Subjects -> MINES AND MINING INDUSTRY (Total: 81 journals)
Showing 1 - 42 of 42 Journals sorted alphabetically
American Mineralogist     Hybrid Journal   (Followers: 16)
Applied Earth Science : Transactions of the Institutions of Mining and Metallurgy     Hybrid Journal   (Followers: 4)
Archives of Mining Sciences     Open Access   (Followers: 3)
AusiMM Bulletin     Full-text available via subscription   (Followers: 1)
BHM Berg- und Hüttenmännische Monatshefte     Hybrid Journal   (Followers: 2)
Canadian Mineralogist     Full-text available via subscription   (Followers: 7)
Clay Minerals     Hybrid Journal   (Followers: 9)
Clays and Clay Minerals     Hybrid Journal   (Followers: 5)
Coal Science and Technology     Full-text available via subscription   (Followers: 3)
Contributions to Mineralogy and Petrology     Hybrid Journal   (Followers: 14)
Environmental Geochemistry and Health     Hybrid Journal   (Followers: 2)
European Journal of Mineralogy     Hybrid Journal   (Followers: 14)
Exploration and Mining Geology     Full-text available via subscription   (Followers: 3)
Extractive Industries and Society     Hybrid Journal   (Followers: 2)
Gems & Gemology     Full-text available via subscription   (Followers: 2)
Geology of Ore Deposits     Hybrid Journal   (Followers: 5)
Geomaterials     Open Access   (Followers: 3)
Geotechnical and Geological Engineering     Hybrid Journal   (Followers: 9)
Ghana Mining Journal     Full-text available via subscription   (Followers: 3)
Gold Bulletin     Hybrid Journal   (Followers: 2)
Inside Mining     Full-text available via subscription  
International Journal of Coal Geology     Hybrid Journal   (Followers: 4)
International Journal of Coal Preparation and Utilization     Hybrid Journal   (Followers: 2)
International Journal of Coal Science & Technology     Open Access   (Followers: 1)
International Journal of Hospitality & Tourism Administration     Hybrid Journal   (Followers: 15)
International Journal of Mineral Processing     Hybrid Journal   (Followers: 8)
International Journal of Minerals, Metallurgy, and Materials     Hybrid Journal   (Followers: 11)
International Journal of Mining and Geo-Engineering     Open Access   (Followers: 4)
International Journal of Mining and Mineral Engineering     Hybrid Journal   (Followers: 8)
International Journal of Mining Engineering and Mineral Processing     Open Access   (Followers: 6)
International Journal of Mining Science and Technology     Open Access   (Followers: 4)
International Journal of Mining, Reclamation and Environment     Hybrid Journal   (Followers: 6)
International Journal of Rock Mechanics and Mining Sciences     Hybrid Journal   (Followers: 9)
Journal of Analytical and Numerical Methods in Mining Engineering     Open Access  
Journal of Applied Geophysics     Hybrid Journal   (Followers: 17)
Journal of Central South University     Hybrid Journal   (Followers: 1)
Journal of China Coal Society     Open Access  
Journal of China University of Mining and Technology     Full-text available via subscription   (Followers: 1)
Journal of Convention & Event Tourism     Hybrid Journal   (Followers: 6)
Journal of Geology and Mining Research     Open Access   (Followers: 10)
Journal of Human Resources in Hospitality & Tourism     Hybrid Journal   (Followers: 9)
Journal of Materials Research and Technology     Open Access   (Followers: 2)
Journal of Metamorphic Geology     Hybrid Journal   (Followers: 17)
Journal of Mining Institute     Open Access  
Journal of Mining Science     Hybrid Journal   (Followers: 5)
Journal of Quality Assurance in Hospitality & Tourism     Hybrid Journal   (Followers: 6)
