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In situ observation of the pyroxene-majorite transition in Na2MgSi5O12 using synchrotron radiation and Raman spectroscopy of Na-majorite Anna Dymshits, Igor Sharygin, Konstantin Litasov, Anton Shatskiy, Pavel Gavryushkin, Eiji Ohtani, Akio Suzuki, and Kenichi Funakoshi preprint

Carbonate mineralization in percolated olivine aggregates: Linking effects of crystallographic orientation and fluid flow Steve Peuble, Muriel Andreani, Marguerite Godard, Philippe Gouze, Fabrice Barou, Bertrand Van de Moortele, David Mainprice, and Bruno Reynard preprint

Trinitite redux: Mineralogy and petrology G. Nelson Eby, Norman Charnley, Duncan Pirrie, Robert Hermes, John Smoliga, and Gavyn Rollinson preprint

Alkali influence on the water speciation and the environment of protons in silicate glasses revealed by 1H MAS NMR spectroscopy Charles Le Losq, George D. Cody, and Bjorn O. Mysen preprint

Pauloabibite, trigonal NaNbO3, isostructural with ilmenite, from the Jacupiranga carbonatite, Cajati, São Paulo, Brazil Luiz A.D. Menezes Filho, Daniel Atencio, Marcelo B. Andrade, Robert T. Downs, Mário L.S.C. Chaves, Antônio W. Romano, Ricardo Scholz, and Aba I. C. Persiano preprint

A Refined Monoclinic Structure for a Variety of “Hydrohematite” Kristina M. Peterson, Peter J. Heaney, Jeffrey E. Post, and Peter J. Eng preprint

Prevalence of growth twins among anhedral plagioclase microlites Carrie R. Brugger and Julia E. Hammer preprint

Prediction of enthalpies of formation of hydrous sulfates Sophie Billon and Philippe Vieillard preprint

Non-invasive assessment of the formation of tourmaline nodules by X-ray microtomography and computer modeling Luca Valentini, Barbara Marchesini, Matteo Parisatto, Diego Perugini, and Gilberto Artiolis preprint

Tourmaline as a Petrogenetic Monitor of the Origin and Evolution of the Berry-Havey Pegmatite (Maine, USA) Encarnación Roda-Robles, William Simmons, Alfonso Pesquera, Pedro P. Gil-Crespo, James Nizamoff, and José Torres-Ruiz preprint

Anhydrite stability and the effect of Ca on the behavior of sulfur in felsic magmas Ruifang Huang and Hans Keppler preprint

Trace-element partitioning between plagioclase, alkali feldspar, Ti-magnetite, biotite, apatite and evolved potassic liquids from Campi Flegrei (Southern Italy) Lorenzo Fedele, Michele Lustrino, Leone Melluso, Vincenzo Morra, Alberto Zanetti, and Riccardo Vannucci preprint

Phase relationships in the system K2CO3-CaCO3 at 6 GPa and 900-1450ºC Anton Shatskiy, Yuri M. Borzdov, Konstantin D. Litasov, Igor S. Sharygin, Yuri N. Palyanov, and Eiji Ohtani preprint

Synthetic and natural ammonium-bearing tourmaline Bernd Wunder, Eleanor Berryman, Birgit Plessen, Dieter Rhede, Monika Koch-Müller, and Wilhelm Heinrich preprint

At the Blurry Edge of Mineralogy Peter J. Heaney preprint

Origin of the lunar highlands Mg-suite: An integrated petrology, geochemistry, chronology, and remote sensing perspective Charles K. Shearer, Stephen M. Elardo, Noah E. Petro, Lars E. Borg, and Francis M. McCubbin preprint

Structural effects on incorporated water in carbonated apatites Jennifer E. Goldenberg, Zachary Wilt, Demetra V. Schermerhorn, Jill D. Pasteris, and Claude H. Yoder preprint

The rapid expansion of environmental mineralogy in unconventional ways: Beyond the accepted definition of a mineral, the latest technology, and using nature as our guide Manuel A. Caraballo, F. Marc Michel, and Michael F. Hochella, Jr preprint

The system Na2CO3-FeCO3 at 6 GPa and its relation to the system Na2CO3-FeCO3-MgCO3 Anton Shatskiy, Sergey V. Rashchenko, Eiji Ohtani, Konstantin D. Litasov, Mikhail V. Khlestov, Yuri M. Borzdov, Igor N. Kupriyanov, Igor S. Sharygin, and Yuri N. Palyanov preprint

