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Welcome to the American Mineralogist preprint page. Recently all preprints have been made open to all readers. These preprints are unedited manuscritps accepted for publication that will undergo copyediting, layout, and review of the proof before being published. Always consult the final, published document as a good practice. Remember to have your institution subscribe to American Mineralogist! Note that individual online subscriptions are via membership in MSA (and members get free online color in their paper) -- check out all the info via the pull-down links above including how to be an author and submit your paper.

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Please cite these papers: Authors (Year) Title. American Mineralogist, in press. DOI.(DOI is live when article is live.)

Title Authors Future DOI Link
A New Clinopyroxene-liquid Barometer, and Implications for Magma Storage Pressures under Icelandic Rift ZonesDavid A. Neave and Keith D. Putirka10.2138/am-2017-5968preprint
Barometric constraints based on apatite inclusions in garnetKyle T. Ashley, Drew W. Barkoff, and Matthew Steele-MacInnis10.2138/am-2017-5898preprint
Column anion arrangements in chemically zoned ternary chlorapatite and fluorapatite from Kurokura, JapanSean R. Kelly, John Rakovan, and John M. Hughes10.2138/am-2017-5825preprint
Magmatic graphite inclusions in Mn-Fe-rich fluorapatite of perphosphorus granites (the Belvís pluton, Variscan Iberian Belt)Cecilia Pérez-Soba, Carlos Villaseca, and Alfredo Fernández10.2138/am-2017-5895preprint
Mineral Precipitation and Dissolution in the KidneyMichael G Hill, Erich Königsberger, and Peter M May10.2138/am-2017-5778preprint
Bond Valence and Bond EnergyBarry R. Bickmore, Owen Craven, Matthew C. F. Wander, Hannah Checketts, Joshua Whitmer, Christopher Shurtleff, Kiersten Ernstrom, Charles Andros, and Hannah Thompson10.2138/am-2017-5933preprint
Fluorwavellite, Al3(PO4)2(OH)2F·5H2O, the fluorine analogue of wavelliteAnthony R. Kampf, Paul M. Adams, Henry Barwood, and Barbara P. Nash10.2138/am-2017-5948preprint
Luogufengite: A new nano-mineral of Fe2O3 polymorph with giant coercive fieldHuifang Xu, Seungyeol Lee, and Hongwu Xu10.2138/am-2017-5849preprint
Mudrock micro-fabric explored through charge contrast imagingJim Buckman, Carol Mahoney, Christian März, Thomas Wagner, and Vladimir Blanco10.2138/am-2017-5797CCBYNCNDpreprint
Polarized FTIR spectroscopic examination on hydroxylation in the minerals of the wolframite group, (Fe,Mn,Mg)[W,(Nb,Ta)][O,(OH)]4Dominik Talla, Anton Beran, Radek Škoda, and Zdeněk Losos10.2138/am-2017-5664preprint
Visible to Near-Infrared MSL/Mastcam Multispectral Imaging: Initial Results from Select High-Interest Science Targets within Gale Crater, MarsDanika F. Wellington, James F. Bell III, Jeffrey R. Johnson, Kjartan M. Kinch, Melissa S. Rice, Austin Godber, Bethany L. Ehlmann, Abigail A. Fraeman, Craig Hardgrove, and the MSL Science Team10.2138/am-2017-5760CCBYpreprint
Chromium Mineral EcologyChao Liu, Grethe Hystad, Joshua J. Golden, Daniel R. Hummer, Robert T. Downs, Shaunna M. Morrison, Jolyon P. Ralph, and Robert M. Hazen10.2138/am-2017-5900preprint
Fluvial transport of impact evidence from cratonic interior to passive margin: Vredefort-derived shocked zircon on the Atlantic coast of South AfricaStephanie D. Montalvo, Aaron J. Cavosie, Timmons M. Erickson'a, and Cristina Talavera10.2138/am-2017-5857CCBYNCNDpreprint