Journal of Sustainable Mining     Open Access   (Followers: 3)
Journal of the Southern African Institute of Mining and Metallurgy     Open Access   (Followers: 6)
Lithology and Mineral Resources     Hybrid Journal   (Followers: 4)
Lithos     Hybrid Journal   (Followers: 12)
Mine Water and the Environment     Hybrid Journal   (Followers: 5)
Mineral Economics     Hybrid Journal   (Followers: 2)
Mineral Processing and Extractive Metallurgy : Transactions of the Institutions of Mining and Metallurgy     Hybrid Journal   (Followers: 14)
Mineral Processing and Extractive Metallurgy Review     Hybrid Journal   (Followers: 5)
Mineralium Deposita     Hybrid Journal   (Followers: 5)
Mineralogia     Open Access   (Followers: 2)
Mineralogical Magazine     Hybrid Journal   (Followers: 1)
Mineralogy and Petrology     Hybrid Journal   (Followers: 5)
Minerals     Open Access   (Followers: 2)
Minerals & Energy - Raw Materials Report     Hybrid Journal   (Followers: 1)
Minerals Engineering     Hybrid Journal   (Followers: 14)
Mining Engineering     Full-text available via subscription   (Followers: 7)
Mining Journal     Full-text available via subscription   (Followers: 4)
Mining Report     Hybrid Journal   (Followers: 3)
Mining Technology : Transactions of the Institutions of Mining and Metallurgy     Hybrid Journal   (Followers: 4)
Mining, Metallurgy & Exploration     Hybrid Journal  
Natural Resources & Engineering     Hybrid Journal  
Natural Resources Research     Hybrid Journal   (Followers: 4)
Neues Jahrbuch für Mineralogie - Abhandlungen     Full-text available via subscription   (Followers: 1)
Physics and Chemistry of Minerals     Hybrid Journal   (Followers: 4)
Podzemni Radovi     Open Access  
Rangeland Journal     Hybrid Journal   (Followers: 4)
Réalités industrielles     Full-text available via subscription  
Rem : Revista Escola de Minas     Open Access  
Resources Policy     Hybrid Journal   (Followers: 4)
Reviews in Mineralogy and Geochemistry     Hybrid Journal   (Followers: 5)
Revista del Instituto de Investigación de la Facultad de Ingeniería Geológica, Minera, Metalurgica y Geográfica     Open Access  
Rock Mechanics and Rock Engineering     Hybrid Journal   (Followers: 9)
Rocks & Minerals     Hybrid Journal   (Followers: 5)
Rudarsko-geološko-naftni Zbornik     Open Access  
Transactions of Nonferrous Metals Society of China     Hybrid Journal   (Followers: 9)
Similar Journals
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European Journal of Mineralogy
Journal Prestige (SJR): 0.543
Citation Impact (citeScore): 1
Number of Followers: 14  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0935-1221 - ISSN (Online) 1617-4011
Published by Copernicus Publications Homepage  [62 journals]
  • Freitalite, C14H10, a new aromatic hydrocarbon mineral from Freital,
           Saxony, Germany
    • Abstract: Freitalite, C14H10, a new aromatic hydrocarbon mineral from Freital, Saxony, Germany
      Thomas Witzke, Martin Schreyer, Benjamin Brandes, René Csuk, and Herbert Pöllmann
      Eur. J. Mineral., 33, 1–8, https://doi.org/10.5194/ejm-33-1-2021, 2021
      The new mineral species freitalite, C14H10, corresponding to the aromatic hydrocarbon anthracene, has been discovered on the mine dump of the Königin Carola shaft (Paul Berndt Mine), Freital, near Dresden, Saxony, Germany. Freitalite is a product of pyrolysis of coal and was formed by sublimation from a gas phase. The mineral was identified by several analytical methods.
      PubDate: Wed, 20 Jan 2021 22:00:47 +010
      DOI: 10.5194/ejm-33-1-2021 2021

