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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
Carbocernaite from the Bear Lodge carbonatite, Wyoming: revised structure, zoning and rare-earth fractionation on a microscaleAnton R. Chakhmouradian, Mark A. Cooper, Ekaterina P. Reguir, and Meghan A. Moore10.2138/am-2017-6046preprint
NanoSIMS study of seismically deformed zircon: Evidence of Y, Yb, Ce and P re-distribution and resetting of radiogenic PbElizaveta Kovaleva and Urs Klötzli10.2138/am-2017-5975preprint
Study on structure variations of incommensurately modulated labradorite feldspars with different cooling historiesShiyun Jin and Huifang Xu10.2138/am-2017-6003preprint
Cu and Fe diffusion in rhyolitic melts during chalcocite dissolution: Implications for porphyry ore deposits and tektitesPeng Ni, Youxue Zhang, Adam Simon, and Joel Gagnon10.2138/am-2017-5885preprint
Evidence for post-depositional diffusional loss of hydrogen in quartz phenocryst fragments within ignimbritesTamás Biró, István János Kovács, Dávid Karátson, Roland Stalder, Edit Király, György Falus, Tamás Fancsik, and Judit K. Sándorné10.2138/am-2017-5861preprint
Field-based accounting of CO2 sequestration in ultramafic mine wastes using portable X-ray diffractionConnor C. Turvey, Siobhan A. Wilson, Jessica L. Hamilton, and Gordon Southam10.2138/am-2017-5953preprint
Majorite–olivine–high-Ca pyroxene assemblage in the shock-melt veins of Pervomaisky L6 chondriteIvan S. Bazhan, Konstantin D. Litasov, Eiji Ohtani, and Shin Ozawa10.2138/am-2017-5892preprint
Unraveling the presence of multiple plagioclase populations and identification of representative two dimensional sections using a statistical and numerical approachLilu Cheng, Fidel Costa, and Roberto Carniel10.2138/am-2017-5929CCBYNCNDpreprint
High-resolution geochemistry of volcanic ash highlights complex magma dynamics during the Eyjafjallajökull 2010 eruptionKathrin Laeger, Maurizio Petrelli, Daniele Andronico, Valeria Misiti, Piergiorgio Scarlato, Corrado Cimarelli, Jacopo Taddeucci, Elisabetta del Bello, and Diego Perugini10.2138/am-2017-5860preprint
Reaction pathways and textural aspects of the replacement of anhydrite by calcite at 25 ºCTeresa Roncal-Herrero, José Manuel Astilleros, Pieter Bots, Juan Diego Rodríguez-Blanco, Manuel Prieto, Liane G. Benning, and Lurdes Fernández-Díaz10.2138/am-2017-5963preprint
Shock-induced P-T conditions and formation mechanism of akimotoite-pyroxene glass assemblages in the Grove Mountains (GRV) 052082 (L6) meteoriteLu Feng, Masaaki Miyahara, Toshiro Nagase, Eiji Ohtani, Sen Hu, Ahmed El Goresy, and Yangting Lin10.2138/am-2017-5905preprint
The spin state of Fe3+ in lower mantle bridgmaniteRyosuke Sinmyo, Catherine McCammon, and Leonid Dubrovinsky10.2138/am-2017-5917preprint
Uranium bearing opals: Products of U-mobilization, diffusion and transformation processesMichael Schindler, Mostafa Fayek, Britanney Courchesne, Kurt Kyser, and Frank C. Hawthorne10.2138/am-2017-5700preprint
Constraints on aluminum and scandium substitution mechanisms in forsterite, periclase, and larnite: High resolution NMRRyan J. McCarty and Jonathan F. Stebbins10.2138/am-2017-5976preprint
Crystal structure of abelsonite, the only known crystalline geoporphyrinDaniel R. Hummer, Bruce C. Noll, Robert M. Hazen, and Robert T. Downs10.2138/am-2017-5927preprint
Multi-Stage formation of REE Minerals in the Palabora Carbonatite Complex, South AfricaR. Johannes Giebel, Christoph D.K. Gauert, Michael A.W. Marks, Gelu Costin, and Gregor Markl10.2138/am-2017-6004preprint
Phillipsite and Al-tobermorite mineral cements produced through low temperature water-rock reactions in Roman marine concreteMarie D. Jackson, Sean R. Mulcahy, Heng Chen, Yao Li, Qinfei Li, Piergiulio Cappelletti, and Hans-Rudolf Wenk10.2138/am-2017-5993CCBYpreprint
Quantifying and Correcting the Effects of Anisotropy in XANES Measurements of Chromium Valence in Olivine: Implications for a New Olivine OxybarometerAaron S. Bell, Charles Shearer, Paul Burger, Minghua Ren, Matthew Newville, and Antonio Lanzirotti10.2138/am-2017-5911preprint
The origin of needle-like rutile inclusions in natural gem corundum: a combined EPMA, LA-ICP-MS, and nanoSIMS investigationAaron C. Palke and Christopher M. Breeding10.2138/am-2017-5965preprint
Diamonds from the lower mantle?A.R. Thomson10.2138/am-2017-6061preprint
Thermodynamic investigation of uranyl vanadate minerals: implications for structural stabilityTyler L. Spano, Ewa A. Dzik, Melika Sharifironizi, Megan K. Dustin, Madison Turner, and Peter C. Burns10.2138/am-2017-5894preprint