Hollisterite (Al3Fe), kryachkoite (Al,Cu)6(Fe,Cu), and stolperite (AlCu): Three new minerals from the Khatyrka CV3 carbonaceous chondriteChi Ma, Chaney Lin, Luca Bindi, and Paul J. Steinhardt10.2138/am-2017-5991preprint
Iron L3-edge spectroscopic evaluation of iron oxide and oxy-hydroxide coordinationBjorn P. von der Heydena, Alakendra N. Roychoudhurya, Tolek Tyliszczakc, and Satish C. B. Mynenib10.2138/am-2017-5805preprint
Nitrogen and Carbon Concentrations and Isotopic Compositions of the Silica Clathrate MelanophlogiteKristin E. Lazzeri, Gray E. Bebout, and Charles A. Geiger10.2138/am-2017-5876preprint
Chlorine and fluorine partitioning between apatite and sediment melt at 2.5 GPa, 800°C: A new experimentally derived thermodynamic modelHuijuan Li and Joerg Hermann10.2138/am-2017-5891preprint
Co-variability of S6+, S4+ and S2- in apatite 1 as a function of oxidation state – implications for a new oxybarometerBrian A. Konecke, Adrian Fiege, Adam C. Simon, Fleurice Parat, and André Stechern10.2138/am-2017-5907preprint
Sulfide-silicate textures in magmatic Ni-Cu-PGE sulfide ore deposits. 1. Disseminated and net-textured oresStephen J. Barnes, James E. Mungall, Margaux Le Vaillant, Belinda Godel, C. Michael Lesher, David Holwell, Peter C. Lightfoot, Nadya Krivolutskaya, and Bo Wei10.2138/am-2017-5754preprint
A new high pressure phase transition in clinoferrosilite: in situ single crystal X-ray diffraction studyAnna Pakhomova, Leyla Ismailova, Elena Bykova, Mazim Bykov, Tiziana Boffa Ballaran, and Leonid Dubrovinsky10.2138/am-2017-5853preprint
Chemical lattice expansion of natural zircon during the magmatic-hydrothermal evolution of A-type graniteLing-Jun Zeng, He-Cai Niu, Zhi-Wei Bao, and Wu-Bin Yang10.2138/am-2017-5840preprint
LA-Q-ICP-MS apatite U/Pb geochronology using common Pb in plagioclase: examples from layered mafic intrusionsCora. C. Wohlgemuth-Ueberwasser, Christian Tegner, and Victoria Pease10.2138/am-2017-5903preprint
Thermodynamics and crystal chemistry of rhomboclase, (H5O2)Fe(SO4)2·2H2O, and the phase (H3O)Fe(SO4)2Juraj Majzlan, Klaus-Dieter Grevel, Boris Kiefer, Ulla Gro Nielsen, Elisabeth Grube, Edgar Dachs, Artur Benisek, Mary Anne White, and Michel B. Johnson10.2138/am-2017-5909preprint
Hydrogen incorporation mechanisms in forsterite: New insights from 1H and 29Si NMR spectroscopy and first-principles calculationXianyu Xue, Masami Kanzaki, Doreen Turner, and Dominik Loroch10.2138/am-2017-5878preprint
Nickel variability in Hawaiian olivine: Evaluating the relative contributions from mantle and crustal processesKendra J. Lynn, Thomas Shea, and Michael O. Garcia10.2138/am-2017-5763preprint
On the mineralogy of the “Anthropocene Epoch”Robert M. Hazen, Edward S. Grew, Marcus J. Origlieri, and Robert T. Downs10.2138/am-2017-5875preprint
Phase relations of MgFe2O4 at conditions of the deep upper mantle and transition zoneLaura Uenver-Thiele, Alan B. Woodland, Tiziana Boffa Ballaran, Nobuyoshi Miyajima, and Dan J. Frost10.2138/am-2017-5871preprint
Representative size distributions of framboidal, euhedral and sunflower pyrite from high-resolution X-ray tomography and scanning electron microscopy analysesRaul Merinero, Víctor Cárdenes, Rosario Lunar, Matthieu N. Boone, and Veerle Cnudde10.2138/am-2017-5851preprint
Ab Initio Calculations of Uranium and Thorium Storage in CaSiO3-Perovskite in the Earth’s Lower MantleSamuel N. Perry, Jeffrey S. Pigott, and Wendy R. Panero10.2138/am-2017-5816preprint