       
  • Grain boundary diffusion and its relation to segregation of multiple
           elements in yttrium aluminum garnet
    • Abstract: Grain boundary diffusion and its relation to segregation of multiple elements in yttrium aluminum garnet
      Joana Polednia, Ralf Dohmen, and Katharina Marquardt
      Eur. J. Mineral., 32, 675–696, https://doi.org/10.5194/ejm-32-675-2020, 2020
      Grain boundary diffusion is orders of magnitude faster compared to volume diffusion. We studied this fast transport process in a well-defined garnet grain boundary. State-of-the-art microscopy was used for quantification. A dedicated numerical diffusion model shows that iron diffusion requires the operation of two diffusion modes, one fast, one slow. We conclude that impurity bulk diffusion in garnet aggregates is always dominated by grain boundary diffusion.
      PubDate: Wed, 23 Dec 2020 07:40:40 +010
      DOI: 10.5194/ejm-32-675-2020 2020

       
  • Corrigendum to “Natural mullites: chemical composition, crystal
           structure, and optical properties” published in Eur. J. Mineral., 31,
           353–367, 2019
    • Abstract: Corrigendum to “Natural mullites: chemical composition, crystal structure, and optical properties” published in Eur. J. Mineral., 31, 353–367, 2019
      Stephan Lenz, Johannes Birkenstock, Lennart A. Fischer, Willi Schüller, Hartmut Schneider, and Reinhard X. Fischer
      Eur. J. Mineral., 32, 673–673, https://doi.org/10.5194/ejm-32-673-2020, 2020

      PubDate: Thu, 17 Dec 2020 09:19:18 +010
      DOI: 10.5194/ejm-32-673-2020 2020

       
  • Reaction progress of clay minerals and carbonaceous matter in a contact
           metamorphic aureole (Torres del Paine intrusion, Chile)
    • Abstract: Reaction progress of clay minerals and carbonaceous matter in a contact metamorphic aureole (Torres del Paine intrusion, Chile)
      Annette Süssenberger, Susanne Theodora Schmidt, Florian H. Schmidt, and Manuel F. G. Weinkauf
      Eur. J. Mineral., 32, 653–671, https://doi.org/10.5194/ejm-32-653-2020, 2020
      This study reports on reaction processes in a transition zone from contact to regional metamorphism by using Raman spectroscopy on carbonaceous matter (RSCM), illite “crystallinity” (Kübler index, KI), chlorite geothermometry, and thermal modeling. The thermal effect due to the emplacement of the Torres del Paine intrusion (TPI, assembly time of ca. 150 kyr) had different consequences for inorganic and organic compounds of the host rock. The thermal alteration of the pre-intrusive regional metamorphosed host rock is documented by elevated RSCM temperatures, high-temperature chlorite generations, and the appearance of epidote and retrograde Fe-rich chlorite. Microprobe analysis on chlorite indicates incomplete re-equilibration as evidenced by various chlorite populations of individual contact metamorphic samples. This study indicates that the maturity of organic matter is the most reliable and unequivocal indicator on timescales of several thousand years to determine the lateral extension of the TPI contact aureole. Raman geothermometry reveals that the lateral extension of the contact-influenced zone expands up to a distance of 1.5 km and, thus, expands to ca. 1.1 km further out than the macroscopically mappable hornfels contact aureole. The best match between measured (Raman geothermometry) and calculated (thermal modeling) ΔTmax values (ΔT=54 ∘C) is achieved with a total intrusion assembly time of 150 kyr, a magmatic temperature of 800 ∘C, a two-batch model (batch repose time of 10 kyr) with five pulses per batch, short heating durations (3 kyr), and long pulse repose times (15 kyr).
      PubDate: Wed, 09 Dec 2020 13:41:40 +010
      DOI: 10.5194/ejm-32-653-2020 2020

       
  • IMA Commission on New Minerals, Nomenclature and Classification (CNMNC)
           – Newsletter 58
    • Abstract: IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 58
      Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
      Eur. J. Mineral., 32, 645–651, https://doi.org/10.5194/ejm-32-645-2020, 2020

