Startseite Re-equilibration of glass and CO2 inclusions in xenolith olivine: A TEM study
Artikel
Lizenziert
Nicht lizenziert Erfordert eine Authentifizierung

Re-equilibration of glass and CO2 inclusions in xenolith olivine: A TEM study

  • Cecilia Viti und Maria-Luce Frezzotti EMAIL logo
Veröffentlicht/Copyright: 25. März 2015
Veröffentlichen auch Sie bei De Gruyter Brill
Informationen für Autor*innen
American Mineralogist
Aus der Zeitschrift American Mineralogist Band 85 Heft 10

Abstract

CO2-rich fluid inclusions were observed in olivine from mantle xenoliths from the Island of Tenerife, Canary Islands. Inclusions that are present in deformed olivine porphyroclasts consist of CO2 fluids + minor high-alkali, silica-rich glass ± Ni-Fe sulfides. Homogenization temperature distributions reveal that most of the inclusions (originally trapped at mantle conditions) re-equilibrated to lower density values.

Transmission electron microscope (TEM) studies indicate that most fluid inclusions appear as perfectly euhedral negative crystals, with variable shape (from prismatic to equant), size (from <0.02 to 0.15 μm), and inner texture. Different kinds of negative crystals may coexist in the same trail of inclusions. Inclusions are commonly connected to structural defects (dislocation arrays formed after fracture healing), which represent a possible path for leakage of the fluid phase. These microstructures, undetectable by optical microscopy, could have modified the original composition and/or density of the inclusions through CO2 diffusion; consequently, they should be taken into account for the correct interpretation of microthermometric results.

Received: 1999-8-23
Accepted: 2000-6-2
Published Online: 2015-3-25
Published in Print: 2000-10-1

© 2015 by Walter de Gruyter Berlin/Boston

Artikel in diesem Heft

  1. Nucleation and growth kinetics of analcime from precursor Na-clinoptilolite
  2. Viscosities of granitic (sensu lato) melts: Influence of the anorthite component
  3. Geochemistry of pyroxene inclusions from the Warrumbungle Volcano, New South Wales, Australia
  4. Supersilicic clinopyroxene and silica exsolution in UHPM eclogite and pelitic gneiss from the Kokchetav massif, Kazakhstan
  5. Experimental study of intracrystalline Fe2+-Mg exchange in three augite crystals: Effect of composition on geothermometric calibration
  6. Transmission electron microscopy and differential thermal studies of lazurite polymorphs
  7. Re-equilibration of glass and CO2 inclusions in xenolith olivine: A TEM study
  8. Origin and structural character of haüyness in spinel dunite xenoliths from La Palma, Canary Islands
  9. Pyrrhotite varieties from the 9.1 km deep borehole of the KTB project
  10. Mineralogy and magnetic behavior of pyrrhotite from a 260 °C section at the KTB drilling site, Germany
  11. Surface defects and self-diffusion on pyrite {100}: An ultra-high vacuum scanning tunneling microscopy and theoretical modeling study
  12. Rare-earth elements in chlorapatite [Ca10(PO4)6Cl2]: Uptake, site preference, and degradation of monoclinic structure
  13. Thermal pressure in MgO and MgSiO3 perovskite at lower mantle conditions
  14. Electron energy-loss spectroscopy of silicate perovskite-magnesiowüstite high-pressure assemblages
  15. Magnesium coordination environments in glasses and minerals: New insight from high-field magnesium-25 MAS NMR
  16. In situ powder diffraction study of titanite (CaTiOSiO4) at high pressure and high temperature
  17. Surinamite: A high-temperature metamorphic beryllosilicate from Lewisian sapphirine-bearing kyanite-orthopyroxene-quartz-potassium feldspar gneiss at South Harris, N.W. Scotland
  18. Single-crystal X-ray diffraction study of FeGeO3 high-P clinopyroxene (C2/c) up to 8.2 GPa
  19. High-pressure Ca4Al6O13: An example of a calcium aluminate with three different types of coordination polyhedra for aluminum
  20. Cation distribution in synthetic zinc ferrite (Zn0.97Fe2.02O4) from in situ high-temperature neutron powder diffraction
  21. Infrared study of OH sites in tourmaline from the elbaite-schorl series
  22. Second occurrence of okayamalite, Ca2SiB2O7: chemical and TEM characterization
  23. Rietveld refinement of okayamalite, Ca2SiB2O7: Structural evidence for the B/Si ordered distribution
  24. Tumchaite Na2(Zr,Sn)Si4O11·2H2O—A new mineral from carbonatites of the Vuoriyarvi alkali-ultrabasic massif, Murmansk Region, Russia
  25. The crystal structure of thornasite, Na12Th3[Si8O19]4(H2O)18: A novel interrupted silicate framework
  26. Symesite, Pb10(SO4)O7Cl4(H2O), a new PbO-related sheet mineral: Description and crystal structure
  27. Na2Ca2(P2O7)F2, the first diphosphate of the cuspidine family
  28. Amphibole asbestos from Libby, Montana: Aspects of nomenclature
  29. Thermodynamics of multicomponent olivines and the solution properties of (Ni,Mg,Fe)2SiO4 and (Ca,Mg,Fe)2SiO4 olivines—Comment
  30. Thermodynamics of multicomponent olivines and the solution properties of (Ni,Mg,Fe)2SiO4 and (Ca,Mg,Fe)2SiO4 olivine—Reply
  31. Letter. Fivefold-coordinated aluminum in tectosilicate glasses observed by triple quantum MAS NMR
https://doi.org/10.2138/am-2000-1007