Apatite in the dike-gabbro transition zone of mid-ocean ridge: Evidence for brine assimilation by axial melt lensChao Zhang, Juergen Koepke,Moritz Albrecht, Ingo Horn, and Francois Holtz10.2138/am-2017-5906preprint
Early warning signs for mining accidents: detecting crackling noiseUlrich Bismayer10.2138/am-2017-5969preprint
Igneous or Metamorphic? Hornblende Phenocrysts as Greenschist Facies Reaction Cells in the Half Dome Granodiorite, CaliforniaStephen C. Challener and Allen F. Glazner10.2138/am-2017-5864preprint
Melting, Crystallization and the Glass transition: Toward a Unified Description for Silicate Phase TransitionsH. Wayne Nesbitt, G. Michael Bancroft, Grant, S. Henderson, Pascal Richet, and Cedrick O’Shaughnessy10.2138/am-2017-5852preprint
New SIMS reference materials for measuring water in upper mantle mineralsKathryn M. Kumamoto, Jessica M. Warren, and Erik H. Hauri10.2138/am-2017-5863CCBYNCNDpreprint
Bridgmanite-like crystal structure in the novel Ti-rich phase synthesized at transition zone conditionLuca Bindi, Ekaterina Sirotkina, Andrey V. Bobrov, Michael J. Walter, Dmitry Pushcharovsky, and Tetsuo Irifune10.2138/am-2017-5937preprint
Bacterially mediated morphogenesis of struvite and its implication for phosphorus recoveryHan Li, Qi-Zhi Yao, Sheng-Hui Yu, Ya-Rong Huang, Xiang-Dong Chen, Sheng-Quan Fu, and Gen-Tao Zhou10.2138/am-2017-5687preprint
Effect of iron and trivalent cations on OH-defects in olivineMarc Blanchard, Jannick Ingrin, Etienne Balan, István Kovács, and Anthony C. Withers10.2138/am-2017-5777preprint
High-pressure high-temperature Raman spectroscopy of kerogen: relevance to subducted organic carbonLaurel B. Childress and Steven D. Jacobsen10.2138/am-2017-5719preprint
Highlights & Breakthroughs contribution for American Mineralogist on “Wishstone to Watchtower: Amorphous alteration of plagioclase-rich rocks in Gusev crater, Mars” by Stephen W. Ruff and Victoria E. HamiltonJoshua L. Bandfield10.2138/am-2017-5955preprint
Nuclear-blast induced nanotextures in quartz and zircon within TrinititeAaron J. Lussier, Sergei Rouvimov, Peter C. Burns, and Antonio Simonetti10.2138/am-2017-5739preprint
Calibration of Fe XANES for high-precision determination of Fe oxidation state in glasses: Comparison of new and existing results obtained at different synchrotron radiation sourcesAdrian Fiege, Philipp Ruprecht, Adam C. Simon, Aaron S. Bell, Jörg Göttlicher, Matt Newville, Tony Lanzirotti, and Gordon Moore10.2138/am-2017-5822preprint
Chromium influence on Mg-Al intracrystalline exchange in spinels and geothermometric implicationsFerdinando Bosi and Giovanni B. Andreozzi10.2138/am-2017-5821preprint
Effects of fluorine content on the elastic behavior of topaz [Al2SiO4(F,OH)2]Gianfranco Ulian and Giovanni Valdrè10.2138/am-2017-5668preprint
Raman spectroscopy and the inversion degree of natural Cr-bearing spinelsDavide Lenaz and Vanni Lughi10.2138/am-2017-5814preprint
Revisiting the electron microprobe method of spinel-olivine-orthopyroxene oxybarometry applied to spinel peridotitesFred A Davis, Elizabeth Cottrell, Suzanne K Birner, Jessica M Warren, and Oscar G Lopez10.2138/am-2017-5823preprint
Experimental tests on achieving equilibrium in synthetic fluid inclusions: results for scheelite, molybdenite and gold solubility at 800°C and 200 MPaInsa T. Derrey, Moritz Albrecht, Evgeniya Dupliy, Roman E. Botcharnikov, Ingo Horn, Malte Junge, Stefan Weyer, and François Holtz10.2138/am-2017-5869preprint