      PubDate: Tue, 08 Dec 2020 14:34:39 +010
      DOI: 10.5194/ejm-32-645-2020 2020

       
  • Gobelinite, the Co analogue of ktenasite from Cap Garonne, France, and
           Eisenzecher Zug, Germany
    • Abstract: Gobelinite, the Co analogue of ktenasite from Cap Garonne, France, and Eisenzecher Zug, Germany
      Stuart J. Mills, Uwe Kolitsch, Georges Favreau, William D. Birch, Valérie Galea-Clolus, and Johannes Markus Henrich
      Eur. J. Mineral., 32, 637–644, https://doi.org/10.5194/ejm-32-637-2020, 2020
      The new mineral gobelinite, ideally CoCu4(SO4)2(OH)6⚫6H2O, is a new member of the ktenasite group and the Co analogue of ktenasite, ZnCu4(SO4)2(OH)6⚫6H2O. It occurs at Cap Garonne (CG), Var, France (type locality), and Eisenzecher Zug (EZ), Siegerland, North Rhine-Westphalia, Germany (cotype locality). The mineral forms pale green, bluish green or greyish green, blocky to thin, lath-like crystals. They are transparent and non-fluorescent, with a vitreous, sometimes also pearly, lustre and a white streak having a pale-green cast. Mohs hardness is about 2.5. The crystals are brittle with an irregular fracture; no cleavage was observed. D(meas.) is 2.95(2) and D(calc.) is 2.907 g cm−3 (for empirical formula, CG). Common associates are brochantite and various other hydrated metal sulfates. Electron-microprobe analyses of the CG material yielded (wt. %) CuO 42.45, CoO 6.58, NiO 3.37, ZnO 3.14, SO3 22.12, and H2O 22.62 (calculated on structural grounds), and total = 100.30 wt. %, giving the empirical formula (based on 20 O atoms) (Co0.63Ni0.32Zn0.28Cu3.83)Σ5.06S1.98O20H18.00. The simplified formula is (Co,Ni)(Cu,Zn)4(SO4)2(OH)6⚫6H2O, and the endmember formula is CoCu4(SO4)2(OH)6⚫6H2O. Scanning electron microscopy–energy dispersive X-ray spectroscopy (SEM–EDS) analyses of the (Zn-free) EZ material gave the simplified average formula (Co0.92Ni0.21Mg0.01Cu3.79)Σ4.93(SO4)2.08(OH)6⚫6H2O. Optically, gobelinite (CG) is biaxial negative, with α=1.576(2), β=1.617(2) and γ=1.630(2); 2Vmeas=58(4)∘ and 2Vcalc=57.5∘. Dispersion is weak, r>v; orientation is X=β, Y=γ and Z≈α, with strong pleochroism X equaling colourless, Y equaling green and Z equaling pale green. The mineral is monoclinic, space group P21∕c, with a=5.599(1), b=6.084(1), c=23.676(5) Å, β=95.22(3)∘ and V=803.2(3) Å3 (at 100 K; CG) and a=5.611(1), b=6.103(1), c=23.808(5) Å, β=95.18(3)∘ and V=811.9(3) Å3 (at 298 K; EZ), respectively (Z=2). The eight strongest measured powder X-ray diffraction lines (d in Å (I) hkl (CG material)) are 11.870 (100) 002, 5.924 (40) 004, 4.883 (10) 102, 4.825 (15) 013, 3.946 (15) 006, 2.956 (15) 008, 2.663 (20) 202 and 2.561 (15) 1‾23. Single-crystal structure determinations gave R1=0.0310 (CG) and 0.0280 (EZ). The atomic arrangement is based on brucite-like sheets formed from edge-sharing, Jahn–Teller-distorted (4+2 coordination) CuO6 octahedra. These sheets are decorated on both sides with SO4 tetrahedra and linked via hydrogen bonds to interstitial, fairly regular Co(H2O)6 octahedra. The name alludes to the Old French word gobelin, equivalent to the German word kobold, from which the designation of the element cobalt was derived.
      PubDate: Wed, 25 Nov 2020 09:05:41 +010
      DOI: 10.5194/ejm-32-637-2020 2020

       
  • Contribution to the crystal chemistry of lead-antimony sulfosalts:
           systematic Pb-versus-Sb crossed substitution in the plagionite homologous
           series, Pb2N − 1(Pb1 − xSbx)2(Sb1 − xPbx)2Sb6S13+2N
    • Abstract: Contribution to the crystal chemistry of lead-antimony sulfosalts: systematic Pb-versus-Sb crossed substitution in the plagionite homologous series, Pb2N − 1(Pb1 − xSbx)2(Sb1 − xPbx)2Sb6S13+2N
      Yves Moëlo and Cristian Biagioni
      Eur. J. Mineral., 32, 623–635, https://doi.org/10.5194/ejm-32-623-2020, 2020
      The plagionite group is a family of complex sulfides (lead-antimony sulfosalts) encountered in various Pb-Cu-Zn ore deposits. Analysis of these crystal structures confirms a systematic Pb-versus-Sb substitution in two adjacent cation positions. Such a substitution varies according not only to the Pb / Sb ratio of each member but also, apparently, to the kinetics of crystallization. Re-examination of a Pb-free synthetic derivative permitted its redefinition as a Na-Sb sulfosalt.
      PubDate: Sat, 14 Nov 2020 09:57:04 +010
      DOI: 10.5194/ejm-32-623-2020 2020

