaw and Liane G. Benning preprint

Cation exchange capacity and water content of opal in sedimentary basins: example from the Monterey Formation, California Arkadiusz Derkowski, Jan Środoń, and Douglas K. McCarty preprint

Fayalite oxidation processes in Obsidian Cliffs rhyolite flow, Oregon Audrey M. Martin, Etienne Médard, Bertrand Devouard, Lindsay P. Keller, Kevin Righter, Jean-Luc Devidal, and Zia Rahman preprint

Hydrothermal chloritization process from biotite in the Toki granite, Central Japan: Temporal variation of chemical characteristics in hydrothermal fluid associated with the chloritization Takashi Yuguchi, Eiji Sasao, Masayuki Ishibashi, and Tadao Nishiyama preprint

Modelling siderophile elements during core formation and accretion, and the role of the deep mantle and volatiles Kevin Righter preprint

Calculation of the energetics of water incorporation in majorite garnet Jeffrey S. Pigott, Kate Wright, Julian D. Gale, and Wendy R. Panero preprint