Startseite The role of silver on the stabilization of the incommensurately modulated structure in calaverite, AuTe2
Artikel
Lizenziert
Nicht lizenziert Erfordert eine Authentifizierung

The role of silver on the stabilization of the incommensurately modulated structure in calaverite, AuTe2

  • Luca Bindi EMAIL logo , Alla Arakcheeva und Gervais Chapuis
Veröffentlicht/Copyright: 1. April 2015
Veröffentlichen auch Sie bei De Gruyter Brill
Informationen für Autor*innen
American Mineralogist
Aus der Zeitschrift American Mineralogist Band 94 Heft 5-6

Abstract

Structural investigations of several minerals belonging to the calaverite group with composition Au1-xAgxTe2 (x = 0.00, 0.02, 0.05, 0.09, 0.19, and 0.33) indicate that Ag is randomly distributed on the Au sites. This suppresses the valence fluctuation of Au and, therefore, the structure modulations. The results are compared with the previously published incommensurately modulated structure of calaverite, Au0.9Ag0.1Te2, which is characterized by valence fluctuations of Au reinforced by an ordered distribution of Ag. The (3+1)-dimensional calaverite structure type is able to reproduce both (3+1)D and 3D related structures with the general formula AB2(A = Au, Ag, Cu, Nb, Ta; B = Te).

Keywords : Calaverite; modulated structure; valence fluctuations; krennerite
Received: 2008-11-25
Accepted: 2009-2-2
Published Online: 2015-4-1
Published in Print: 2009-5-1

© 2015 by Walter de Gruyter Berlin/Boston

Artikel in diesem Heft

  1. Closure temperatures of intracrystalline ordering in anatectic and metamorphic hercynite, Fe2+Al2O4
  2. Arsenate substitution in hydroxylapatite: Structural characterization of the Ca5(PxAs1–xO4)3OH solid solution
  3. The crystal chemical role of Zn in alunite-type minerals: Structure refinements for kintoreite and zincian kintoreite
  4. Application of precession electron diffraction to the characterization of (021) twinning in pseudo-hexagonal coesite
  5. Structure, thermodynamic, and transport properties of molten Mg2SiO4: Molecular dynamics simulations and model EOS
  6. High-pressure behavior of åkermanite and gehlenite and phase stability of the normal structure in melilites
  7. Synchrotron-based speciation of chromium in an Oxisol from New Caledonia: Importance of secondary Fe-oxyhydroxides
  8. Meurigite-Na, a new species, and the relationship between phosphofibrite and meurigite
  9. The role of silver on the stabilization of the incommensurately modulated structure in calaverite, AuTe2
  10. Hydrogen zoning in zinc-bearing staurolite from a high-P, low-T diasporite (Samos, Greece): A combined EMP-SIMS-FIB-FTIR study
  11. Dmitryivanovite: A new high-pressure calcium aluminum oxide from the Northwest Africa 470 CH3 chondrite characterized using electron backscatter diffraction analysis
  12. Crystal chemistry of hydrous forsterite and its vibrational properties up to 41 GPa
  13. The geothermobarometric potential of tourmaline, based on experimental and natural data
  14. Inverse spinel structure of Co-doped gahnite
  15. Advances in understanding the structure of borosilicate glasses: A Raman spectroscopy study
  16. The occurrence of tetrahedrally coordinated Al and B in tourmaline: An 11B and 27Al MAS NMR study
  17. Accurate and precise lattice parameters by selected-area electron diffraction in the transmission electron microscope
  18. Two types of metamorphic monazite with contrasting La/Nd, Th, and Y signatures in an ultrahigh-pressure metapelite from the Pohorje Mountains, Slovenia: Indications for pressure-dependent REE exchange between apatite and monazite?
  19. Cs-exchange in birnessite: Reaction mechanisms inferred from time-resolved X-ray diffraction and transmission electron microscopy
  20. Crystal chemistry and radiation-induced amorphization of P-coffinite from the natural fission reactor at Bangombé, Gabon
  21. Letter. Tistarite, Ti2O3, a new refractory mineral from the Allende meteorite
  22. Letter. Davisite, CaScAlSiO6, a new pyroxene from the Allende meteorite
  23. Letter. The 4500 cm–1 infrared absorption band in hydrous aluminosilicate glasses is a combination band of the fundamental (Si,Al)-OH and O-H vibrations
https://doi.org/10.2138/am.2009.3159
Schlagwörter für diesen Artikel
Calaverite; modulated structure; valence fluctuations; krennerite

Artikel in diesem Heft

  1. Closure temperatures of intracrystalline ordering in anatectic and metamorphic hercynite, Fe2+Al2O4
  2. Arsenate substitution in hydroxylapatite: Structural characterization of the Ca5(PxAs1–xO4)3OH solid solution
  3. The crystal chemical role of Zn in alunite-type minerals: Structure refinements for kintoreite and zincian kintoreite
  4. Application of precession electron diffraction to the characterization of (021) twinning in pseudo-hexagonal coesite
  5. Structure, thermodynamic, and transport properties of molten Mg2SiO4: Molecular dynamics simulations and model EOS
  6. High-pressure behavior of åkermanite and gehlenite and phase stability of the normal structure in melilites
  7. Synchrotron-based speciation of chromium in an Oxisol from New Caledonia: Importance of secondary Fe-oxyhydroxides
  8. Meurigite-Na, a new species, and the relationship between phosphofibrite and meurigite
  9. The role of silver on the stabilization of the incommensurately modulated structure in calaverite, AuTe2
  10. Hydrogen zoning in zinc-bearing staurolite from a high-P, low-T diasporite (Samos, Greece): A combined EMP-SIMS-FIB-FTIR study
  11. Dmitryivanovite: A new high-pressure calcium aluminum oxide from the Northwest Africa 470 CH3 chondrite characterized using electron backscatter diffraction analysis
  12. Crystal chemistry of hydrous forsterite and its vibrational properties up to 41 GPa
  13. The geothermobarometric potential of tourmaline, based on experimental and natural data
  14. Inverse spinel structure of Co-doped gahnite
  15. Advances in understanding the structure of borosilicate glasses: A Raman spectroscopy study
  16. The occurrence of tetrahedrally coordinated Al and B in tourmaline: An 11B and 27Al MAS NMR study
  17. Accurate and precise lattice parameters by selected-area electron diffraction in the transmission electron microscope
  18. Two types of metamorphic monazite with contrasting La/Nd, Th, and Y signatures in an ultrahigh-pressure metapelite from the Pohorje Mountains, Slovenia: Indications for pressure-dependent REE exchange between apatite and monazite?
  19. Cs-exchange in birnessite: Reaction mechanisms inferred from time-resolved X-ray diffraction and transmission electron microscopy
  20. Crystal chemistry and radiation-induced amorphization of P-coffinite from the natural fission reactor at Bangombé, Gabon
  21. Letter. Tistarite, Ti2O3, a new refractory mineral from the Allende meteorite
  22. Letter. Davisite, CaScAlSiO6, a new pyroxene from the Allende meteorite
  23. Letter. The 4500 cm–1 infrared absorption band in hydrous aluminosilicate glasses is a combination band of the fundamental (Si,Al)-OH and O-H vibrations
Jetzt anmelden und 20% sparen
Institutioneller Zugang
Wie funktioniert Authentifizierung?
Haben Sie eine Idee, wie wir unsere Website verbessern können?
Bitte schreiben Sie uns.
© 2025 De Gruyter Brill
Heruntergeladen am 17.9.2025 von https://www.degruyterbrill.com/document/doi/10.2138/am.2009.3159/html
Button zum nach oben scrollen