New constraints on electron-beam induced halogen migration in apatite Michael J. Stock, Madeleine C.S. Humphreys, Victoria C. Smith, Roger D. Johnson, and David M. Pyle, EIMF preprint

AIM analysis and the form of the bond-valence equation Matthew C. F. Wander, Barry R. Bickmore, Larissa Lind, Charles Andros, John Hunt, Hannah Checketts, and Tyler Goodell preprint

Tetrataenite in terrestrial rock Bibhuranjan Nayak and Franz Michael Meyer preprint

Microelectronic Junctions in Arsenian Pyrite Due to Impurity and Mixed Sulphide Heterogeneity Jamie S Laird, Colin M MacRae, Angela Halfpenny, Ross Large, and Chris G Ryan preprint

Thermo-compression of pyrope-grossular garnet solid solutions: non-linear compositional dependence Wei Du, Simon Martin Clark, and David Walker preprint

The use of cation-cation and anion-anion bonds to augment the bond-valence model Matthew C. F. Wander, Barry R. Bickmore, Matthew Davis, W. Joel Johansen, Charles Andros, and Larissa Lind preprint

Optical absorption anisotropy of high-density, wide-gap, high-hardness SiO2 polymorphs seifertite, stishovite and coesite K. Klier, J.A. Spirko and K. M. Landskron preprint

Near-infrared investigation of folding sepiolite Maria Tsampodimou, Vanessa-Jane Bukas, Elizabeth T. Stathopoulou, Vassilis Gionis,and Georgios D. Chryssikos preprint

First-principles study of sulfur isotop fractionation in pyrite-type disulfides Shanqi Liu, Yongbing Li, Jianming Liu, and Yaolin Shi preprint

Geobarometry from host-inclusion systems: the role of elastic relaxation Ross J. Angel, Mattia L. Mazzucchelli, Matteo Alvaro, Paolo Nimis, and Fabrizio Nestola preprint

Steinhardtite, a new body-centered-cubic allotropic form of aluminum from the Khatyrka CV3 carbonaceous chondrite Luca Bindi, Nan Yao, Chaney Lin, Lincoln S. Hollister, Glenn J. Macpherson, Gerald R. Poirier, Christopher L. Andronicos, Vadim V. Distler, Michael P. Eddy, Alexander Kostin, Valery Kryachko, William M. Steinhardt, and Marina Yudovskaya preprint

Mid-infrared emission spectroscopy and visible/near-infrared reflectance spectroscopy of Fe-sulfate minerals Melissa D. Lane, Janice L. Bishop, M. Darby Dyar, Takahiro Hiroi, Stanley A. Mertzman, David L. Bish, Penelope L. King, and A. Deanne Rogers preprint

Megacrystic zircon with planar fractures in miaskite-type nepheline pegmatites formed at high pressures in the lower crust (Ivrea Zone, southern Alps, Switzerland) Urs Schaltegger, Alexey Ulianov, Othmar Müntener, Maria Ovtcharova, Irena Peytcheva, Pierre Vonlanthen, Torsten Vennemann, Marco Antognini, and Fabio Girlanda preprint

Chlorine - hydroxyl diffusion in pargasitic amphibole Wen Su, Don.R. Baker, Luping Pu, Liping Bai, Xin Liu, and Cedrick O'Shaughnessy preprint

High-pressure high-temperature transitions in MgCr2O4 and crystal structures of new Mg2Cr2O5 and post-spinel MgCr2O4 phases with implications for ultra-high pressure chromitites in ophiolites Takayuki Ishii, Hiroshi Kojitani, Kiyoshi Fujino, Hitoshi Yusa, Daisuke Mori, Yoshiyuki Inaguma, Yoshitaka Matsushita, Kazunari Yamaura, and Masaki Akaogi preprint

The chemical behavior of fluids released during deep subduction based on fluid inclusions Maria Luce Frezzotti and Simona Ferrando preprint

First Crystal Structure Determination of Alumohydrocalcite and Classification of the Dundasite Group Marcin Stachowicz, Jan Parafiniuk, Claire Wilson, Simon Coles, and Krzysztof Woźniak preprint

Nuragheite, Th(MoO4)2·H2O, the second natural thorium molybdate and its relationships to ichnusaite and synthetic Th(MoO4)2 Paolo Orlandi, Cristian Biagioni, Luca Bindi, and Stefano Merlino preprint