       
  • Investigating crystal orientation patterns of foraminiferal tests by
           electron backscatter diffraction analysis
    • Abstract: Investigating crystal orientation patterns of foraminiferal tests by electron backscatter diffraction analysis
      Stephanie Pabich, Christian Vollmer, and Nikolaus Gussone
      Eur. J. Mineral., 32, 613–622, https://doi.org/10.5194/ejm-32-613-2020, 2020
      Electron backscatter diffraction (EBSD) is a powerful tool to visualize and differentiate between foraminiferal test structures, by providing information on crystal orientation and crystal sizes. This can be used to trace diagenetic recrystallization, altering geochemical proxy signals. The sediment samples from a core from the equatorial Pacific used here, spanning the last 45 Myr, showed no evidence for foraminiferal recrystallization, highlighting the suitability as geochemical proxy archive.
      PubDate: Fri, 13 Nov 2020 09:57:04 +010
      DOI: 10.5194/ejm-32-613-2020 2020

       
  • Contaminating melt flow in magmatic peridotites from the lower continental
           crust (Rocca d'Argimonia sequence, Ivrea–Verbano Zone)
    • Abstract: Contaminating melt flow in magmatic peridotites from the lower continental crust (Rocca d'Argimonia sequence, Ivrea–Verbano Zone)
      Marta Antonicelli, Riccardo Tribuzio, Tong Liu, and Fu-Yuan Wu
      Eur. J. Mineral., 32, 587–612, https://doi.org/10.5194/ejm-32-587-2020, 2020
      We present a petrological⁠–geochemical investigation of peridotites of magmatic origin from the Ivrea⁠–Verbano Zone (Italian Alps), a large-scale section of lower continental crust. The main purpose is to provide new insights into the processes governing the evolution of primitive mantle magmas. We propose that studied peridotites were formed by reaction of a melt-poor olivine-rich crystal mush, or a pre-existing peridotite, with upward-migrating melts possessing a substantial crustal component.
      PubDate: Wed, 04 Nov 2020 13:17:56 +010
      DOI: 10.5194/ejm-32-587-2020 2020

       
  • Equation of state and high-pressure phase behaviour of SrCO3
    • Abstract: Equation of state and high-pressure phase behaviour of SrCO3
      Nicole Biedermann, Elena Bykova, Wolfgang Morgenroth, Ilias Efthimiopoulos, Jan Mueller, Georg Spiekermann, Konstantin Glazyrin, Anna Pakhomova, Karen Appel, and Max Wilke
      Eur. J. Mineral., 32, 575–586, https://doi.org/10.5194/ejm-32-575-2020, 2020
      Carbonates play a key role in the chemistry and dynamics of our planet. The role of SrCO3 in the deep mantle has received little attention due to its low abundance. However, knowing the high-pressure phase behaviour of natural carbonates across its full compositional range is essential to evaluate effects of chemical substitution in the system of deep-Earth carbonates. We performed powder and single-crystal X-ray diffraction up to 49 GPa and observed a phase transition in SrCO3 at around 26 GPa.
      PubDate: Tue, 03 Nov 2020 13:17:56 +010
      DOI: 10.5194/ejm-32-575-2020 2020

       
  • Two new minerals, badengzhuite, TiP, and zhiqinite, TiSi2, from the Cr-11
           chromitite orebody, Luobusa ophiolite, Tibet, China: is this evidence for
           super-reduced mantle-derived fluids'
    • Abstract: Two new minerals, badengzhuite, TiP, and zhiqinite, TiSi2, from the Cr-11 chromitite orebody, Luobusa ophiolite, Tibet, China: is this evidence for super-reduced mantle-derived fluids'
      Fahui Xiong, Xiangzhen Xu, Enrico Mugnaioli, Mauro Gemmi, Richard Wirth, Edward S. Grew, Paul T. Robinson, and Jingsui Yang
      Eur. J. Mineral., 32, 557–574, https://doi.org/10.5194/ejm-32-557-2020, 2020
      Two new nanominerals: titanium monophosphide and titanium disilicide, formed at pressures of Earth’s upper mantle by the action of methane and hydrogen from the mantle on basaltic melts in the Luobusa ophiolite (Tibet). The minerals were characterized by 3D electron diffraction, which can solve the crystal structures of phases less than a micrometer in size. The results contribute to our understanding of deeply subducted crustal rocks and their exhumation back to the Earth's surface.
      PubDate: Mon, 02 Nov 2020 13:45:39 +010
      DOI: 10.5194/ejm-32-557-2020 2020