Artikel in diesem Heft

  1. Nucleation and growth kinetics of analcime from precursor Na-clinoptilolite
  2. Viscosities of granitic (sensu lato) melts: Influence of the anorthite component
  3. Geochemistry of pyroxene inclusions from the Warrumbungle Volcano, New South Wales, Australia
  4. Supersilicic clinopyroxene and silica exsolution in UHPM eclogite and pelitic gneiss from the Kokchetav massif, Kazakhstan
  5. Experimental study of intracrystalline Fe2+-Mg exchange in three augite crystals: Effect of composition on geothermometric calibration
  6. Transmission electron microscopy and differential thermal studies of lazurite polymorphs
  7. Re-equilibration of glass and CO2 inclusions in xenolith olivine: A TEM study
  8. Origin and structural character of haüyness in spinel dunite xenoliths from La Palma, Canary Islands
  9. Pyrrhotite varieties from the 9.1 km deep borehole of the KTB project
  10. Mineralogy and magnetic behavior of pyrrhotite from a 260 °C section at the KTB drilling site, Germany
  11. Surface defects and self-diffusion on pyrite {100}: An ultra-high vacuum scanning tunneling microscopy and theoretical modeling study
  12. Rare-earth elements in chlorapatite [Ca10(PO4)6Cl2]: Uptake, site preference, and degradation of monoclinic structure
  13. Thermal pressure in MgO and MgSiO3 perovskite at lower mantle conditions
  14. Electron energy-loss spectroscopy of silicate perovskite-magnesiowüstite high-pressure assemblages
  15. Magnesium coordination environments in glasses and minerals: New insight from high-field magnesium-25 MAS NMR
  16. In situ powder diffraction study of titanite (CaTiOSiO4) at high pressure and high temperature
  17. Surinamite: A high-temperature metamorphic beryllosilicate from Lewisian sapphirine-bearing kyanite-orthopyroxene-quartz-potassium feldspar gneiss at South Harris, N.W. Scotland
  18. Single-crystal X-ray diffraction study of FeGeO3 high-P clinopyroxene (C2/c) up to 8.2 GPa
  19. High-pressure Ca4Al6O13: An example of a calcium aluminate with three different types of coordination polyhedra for aluminum
  20. Cation distribution in synthetic zinc ferrite (Zn0.97Fe2.02O4) from in situ high-temperature neutron powder diffraction
  21. Infrared study of OH sites in tourmaline from the elbaite-schorl series
  22. Second occurrence of okayamalite, Ca2SiB2O7: chemical and TEM characterization
  23. Rietveld refinement of okayamalite, Ca2SiB2O7: Structural evidence for the B/Si ordered distribution
  24. Tumchaite Na2(Zr,Sn)Si4O11·2H2O—A new mineral from carbonatites of the Vuoriyarvi alkali-ultrabasic massif, Murmansk Region, Russia
  25. The crystal structure of thornasite, Na12Th3[Si8O19]4(H2O)18: A novel interrupted silicate framework
  26. Symesite, Pb10(SO4)O7Cl4(H2O), a new PbO-related sheet mineral: Description and crystal structure
  27. Na2Ca2(P2O7)F2, the first diphosphate of the cuspidine family
  28. Amphibole asbestos from Libby, Montana: Aspects of nomenclature
  29. Thermodynamics of multicomponent olivines and the solution properties of (Ni,Mg,Fe)2SiO4 and (Ca,Mg,Fe)2SiO4 olivines—Comment
  30. Thermodynamics of multicomponent olivines and the solution properties of (Ni,Mg,Fe)2SiO4 and (Ca,Mg,Fe)2SiO4 olivine—Reply
  31. Letter. Fivefold-coordinated aluminum in tectosilicate glasses observed by triple quantum MAS NMR
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 23.9.2025 von https://www.degruyterbrill.com/document/doi/10.2138/am-2000-1007/html
Button zum nach oben scrollen