Mineral Evolution and Earth History Dwight C. Bradley preprint

A new interpretation of decomposition products of serpentine under shock compression Youjun Zhang, Toshimori Sekine, and Hongliang He preprint

Combined geochemistry and geochronology constrains coupled subduction of oceanic and continental crust in the Huwan shear zone, central China Hao Cheng and Jeffrey D. Vervoort preprint

Slawsonite–celsian–hyalophane assemblage from a picrite sill (Prague Basin, Czech Republic) Zuzana Tasáryová, Jiří Frýda, Vojtěch Janoušek, and Martin Racek preprint

Ordering kinetics in synthetic Mg(Al,Fe3+)2O4 spinels: quantitative elucidation of the whole Al-Mg-Fe partitioning, rate constants, activation energies Filippo Parisi, Davide Lenaz, Francesco Princivalle, and Luciana Sciascia preprint

Thermal expansion of fluorapatite-hydroxylapatite crystalline solutions Guy L. Hovis, Brain T. Scott, Caitlin M. Altomare, Amanda R. Leaman, Matthew D. Morris, Gary P. Tomaino, and Francis M. McCubbin preprint

Redox-driven exsolution of iron-titanium oxides in magnetite in Miller Range (MIL) 03346 nakhlite: Evidence for post crystallization oxidation in the nakhlite cumulate pile? K. Righter, L.P. Keller, Z. Rahman, and R. Christoffersen preprint

Merrillite and Apatite as Recorders of Planetary Magmatic Processes Brad Jolliff preprint

Comparing Clays From Mars and Earth Dr. John Bridges preprint

Franciscan geologic history constrained by tectonic/olistostromal high-grade metamafic blocks in the iconic California Mesozoic-Tertiary accretionary complex W. G. Ernst preprint

High-pressure elasticity of sodium majorite garnet, Na2MgSi5O12 Mainak Mookherjee preprint

Optical absorption spectroscopy study of the causes for color variations in natural Fe-bearing gahnite: insights from iron valency and site distribution data Rosa Anna Fregola, Henrik Skogby, Ferdinando Bosi, Veronica D’Ippolito, Giovanni B. Andreozzi, and Ulf Hålenius preprint

Si-magnetite Nano-precipitates in Silician Magnetite from Banded Iron Formation: Z-contrast Imaging and ab initio Study Huifang Xu, Zhizhang Shen, and Hiromi Konishi preprint

Ab initio calculations of elastic constants of plagioclase feldspars Pamela Kaercher, Burkhard Militzer, and Hans-Rudolf Wenk preprint

Experimental study of phlogopite reaction rim formation on olivine in phonolite melts: kinetics, reaction rates and residence times Thomas Bartholomew Grant, Ralf Milke, Bernd Wunder, Richard Wirth, and Dieter Rhede preprint

The replacement of chalcopyrite by bornite under hydrothermal conditions Jing Zhao, Joël Brugger, Yung Ngothai, and Allan Pring preprint

Determining hematite content from NUV/Vis/NIR spectra: Limits of detection William Balsam, Junfeng Ji, Devon Renock, Bobby C. Deaton, and Earle Williams preprint

Energetics of Lanthanide-Doped Calcium Phosphate Apatite S. Mahboobeh Hosseini, Christophe Drouet, Ahmed Al-Kattan, and Alexandra Navrotsky preprint

Densified glasses as structural proxies for high-pressure melts: configurational compressibility of silicate melts retained in quenched and decompressed glasses Wim J. Malfait, Rita Seifert, and Carmen Sanchez-Valle preprint

Etch-pit size, dissolution rate, and time in the experimental dissolution of olivine: Implications for estimating olivine lifetime at the surface of Mars Michael A. Velbel preprint

Diagenetic formation of interlayer-deficient fluorophlogopite as a clay mineral in Early Cambrian phosphorite (Lesser Himalaya, India): The trioctahedral analogue of illite Gerhard Franz, Dorothee Hippler, Dieter Rhede, Richard Wirth, Dhiraj Mohan Banerjee, and Nicolaj Mahlstedt preprint

A large spectral survey of small lunar craters: Implications for the composition of the lunar mantle Paul G. Lucey, Jessica A. Norman, Sarah T. Crites, G. Jeffrey Taylor, B. Ray Hawke, and Myriam Lemelins preprint

Data-Driven Abductive Discovery in Mineralogy Robert M. Hazen preprint

Thermal conductivity of molten and glassy NaAlSi3O8, CaMgSi2O6 and Mg2SiO4 by Non Equilibrium Molecular Dynamics at elevated Temperature and Pressure: Part 1- Methods and Results Dane Tikunoff and Frank J. Spera preprint