Rowleyite, [Na(NH4,K)9Cl4][V5+,4+ 2(P,As)O8]6·n[H2O,Na,NH4,K,Cl], a new mineral with a microporous framework struAnthony R. Kampf, Mark A. Cooper, Barbara P. Nash, Thure E. Cerling, Joe Marty, Daniel R. Hummer, Aaron J. Celestian, Timothy P. Rose, and Thomas J. Trebisky10.2138/am-2017-5977preprint
Sperrylite saturation in magmatic sulfide melts: Implications for formation of PGE-bearing arsenides and sulfarsenidesLiping Bai, Sarah-Jane Barnes, and Don R. Baker10.2138/am-2017-5631preprint
Textures and high–field strength elements in hydrothermal magnetite from a skarn system: Implications for coupled dissolution–reprecipitation reactionsShuo Yin, Changqian Ma, and Paul T. Robinson10.2138/am-2017-5913preprint
Using mineral equilibria to estimate H2O activities in peridotites from the Western Gneiss Region of NorwayPatricia Kang, William M Lamb, and Martyn Drury10.2138/am-2017-5915preprint
Diamond, Moissanite and other unusual minerals in podiform chromitites from the Pozanti-Karsanti ophiolite, southern Turkey: implications for the deep mantle origin and ultra-reducing conditions in podiform chromititeDongyang Lian, Jingsui Yang, Yildirim Dilek, Weiwei Wu, Zhongming Zhang, Fahui Xiong, Fei Liu, and Wengda Zhou10.2138/am-2017-5850preprint
Dry annealing of metamict zircon: a differential scanning calorimetry studyRobert T. Pidgeon, Peter G. Chapman, Martin Danišík, and Alexander A. Nemchin10.2138/am-2017-5901preprint
Tightly bound water in smectitesArtur Kuligiewicz and Arkadiusz Derkowski10.2138/am-2017-5918preprint
Transformation of halloysite and kaolinite into beidellite under hydrothermal conditionHongping He, Shichao Ji, Qi Tao, Jianxi Zhu, Tianhu Chen, Xiaoliang Liang, Zhaohui Li, and Hailiang Dong10.2138/am-2017-5935preprint
Water transport by subduction: clues from garnet of Erzgebirge UHP eclogiteEsther Schmädicke and Jürgen Gose10.2138/am-2017-5920preprint
A comparison of olivine-melt thermometers based on DMg and DNi: the effects of melt composition, temperature and pressure with applications to MORBs and hydrous arc basaltsXiaofei Pu, Rebecca A. Lange, and Gordon Moore10.2138/am-2017-5879preprint
A Review and Update of Mantle Thermobarometry for Primitive Arc MagmasChristy B. Till10.2138/am-2017-5783preprint
Spin orientation in solid solution hematite-ilmeniteErik Brok, Cathrine Frandsen, Kim Lefmann, Suzanne McEnroe, Peter Robinson, Benjamin P. Burton, Thomas C. Hansen, and Richard Harrison10.2138/am-2017-5792CCBYpreprint
Using mineral geochemistry to decipher slab, mantle, and crustal input in the generation of high-Mg andesites and basaltic andesites from the northern Cascade ArcMay Sas, Susan M. DeBari, Michael A. Clynne, and Brian G. Rusk10.2138/am-2017-5756preprint
Water transfer during magma mixing events: Insights into crystal mush rejuvenation and melt extraction processesMattia Pistone, Jon Blundy, Richard A. Brooker, and EIMF10.2138/am-2017-5793preprint
Ca L2,3-edge near edge X-ray absorption fine structure of tricalcium aluminate, gypsum and calcium (sulfo)aluminate hydratesGuoqing Geng, Rupert J. Myers, Arthur L. D. Kilcoyne, Juyoung Ha, and Paulo J. M. Monteiro10.2138/am-2017-5670preprint
Compressibility and high-pressure structural behavior of Mg2Fe2O5Nicki C. Siersch, Tiziana Boffa Ballaran, Laura Uenver-Thiele, and Alan B. Woodland10.2138/am-2017-5837preprint
Experimental constraints on the stability of baddeleyite and zircon in carbonate- and silicate-carbonate meltsFernanda Gervasoni,; Stephan Klemme, Arno Rohrbach, Tobias Grützner, and Jasper Berndt10.2138/am-2017-5870preprint
Iron partitioning in natural lower-mantle minerals: Toward a chemically heterogeneous lower mantleFelix V. Kaminsky and Jung-Fu Lin10.2138/am-2017-5949preprint
Tourmaline-rich features in the Heemskirk and Pieman Heads granites from western Tasmania, Australia: Characteristics, origins, and implications for tin mineralizationWei Hong, David R. Cooke, Lejun Zhang, Nathan Fox, and Jay Thompson10.2138/am-2017-5838preprint
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
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
New SIMS reference materials for measuring water in upper mantle mineralsKathryn M. Kumamoto, Jessica M. Warren, and Erik H. Hauri10.2138/am-2017-5863CCBYNCNDpreprint
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
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
Single-track length measurements of step-etched fission tracks in Durango apatite: Vorsprung durch TechnikRaymond Jonckheere, Murat T. Tamer, Florentine Wauschkuhn, Astian Wauschkuhn, and Lothar Ratschbacher10.2138/am-2017-5988preprint