       
  • Structural study of decrespignyite-(Y), a complex yttrium rare earth
           copper carbonate chloride, by three-dimensional electron and synchrotron
           powder diffraction
    • Abstract: Structural study of decrespignyite-(Y), a complex yttrium rare earth copper carbonate chloride, by three-dimensional electron and synchrotron powder diffraction
      Jordi Rius, Fernando Colombo, Oriol Vallcorba, Xavier Torrelles, Mauro Gemmi, and Enrico Mugnaioli
      Eur. J. Mineral., 32, 545–555, https://doi.org/10.5194/ejm-32-545-2020, 2020
      The crystal structure of the mineral decrespignyite-(Y) from the Paratoo copper mine (South Australia) has been obtained by applying δ recycling direct methods to 3D electron diffraction data followed by Rietveld refinements of synchrotron powder diffraction data. Its structure mainly shows a metal layer sequence of polyhedra interconnecting hexanuclear (octahedral) oxo-hydroxo yttrium clusters along a ternary axis or tilted clusters to hetero-tetranuclear ones hosting Cu, Y and rare earths.
      PubDate: Fri, 23 Oct 2020 08:33:46 +020
      DOI: 10.5194/ejm-32-545-2020 2020

       
  • Corona formation around monazite and xenotime during greenschist-facies
           metamorphism and deformation
    • Abstract: Corona formation around monazite and xenotime during greenschist-facies metamorphism and deformation
      Felix Hentschel, Emilie Janots, Claudia A. Trepmann, Valerie Magnin, and Pierre Lanari
      Eur. J. Mineral., 32, 521–544, https://doi.org/10.5194/ejm-32-521-2020, 2020
      We analysed apatite–allanite/epidote coronae around monazite and xenotime in deformed Permian pegmatites from the Austroalpine basement. Microscopy, chemical analysis and EBSD showed that these coronae formed by dissolution–precipitation processes during deformation of the host rocks. Dating of monazite and xenotime confirmed the magmatic origin of the corona cores, while LA-ICP-MS dating of allanite established a date of ~ 60 Ma for corona formation and deformation in the Austroalpine basement.
      PubDate: Thu, 15 Oct 2020 14:26:45 +020
      DOI: 10.5194/ejm-32-521-2020 2020

       
  • Low-temperature infrared spectrum and atomic-scale structure of hydrous
           defects in diopside
    • Abstract: Low-temperature infrared spectrum and atomic-scale structure of hydrous defects in diopside
      Etienne Balan, Lorenzo Paulatto, Jia Liu, and Jannick Ingrin
      Eur. J. Mineral., 32, 505–520, https://doi.org/10.5194/ejm-32-505-2020, 2020
      The atomic-scale geometry of hydrous defects in diopside is still imperfectly known despite their contribution to the Earth's water cycle. Their OH-stretching vibrations lead to a variety of infrared absorption bands. Low-temperature infrared spectroscopy makes it possible to resolve additional bands in the spectra of gem-quality natural samples. Theoretical results obtained at the density functional theory level support the assignment of the observed bands to specific atomic-scale models.
      PubDate: Wed, 14 Oct 2020 14:26:45 +020
      DOI: 10.5194/ejm-32-505-2020 2020

       
  • Book review: Planetary Geoscience
    • Abstract: Book review: Planetary Geoscience
      Camille Cartier
      Eur. J. Mineral., 32, 501–503, https://doi.org/10.5194/ejm-32-501-2020, 2020

      PubDate: Tue, 13 Oct 2020 11:01:35 +020
      DOI: 10.5194/ejm-32-501-2020 2020

       
  • IMA Commission on New Minerals, Nomenclature and Classification (CNMNC)
           – Newsletter 57
    • Abstract: IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 57
      Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
      Eur. J. Mineral., 32, 495–499, https://doi.org/10.5194/ejm-32-495-2020, 2020