Synthesis of quenchable high-pressure form of magnetite (h-Fe3O4) with composition Fe1(Fe2+0.75 Mg0.26) Fe2(Fe3+ 0.70 Cr0.15Al0.11 Si0.04)2O4 Monika Koch-Müller, Enrico Mugnaioli, Dieter Rhede, Sergio Speziale, Ute Kolb, and Richard Wirth preprint

In-situ characterization of oxalic acid breakdown at elevated P and T: Implications for organic C-O-H fluid sources in petrologic experiments Francis M. McCubbin, Dimitri A. Sverjensky, Andrew Steele, and Bjorn O. Mysen preprint

Quantum mechanical modeling of hydrolysis and H2O-exchange in Mg-, Ca- and Ni-silicate clusters: Implications for dissolution mechanisms of olivine minerals Christin P. Morrow, Amanda A. Olsen, and James D. Kubicki preprint

Natural sepiolite: enthalpies of dehydration, dehydroxylation and formation derived from thermochemical studies Lyubov P. Ogorodova, Irina A. Kiseleva, Marina F. Vigasina, Yurii K. Kabalov, Roman O. Grishchenko, and Lyubov V. Mel’chakova preprint

Characterization of porosity in sulfide ore minerals: A USANS/SANS study Fang Xia, Jing Zhao, Barbara E. Etschmann, Joël Brugger, Chris Garvey, Christine Rehm, Hartmut Lemmel, Jan Ilavsky, Young-Soo Han, and Allan Pring preprint

The role of water in generation of group II kimberlite magmas: constraints from multiple saturation experiments Alexander G. Sokol, Alexey N. Kruk, and Yury N. Palyanov preprint

Theoretical and applied implications of structural order of vermiculite irradiated C. Marcos preprint

Paulings Rules, in a World of Non-Spherical Atoms Robert T. Downs preprint

An Examination Of The Ti-In-Quartz Thermobarometer In Rocks That Contain Dynamically Recrystallized Quartz: Re-Equilibration Of [Ti] During Recrystallization John M. Hughes preprint

Reflectance spectroscopy of plagioclase-dominated mineral mixtures: Implications for characterizing lunar anorthosites remotely Leah C. Cheek and Carlé M. Pieters preprint

Synthesis and structure of carbonated barium and lead fluorapatites: effect of cation size on A-type carbonate substitution Zachary Wilt, Caitlyn Fuller, Taia Bachman, Victoria Weidner, Jill D. Pasteris, and Claude H. Yoder preprint

Energetics of heterometal substitution in ε-Keggin [MO4Al12(OH)24(OH2)12]6/7/8+ ions Dana Reusser, William H. Casey, and Alexandra Navrotsky preprint

Spectral Properties of Ca-sulfates: Gypsum, Bassanite and Anhydrite Janice L. Bishop, Melissa D. Lane, M. Darby Dyar, Sara J. King, Adrian J. Brown, and Gregg Swayze preprint

Ferrian saponite from the Santa Monica Mountains (California, USA, Earth): Characterization as an analog for clay minerals on Mars with application to Yellowknife Bay in Gale Crater A.H. Treiman, R.V. Morris, D.G. Agresti, T. G. Graff, C.N. Achilles, E.B. Rampe, T.F. Bristow, D.W. Ming, D.F. Blake, D.T. Vaniman, D.L. Bish, S.J. Chipera, S.M. Morrison, and R.T. Downs preprint

Ab initio investigations of dioctahedral interlayer-deficient mica: Modeling particles of illite found within gas shale Dawn Geatches, Douglas McCarty and Jennifer Wilcox preprint

Time-Resolved Synchrotron X-ray Diffraction Study of the Dehydration Behavior of Chalcophanite Jeffrey E. Post and Peter J. Heaney preprint

Phosphate-halogen Metasomatism of Lunar Granulite 79215: Impact-induced Fractionation of Volatiles and Incompatible Elements Allan H. Treiman, Jeremy W. Boyce, Juliane Gross, Yunbin Guan, John M. Eiler, and Edward M. Stolper preprint

Agakhanovite-(Y), ideally (YCa)2KBe3Si12O30, a new milarite-group mineral from the Heftetjern Pegmatite, Tørdal, Southern Norway: Description and crystal structure Frank C. Hawthorne, Yassir A. Abdu, Neil A. Ball, Petr Černý, and Roy Kristiansen preprint

