Articles | Volume 36, issue 5
https://doi.org/10.5194/ejm-36-797-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-36-797-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Crystal chemistry of K-tourmalines from the Kumdy-Kol microdiamond deposit, Kokchetav Massif, Kazakhstan
Beatrice Celata
CORRESPONDING AUTHOR
Department of Earth Sciences, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
Department of Energy Technologies and Renewable Sources, ENEA Casaccia Research Center, S. Maria di Galeria, 00123 Rome, Italy
Ferdinando Bosi
CORRESPONDING AUTHOR
Department of Earth Sciences, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
Kira A. Musiyachenko
Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences (RAS), Novosibirsk, Russian Federation
Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, V6T, Canada
Andrey V. Korsakov
Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences (RAS), Novosibirsk, Russian Federation
Giovanni B. Andreozzi
Department of Earth Sciences, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
Related authors
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Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 36, 1005–1010, https://doi.org/10.5194/ejm-36-1005-2024, https://doi.org/10.5194/ejm-36-1005-2024, 2024
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 36, 917–923, https://doi.org/10.5194/ejm-36-917-2024, https://doi.org/10.5194/ejm-36-917-2024, 2024
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 36, 599–604, https://doi.org/10.5194/ejm-36-599-2024, https://doi.org/10.5194/ejm-36-599-2024, 2024
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 36, 525–528, https://doi.org/10.5194/ejm-36-525-2024, https://doi.org/10.5194/ejm-36-525-2024, 2024
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 36, 361–367, https://doi.org/10.5194/ejm-36-361-2024, https://doi.org/10.5194/ejm-36-361-2024, 2024
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 36, 165–172, https://doi.org/10.5194/ejm-36-165-2024, https://doi.org/10.5194/ejm-36-165-2024, 2024
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 35, 1073–1078, https://doi.org/10.5194/ejm-35-1073-2023, https://doi.org/10.5194/ejm-35-1073-2023, 2023
Daniel Atencio, Andrezza A. Azzi, Kai Qu, Ritsuro Miyawaki, Ferdinando Bosi, and Koichi Momma
Eur. J. Mineral., 35, 1027–1030, https://doi.org/10.5194/ejm-35-1027-2023, https://doi.org/10.5194/ejm-35-1027-2023, 2023
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This article introduces a new nomenclature system for the cerite group minerals. This system was necessary to allow the nomenclature of new species of minerals that are currently being described.
Ian E. Grey, Stephanie Boer, Colin M. MacRae, Nicholas C. Wilson, William G. Mumme, and Ferdinando Bosi
Eur. J. Mineral., 35, 909–919, https://doi.org/10.5194/ejm-35-909-2023, https://doi.org/10.5194/ejm-35-909-2023, 2023
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The paper describes the formal establishment of the paulkerrite group of minerals and its nomenclature. It includes the application of a site-merging procedure, coupled with a site-total-charge analysis, to obtain unambiguous end-member formulae. Application of the procedure has resulted in the revision of the end-member formulae for several of the group members.
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 35, 891–895, https://doi.org/10.5194/ejm-35-891-2023, https://doi.org/10.5194/ejm-35-891-2023, 2023
Alessandra Altieri, Federico Pezzotta, Giovanni B. Andreozzi, Henrik Skogby, and Ferdinando Bosi
Eur. J. Mineral., 35, 755–771, https://doi.org/10.5194/ejm-35-755-2023, https://doi.org/10.5194/ejm-35-755-2023, 2023
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Elba tourmaline crystals commonly display a sharp transition to dark colors at the analogous termination, but the mechanisms leading to the formation of such terminations are unclear. Here we propose a general genetic model in which, as a consequence of a pocket rupture event, chemical alteration of early formed Fe-/Mn-rich minerals in the enclosing pegmatite was responsible for the release of Fe and/or Mn in the geochemical system, allowing the formation of the late-stage dark terminations.
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 35, 659–664, https://doi.org/10.5194/ejm-35-659-2023, https://doi.org/10.5194/ejm-35-659-2023, 2023
Ross J. Angel, Mattia L. Mazzucchelli, Kira A. Musiyachenko, Fabrizio Nestola, and Matteo Alvaro
Eur. J. Mineral., 35, 461–478, https://doi.org/10.5194/ejm-35-461-2023, https://doi.org/10.5194/ejm-35-461-2023, 2023
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We have developed the thermodynamic theory of the properties of inclusions consisting of more than one phase, including inclusions containing solids plus a fluid. We present a software utility that enables for the first time the entrapment conditions of multiphase inclusions to be determined from the measurement of their internal pressure when that is measured in a laboratory.
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 35, 397–402, https://doi.org/10.5194/ejm-35-397-2023, https://doi.org/10.5194/ejm-35-397-2023, 2023
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 35, 285–293, https://doi.org/10.5194/ejm-35-285-2023, https://doi.org/10.5194/ejm-35-285-2023, 2023
Cristian Biagioni, Ferdinando Bosi, Daniela Mauro, Henrik Skogby, Andrea Dini, and Federica Zaccarini
Eur. J. Mineral., 35, 81–94, https://doi.org/10.5194/ejm-35-81-2023, https://doi.org/10.5194/ejm-35-81-2023, 2023
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Dutrowite is the first tourmaline supergroup minerals having Ti as a species-defining chemical constituent. Its finding improves our knowledge on the crystal chemistry of this important mineral group and allows us to achieve a better picture of the mechanisms favouring the incorporation of Ti.
