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Chromian spinel during melting experiments of dry peridotite (KLB-1) at 1.0–2.5 GPa

  • Kyoko N. Matsukage EMAIL logo and Keiko Kubo
Published/Copyright: March 31, 2015
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American Mineralogist
From the journal American Mineralogist Volume 88 Issue 8-9

Abstract

The stability and chemistry of chromian spinel were determined for dry mantle (spinel lherzolite) melting at pressures between 1.0 and 2.5 GPa and temperatures between 1250 and 1500 ∞C. To find the most suitable sample container, we tested three different possibilities at 1.5 GPa: a Pt capsule, a Re/Pt capsule, and a graphite/Pt capsule. The oxygen fugacity of the run products with Pt, Re/Pt, and graphite/Pt are FMQ + 4 to 5, -2 to 0, and < -10, respectively. We conclude that the Re/Pt capsule is most suitable for melting experiments of dry peridotite at high temperatures and the oxygen fugacity similar to that of the terrestrial upper mantle, which has been estimated to be near FMQ. Using Re/ Pt capsules, batch-melting experiments of a dry spinel lherzolite from Kilborne Hole (KLB-1) were performed. Our experimental results and natural mantle peridotites are significantly different in terms of the stability field and the Cr/(Cr + Al) atomic ratio (= Cr') of chromian spinel. Spinel, which is common in natural mantle peridotite regardless of their bulk chemistry, disappeared at a much lower degree of melting in our experiments. The upper limit of the Cr' of spinel just before its disappearance decreases rapidly from 0.45 to 0.13 with increasing pressure, whereas natural peridotites have a wide range of Cr' from 0.1 to 0.8. Our dry experiments, compared with previous hydrous experiments, indicate that the upper limit of Cr' increases with increasing H2O content. These findings suggest that the petrological variation of natural mantle peridotite cannot be formed by simple batch melting but may be the result of more complex melting

Received: 2002-6-24
Accepted: 2003-4-12
Published Online: 2015-3-31
Published in Print: 2003-8-1

© 2015 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. Melting of garnet peridotite: Effects of capsules and thermocouples, and implications for the high-pressure mantle solidus
  2. High-resolution and energy-filtered TEM of the interface between hematite and ilmenite exsolution lamellae: Relevance to the origin of lamellar magnetism
  3. The structural evolution of mercury sulfide precipitate: an XAS and XRD study
  4. Synthetic fluid inclusions as recorders of microfracture healing and overgrowth formation rates
  5. Fluid-induced nucleation of (Y+REE)-phosphate minerals within apatite: Nature and experiment. Part II. Fluorapatite
  6. A technique for measuring 3D crystal-size distributions of prismatic microlites in obsidian
  7. TEM investigation of forsterite dendrites
  8. Mechanism and kinetics of element and isotopic exchange mediated by a fluid phase
  9. Chromian spinel during melting experiments of dry peridotite (KLB-1) at 1.0–2.5 GPa
  10. Resonant XPS study of the pyrite valence band with implications for molecular orbital contributions
  11. Petrology and mineralogy of wollastonite- and melilite-bearing paralavas from the Central Apennines, Italy
  12. Variation of antiphase domain size in omphacite: A tool to determine the temperature–time history of eclogites revisited
  13. Compressional and shear wave velocities of ringwoodite γ-Mg2SiO4 to 12 GPa
  14. A vibrational spectroscopic study of the oxidation of pyrite by ferric iron
  15. The atomic arrangement of the ganophyllite-group modulated layer silicates as determined from the orthorhombic dimorph of tamaite, with the elusive 16.8 Å ganophyllite-group superstructure revealed
  16. The crystal structure of chromian kassite from the Saranovskoye deposit, Northern Urals, Russia
  17. Spectroscopic and related evidence on the coloring and constitution of New Zealand jade
  18. Chemical speciation of Ag in galena by EPR spectroscopy
  19. Pressure dependence of melt viscosity in the system NaAlSi3O8-CaMgSi2O6
  20. Molecules in the SiO2-clathrate melanophlogite: A single-crystal Raman study
  21. Mn-rich tourmaline from Austria: structure, chemistry, optical spectra, and relations to synthetic solid solutions
  22. Compositional heterogeneity of olivine in thermally metamorphosed serpentinite from Southwest Japan
  23. Magnetic monitoring of hydrothermal magnetite nucleation-and-growth: Record of magnetic reversals
  24. High-temperature limits on viscosity of non-Arrhenian silicate melts
  25. First reported sedimentary occurrence of berlinite (AlPO4) in phosphate-bearing sediments from Cioclovina Cave, Romania
https://doi.org/10.2138/am-2003-8-909

Articles in the same Issue

  1. Melting of garnet peridotite: Effects of capsules and thermocouples, and implications for the high-pressure mantle solidus
  2. High-resolution and energy-filtered TEM of the interface between hematite and ilmenite exsolution lamellae: Relevance to the origin of lamellar magnetism
  3. The structural evolution of mercury sulfide precipitate: an XAS and XRD study
  4. Synthetic fluid inclusions as recorders of microfracture healing and overgrowth formation rates
  5. Fluid-induced nucleation of (Y+REE)-phosphate minerals within apatite: Nature and experiment. Part II. Fluorapatite
  6. A technique for measuring 3D crystal-size distributions of prismatic microlites in obsidian
  7. TEM investigation of forsterite dendrites
  8. Mechanism and kinetics of element and isotopic exchange mediated by a fluid phase
  9. Chromian spinel during melting experiments of dry peridotite (KLB-1) at 1.0–2.5 GPa
  10. Resonant XPS study of the pyrite valence band with implications for molecular orbital contributions
  11. Petrology and mineralogy of wollastonite- and melilite-bearing paralavas from the Central Apennines, Italy
  12. Variation of antiphase domain size in omphacite: A tool to determine the temperature–time history of eclogites revisited
  13. Compressional and shear wave velocities of ringwoodite γ-Mg2SiO4 to 12 GPa
  14. A vibrational spectroscopic study of the oxidation of pyrite by ferric iron
  15. The atomic arrangement of the ganophyllite-group modulated layer silicates as determined from the orthorhombic dimorph of tamaite, with the elusive 16.8 Å ganophyllite-group superstructure revealed
  16. The crystal structure of chromian kassite from the Saranovskoye deposit, Northern Urals, Russia
  17. Spectroscopic and related evidence on the coloring and constitution of New Zealand jade
  18. Chemical speciation of Ag in galena by EPR spectroscopy
  19. Pressure dependence of melt viscosity in the system NaAlSi3O8-CaMgSi2O6
  20. Molecules in the SiO2-clathrate melanophlogite: A single-crystal Raman study
  21. Mn-rich tourmaline from Austria: structure, chemistry, optical spectra, and relations to synthetic solid solutions
  22. Compositional heterogeneity of olivine in thermally metamorphosed serpentinite from Southwest Japan
  23. Magnetic monitoring of hydrothermal magnetite nucleation-and-growth: Record of magnetic reversals
  24. High-temperature limits on viscosity of non-Arrhenian silicate melts
  25. First reported sedimentary occurrence of berlinite (AlPO4) in phosphate-bearing sediments from Cioclovina Cave, Romania
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