“Silicified” pyrochlore from nepheline syenite (mariupolite) of the Mariupol Massif, SE Ukraine: a new insight into the role of silicon in the pyrochlore structure Magdalena Dumańska-Słowik, Adam Pieczka, Gioacchino Tempesta, Zbigniew Olejniczak, and Wiesław Heflik preprint

Crystal Chemistry And Surface Configurations Of Two Polylithionite-1M Crystals Chiara Elmi, Maria Franca Brigatti, Stephen Guggenheim, Luca Pasquali, Monica Montecchi, and Stefano Nannarone preprint

Trona at extreme conditions: A pollutant-sequestering material at high pressures and low temperatures Earl O’Bannon III, Christine M. Beavers, and Quentin Williams preprint

Ti resetting in quartz during dynamic recrystallization: Mechanisms and significance Kyle T. Ashley, William D. Carlson, Richard D. Law, and Robert J. Tracy preprint

Phase diagram and P-V-T equation of state of Al-bearing seifertite at lowermost mantle conditions D. Andrault, R.G. Trønnes, Z. Konôpková, W. Morgenroth, H.-P. Liermann, G. Morard, and M. Mezouar preprint

The Distribution of Mg-­‐Spinel across the Moon and Constraints on Crustal Origin Carle M. Pieters, Kerri Donaldson Hanna, Leah Cheek, Deepak Dhingra, Tabb Prissel, Colin Jackson, Daniel Moriarty, Stephen Parman, and Lawrence A. Taylor preprint

Spinel-rich lithologies in the lunar highland crust: Linking lunar samples with crystallization experiments and remote sensing Juliane Gross, Peter J. Isaacson, Allan H. Treiman, Loan Le, and Julia K. Gorman preprint

Mid-infrared optical constants of clinopyroxene and orthoclase derived from oriented single crystal reflectance spectra Jessica A. Arnold, Timothy D. Glotch, and Anna M. Plonka preprint

Crystal Structure of Guinier-Preston Zones in Orthopyroxene: Z-contrast imaging and ab inito study Huifang Xu, Zhizhang Shen, Hiromi Konishi, and Gufeng Luo preprint

In-situ U-Th/Pb geochronology of (urano)thorite John M. Cottle preprint

Mineralogy and crystal chemistry of Mn, Fe, Co, Ni, and Cu in a deep-sea Pacific polymetallic nodule Alain Manceau, Martine Lanson, and Yoshio Takahashi preprint

Flower-like apatite recording microbial processes through deep geological time and its implication to the search for mineral records of life on Mars Si Sun, Lung S. Chan, and Yi-Liang Lis preprint

VNIR spectral variability of the igneous stratified Stillwater Complex: a tool to map lunar highlands Cristian Carli, Giovanni Serventi, and Maria Sgavetti preprint

Physio-chemical properties of gamma-irradiated vermiculite and their significance for radiation protection and thermoluminescence Sukhnandan Kaur, Surinder Singh, and Lakhwant Singh preprint

Crystal chemistry of synthetic Ti-Mg bearing hibonites: A single crystal X-ray study Mattia Giannini, Tiziana Boffa Ballaran, and Falko Langenhorst preprint

The occurrence and composition of chevkinite-(Ce) and perrierite-(Ce) in tholeiitic intrusive rocks and lunar mare basalt Janet R. Muhling, Alexandra A. Suvorova, and Birger Rasmussen preprint

Visible-Infrared Spectral Properties of Iron-bearing Aluminate Spinel Under Lunar-like Redox Conditions Colin R.M. Jackson, Leah C. Cheek, Kelsey B. Williams, Kerri Donaldson Hanna, Carle M. Pieters, Stephen W. Parman, Reid F. Cooper, Darby Dyar, Melissa Nelms, and Mark R. Salvatore preprint

Quantification of α-particle radiation damage in zircon Katie M. Smye, Clive Brigden, Eric R. Vance and Ian Farnan preprint

Thermodynamic study of monoclinic pyrrhotite in equilibrium with pyrite in the Ag-Fe-S system by solid-state electrochemical cell technique Dmitriy A. Chareev, Mikhail V. Voronin, and Evgeniy G. Osadchii preprint

Ichnusaite, Th(MoO4)2·3H2O, the first natural thorium molybdate: occurrence, description, and crystal structure Paolo Orlandi, Cristian Biagioni, Luca Bindi, and Fabrizio Nestola preprint