Ferdinando Bosi, Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 35, 75–79, https://doi.org/10.5194/ejm-35-75-2023, https://doi.org/10.5194/ejm-35-75-2023, 2023
Related subject area
X-ray and mineral structure
Atomic-scale environment of niobium in ore minerals as revealed by XANES and EXAFS at the Nb K-edge
Structural and compositional data for childrenite from the Homolka granite, Czech Republic
Bobtraillite from Gejiu hyperagpaitic nepheline syenite, southwestern China: new occurrence and crystal structure
Iron oxide inclusions and exsolution textures of rainbow lattice sunstone
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
Structural study of decrespignyite-(Y), a complex yttrium rare earth copper carbonate chloride, by three-dimensional electron and synchrotron powder diffraction
Mullite-2c – a natural polytype of mullite
Quentin Bollaert, Mathieu Chassé, Guillaume Morin, Benoît Baptiste, Alexandra Courtin, Laurence Galoisy, Gautier Landrot, Cécile Quantin, and Georges Calas
Eur. J. Mineral., 36, 55–72, https://doi.org/10.5194/ejm-36-55-2024, https://doi.org/10.5194/ejm-36-55-2024, 2024
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X-ray absorption spectroscopy (XAS) was successfully used to investigate the atomic-scale environment of niobium (Nb) in ore minerals and Nb-doped compounds of technological importance. The demonstrated sensitivity of this technique to Nb minerals could help decipher Nb speciation in mining contexts such as hydrothermal and lateritic deposits and rationalize the origin of the enhanced physico-chemical properties of Nb-doped materials.
Jonas Toupal, Daniela Mauro, Cristian Biagioni, Federica Zaccarini, and Reto Gieré
Eur. J. Mineral., 36, 1–10, https://doi.org/10.5194/ejm-36-1-2024, https://doi.org/10.5194/ejm-36-1-2024, 2024
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In this work, we refine the crystal structure of childrenite. Additionally, we provide compositional data to substantially extend the published solid-solution series between childrenite and eosphorite, the Fe and Mn endmembers, respectively. We analyze the valence state of iron to avoid erroneous classification of ernstite or potential discovery of "oxychildrenite", a mineral species not yet confirmed to be stable in nature.
Yanjuan Wang, Fabrizio Nestola, Zengqian Hou, Xiangping Gu, Guochen Dong, Zhusen Yang, Guang Fan, Zhibin Xiao, and Kai Qu
Eur. J. Mineral., 35, 65–74, https://doi.org/10.5194/ejm-35-65-2023, https://doi.org/10.5194/ejm-35-65-2023, 2023
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Bobtraillite is an extremely rare cyclosilicate with a unique composition and complex structure. In this paper, we describe the second occurrence of the extremely rare complex zirconium silicate. The results suggest that the ideal formula of bobtraillite could be written as (Na, □)12(□, Na)12Sr12Zr14(Si3O9)10[Si2BO7(OH)2]6·12H2O.
Shiyun Jin, Ziyin Sun, and Aaron C. Palke
Eur. J. Mineral., 34, 183–200, https://doi.org/10.5194/ejm-34-183-2022, https://doi.org/10.5194/ejm-34-183-2022, 2022
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The inclusions and exsolution lamellae in rainbow lattice sunstone (RLS) are studied using microscopic observations, chemical analyses and single-crystal X-ray diffraction. Complicated processes producing the aventurescence and adularescence effect in RLS are revealed through the spatial relationship among the inclusions and exsolution lamellae, as well as the unique ordering pattern in the feldspar structures.
Yves Moëlo and Cristian Biagioni
Eur. J. Mineral., 32, 623–635, https://doi.org/10.5194/ejm-32-623-2020, https://doi.org/10.5194/ejm-32-623-2020, 2020
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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.
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, https://doi.org/10.5194/ejm-32-545-2020, 2020
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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.
Stephan Lenz, Johannes Birkenstock, Lennart A. Fischer, Hartmut Schneider, and Reinhard X. Fischer
Eur. J. Mineral., 32, 235–249, https://doi.org/10.5194/ejm-32-235-2020, https://doi.org/10.5194/ejm-32-235-2020, 2020
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A mineral from Ettringer Bellerberg (Eifel, Germany) proved to be a polytype of the important ceramic-phase mullite termed mullite-2c, with – similar to sillimanite – doubling of the c lattice parameter due to strong (Si,Al) order in tetrahedral diclusters and – similar to mullite – presence of oxygen vacancies and tetrahedral triclusters due to Al / Si > 1 in diclusters. Crystals were characterised using single-crystal XRD, electron microprobe
analysis (EMPA) and spindle-stage optical methods.
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Short summary
The discovery of the K-dominant tourmaline maruyamaite with microdiamond inclusions suggested its ultrahigh-pressure formation. We analyzed the role of K in the tourmaline structure, with a special focus on its stability. High pressure is necessary to squeeze the large cation K+ in the stiff framework of tourmaline, although K is the underdog component if Na+ is present in the mineralizing fluid. K-tourmaline is stable at high pressure, overcoming the stereotype of a mere crustal component.
The discovery of the K-dominant tourmaline maruyamaite with microdiamond inclusions suggested...