Geochemical and radiogenic isotope probes of Ischia volcano, Southern Italy: constraints on magma chamber dynamics and residence timeMartina Casalini, Riccardo Avanzinelli, Arnd Heumann, Sandro de Vita, Fabio Sansivero, Sandro Conticelli, and Simone Tommasini10.2138/am-2017-5724preprint
Kegginite, Pb3Ca3[AsV12O40(VO)]·20H2O, a new mineral with a novel ε-isomer of the Keggin anionAnthony R. Kampf, John M. Hughes, Barbara P. Nash, and Joe Marty10.2138/am-2017-5834preprint
Mineralogy and Chemistry of San Carlos High-Alkali Basalts: Analyses of Alteration with Application for Mars ExplorationBryné A. Hadnott, Bethany L. Ehlmann, and Bradley L. Jolliff10.2138/am-2017-5608preprint
SiC-dominated ultra-reduced mineral assemblage in carbonatitic xenoliths from the Dalihu basalt, Inner Mongolia, ChinaDetao He, Yongsheng Liu, Changgui Gao, Chunfei Chen, Zhaochu Hu, and Shan Gao10.2138/am-2017-5721preprint
An integrated EPMA-EBSD study of metamorphic histories recorded in garnetMasaki Enami, Takayoshi Nagaya, and Maw Maw Win10.2138/am-2017-5666preprint
Oxygen Isotope Geochemistry of Mafic Phenocrysts in Primitive Mafic Lavas from the Southernmost Cascade Range, CaliforniaS. J. Underwood and M. A. Clynne10.2138/am-2017-5588CCBYpreprint
Plastic deformation and post-deformation annealing in chromite: mechanisms and implicationsBiswajit Ghosh, Santanu Misra, and Tomoaki Morishita10.2138/am-2017-5709preprint
The S content of silicate melts at sulfide saturation: new experiments and a model incorporating the effects of sulfide compositionDuane J. Smythe, Bernard J. Wood, and Ekaterina S. Kiseeva10.2138/am-2017-5800CCBYpreprint
Wishstone to Watchtower: Amorphous alteration of plagioclase-rich rocks in Gusev crater, MarsSteven W. Ruff and Victoria E. Hamilton10.2138/am-2017-5618preprint
Ab initio study of the structure and stability of CaMg(CO3)2 at high pressureNatalia V. Solomatova and Paul D. Asimow10.2138/am-2017-5830preprint
Effect of composition on compressibility of skiagite-Fe-majorite garnetLeyla Ismailova, Maxim Bykov, Elena Bykova, Andrei Bobrov, Ilya Kupenko, Valerio Cerantola, Denis Vasiukov, Natalia Dubrovinskaia, Catherine McCammon, Michael Hanfland, Konstantin Glazyrin, Hanns-Peter Liermann, Alexander Chumakov, and Leonid Dubrovinsky10.2138/am-2017-5856preprint
Apatite trace element and isotope applications to petrogenesis and provenanceEmilie Bruand, Mike Fowler, Craig Storey, and James Darling10.2138/am-2017-5744preprint
Carbon as the dominant light element in the lunar coreEdgar S. Steenstra, Yanhao Lin, Nachiketa Rai, Max Jansen, and Wim van Westrenen10.2138/am-2017-5727preprint
Formation of phosphorus-rich olivine in Dar al Gani 978 carbonaceous chondrite through fluid-assisted metamorphismYang Li, Ai-Cheng Zhang, Jia-Ni Chen, Li-Xin Gu, and Ru-Cheng Wang10.2138/am-2017-5881preprint
Synthetic potassic-ferro-richterite: 2. Single-crystal HT-FTIR spectroscopy and hints on the deprotonation process of Fe-dominant amphibolesGiancarlo Della Ventura, Umberto Susta, Fabio Bellatreccia, Augusto Marcelli, Günther J. Redhammer, and Roberta Oberti10.2138/am-2017-5859preprint
Dissolving dolomite in a stable UHP mineral assemblage: evidence from Cal-Dol marbles of the Dora-Maira Massif (Italian Western Alps)Simona Ferrando, Chiara Groppo, Maria Luce Frezzotti, Daniele Castelli, and Alexander Proyer10.2138/am-2017-5761preprint