      PubDate: Mon, 12 Oct 2020 11:01:35 +020
      DOI: 10.5194/ejm-32-495-2020 2020

       
  • Wumuite (KAl0.33W2.67O9) – a new mineral with an HTB-type structure from
           the Panzhihua–Xichang region in China
    • Abstract: Wumuite (KAl0.33W2.67O9) – a new mineral with an HTB-type structure from the Panzhihua–Xichang region in China
      Yuan Xue, Guowu Li, and Yingmei Xie
      Eur. J. Mineral., 32, 483–494, https://doi.org/10.5194/ejm-32-483-2020, 2020
      Wumuite, ideally KAl0.33W2.67O9 with a hexagonal tungsten bronze (HTB)-type structure, is another new mineral containing potassium and tungsten found in the Pan–Xi region in China after tewite was discovered. In this study, artificial synthetic experiments have been conducted to explore the formation process of wumuite and tewite. Wumuite was speculated to be formed by a metasomatic reaction between W-rich hydrothermal fluids and the potassium feldspar in the monzonite.
      PubDate: Wed, 07 Oct 2020 09:13:34 +020
      DOI: 10.5194/ejm-32-483-2020 2020

       
  • In situ micro-FTIR spectroscopic investigations of synthetic ammonium
           phengite under pressure and temperature
    • Abstract: In situ micro-FTIR spectroscopic investigations of synthetic ammonium phengite under pressure and temperature
      Nada Abdel-Hak, Bernd Wunder, Ilias Efthimiopoulos, and Monika Koch-Müller
      Eur. J. Mineral., 32, 469–482, https://doi.org/10.5194/ejm-32-469-2020, 2020
      The structural response of the NH4+ molecule to temperature and pressure changes is studied in ammonium phengite. The symmetry of the molecule is lowered by increasing P or decreasing T; the type and mechanism of this lowered symmetry is different in both cases. Devolatilisation (NH4+ and OH loss) of ammonium phengite is studied as well. This study confirms the wide stability range of phengite and its volatiles and thus has important implications for N and H recycling into the deep Earth.
      PubDate: Fri, 18 Sep 2020 15:34:37 +020
      DOI: 10.5194/ejm-32-469-2020 2020

       
  • Theoretical infrared spectra of OH defects in corundum (α-Al2O3)
    • Abstract: Theoretical infrared spectra of OH defects in corundum (α-Al2O3)
      Etienne Balan
      Eur. J. Mineral., 32, 457–467, https://doi.org/10.5194/ejm-32-457-2020, 2020
      Corundum is an important oxide mineral which can contain low amounts of hydrogen-bearing structural defects. These defects are observed by infrared spectroscopy, but their atomic-scale geometry is still uncertain. Here, a theoretical approach makes it possible to relate most of the observed infrared bands to specific atomic configurations, highlighting the key role of other chemical impurities and defect clustering in the high-temperature incorporation of hydrogen in corundum.
      PubDate: Fri, 11 Sep 2020 08:54:32 +020
      DOI: 10.5194/ejm-32-457-2020 2020

       
  • Luxembourgite, AgCuPbBi4Se8, a new mineral species from Bivels, Grand
           Duchy of Luxembourg
    • Abstract: Luxembourgite, AgCuPbBi4Se8, a new mineral species from Bivels, Grand Duchy of Luxembourg
      Simon Philippo, Frédéric Hatert, Yannick Bruni, Pietro Vignola, and Jiří Sejkora
      Eur. J. Mineral., 32, 449–455, https://doi.org/10.5194/ejm-32-449-2020, 2020
      Luxembourgite, ideally AgCuPbBi4Se8, is a new selenide discovered at Bivels, Grand Duchy of Luxembourg. The mineral forms tiny fibres deposited on dolomite crystals. Its crystal structure is similar to those of litochlebite and watkinsonite, and can be described as an alternation of two types of anionic layers: a pseudotetragonal layer four atoms thick and a pseudohexagonal layer one atom thick. The species named for the city of Luxembourg, close to its locality of discovery.
      PubDate: Wed, 12 Aug 2020 13:54:15 +020
      DOI: 10.5194/ejm-32-449-2020 2020

       
 
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