Formation of the ferruginous smectite SWa-1 by alteration of soil claysLeslie L. Baker10.2138/am-2017-5735preprint
Hydroxyl, Cl, and F Partitioning Between High-Silica Rhyolitic Melts-Apatite-Fluid(s) at 50-200 MPa and 700-1000 °CJames D. Webster, Beth A. Goldoff, Ryan N. Flesch, Patricia A. Nadeau, and Zachary W. Silbert10.2138/am-2017-5746preprint
Infrared Spectra of Carbonate Apatites: Interpretation of Complex Asymmetric Stretch (ν3) RegionMichael E. Fleet10.2138/am-2017-5704preprint
The crystal structure of nickelskutterudite, (Ni,Co,Fe)As3, and occupancy of the icosahedral cation site in the skutterudite groupBenjamin N. Schumer, Marcelo B. Andrade, Stanley H. Evans, and Robert T. Downs10.2138/am-2017-5615preprint
The replacement of a carbonate rock by fluorite: kinetics and microstructureElisabete Trindade Pedrosa, Lena Boeck, Christine V. Putnis, and Andrew Putnis10.2138/am-2017-5725preprint
Cobalt Mineral EcologyRobert M. Hazen, Grethe Hystad, Joshua J. Golden, Daniel R. Hummer, Chao Liu, Robert T. Downs, Shaunna M. Morrison, Jolyon Ralph, and Edward S. Grew10.2138/am-2017-5798preprint
Experimental investigation into the substitution mechanisms and solubility of Ti in garnetMichael R. Ackerson, E. Bruce Watson, Nicholas D. Tailby, and Frank S. Spear10.2138/am-2017-5632preprint
XAFS Spectroscopic Study of Ti Coordination in GarnetMichael R. Ackerson, Nicholas D. Tailby, and E. Bruce Watson10.2138/am-2017-5633preprint
The enigma of labradorite feldspar with incommensurately modulated structure, solvedShiyun Jin and Huifang Xu10.2138/am-2017-5807preprint
Fluids and trace element transport in subduction zonesHans Keppler10.2138/am-2017-5716preprint
Na-P Concentrations in High-Pressure Garnets: A Potentially Rich, But Risky P-T RepositoryWilliam Glassley10.2138/am-2016-5845preprint
Alunite on MarsKathleen C. Benison10.2138/am-2016-5802preprint
New evidence for lunar basalt metasomatism by underlying regolithJohn F. Pernet-Fisher10.2138/am-2016-5790preprint
Discovery of Alunite in Cross Crater, Terra Sirenum, Mars: Evidence for Acidic, Sulfurous WatersBethany L. Ehlmann, Gregg A. Swayze, Ralph E. Milliken, John F. Mustard, Roger N. Clark, Scott L. Murchie, George N. Breit, James J. Wray, Brigitte Gondet, Francois Poulet, John Carter, Wendy M. Calvin, William M. Benzel, and Kimberly D. Seelos10.2138/am-2016-5574preprint
Accurate predictions of iron redox state in silicate glasses: A multivariate approach using x-ray absorption spectroscopyM. Darby Dyar, Molly Mccanta, Elly Breves, Cj Carey, and Antonio Lanzirotti10.2138/am-2016-5555preprint
In-situ infrared spectroscopic studies of hydroxyl in amphiboles at high pressureElizabeth C. Thompson, Andrew J. Campbell, and Zhenxian Liu10.2138/am-2016-5465preprint
Reflectance Spectroscopy of Chromium-bearing Spinel with Application to Recent Orbital Data from the MoonK.B. Williams, C.R.M. Jackson, L.C. Cheek, K.L. Donaldson Hanna, S.W. Parman, C.M. Pieters, M.D. Dyar, and T.C. Prissel10.2138/am-2016-5535preprint
Temperature dependences of the hyperfine parameters of Fe2+ in FeTiO3 as determined by 57Fe-Mössbauer spectroscopyAntoine Van Alboom and Eddy De Grave10.2138/am-2016-5262preprint
Recognizing sulfate and phosphate complexes chemisorbed onto nanophase weathering products on Mars using in-situ and remote observationsElizabeth B. Rampe, Richard V. Morris, P. Douglas Archer, Jr., David G. Agresti, and Douglas W. Ming10.2138/am-2016-5408CCBYNCNDpreprint