MgSiO3 perovskite: A HRTEM study

Ishmael Hassan, Yasuhiro Kudoh, P R Buseck, Eiji Ito

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Selected-area electron diffraction patterns for the [110] zone of MgSiO3 perovskite are consistent with the orthorhombic unit cell obtained by X-ray diffraction (a = 4.775, b = 4.929, c = 6.897 Å). Various areas of a crystal fragment show diffuse streaking along c*, and well-developed satellite reflections that give a 3-fold repeat along [110]*. Another fragment shows doubled cell dimensions when viewed down [130]. The variable occurrence of the satellite reflectioncs and diffuse streaking indicate subtle variations in ordering, chemistry, or both. Images obtained by high-resolution transmission electron microscopy contain perfectly ordered regions, out-of-phase boundaries, and intergrowths of the two orthorhombic forms of perovskite.

Original languageEnglish (US)
Pages (from-to)799-804
Number of pages6
JournalMineralogical Magazine
Volume60
Issue number5
StatePublished - Oct 1996

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perovskite
Satellites
Phase boundaries
High resolution transmission electron microscopy
Electron diffraction
Diffraction patterns
diffraction
transmission electron microscopy
X-ray diffraction
crystal
fold
X ray diffraction
electron
Crystals

Keywords

  • HRTEM
  • Intergrowth
  • MgSio perovskite
  • Out-of-phase boundaries
  • Satellite reflections

ASJC Scopus subject areas

  • Geochemistry and Petrology

Cite this

Hassan, I., Kudoh, Y., Buseck, P. R., & Ito, E. (1996). MgSiO3 perovskite: A HRTEM study. Mineralogical Magazine, 60(5), 799-804.

MgSiO3 perovskite : A HRTEM study. / Hassan, Ishmael; Kudoh, Yasuhiro; Buseck, P R; Ito, Eiji.

In: Mineralogical Magazine, Vol. 60, No. 5, 10.1996, p. 799-804.

Research output: Contribution to journalArticle

Hassan, I, Kudoh, Y, Buseck, PR & Ito, E 1996, 'MgSiO3 perovskite: A HRTEM study', Mineralogical Magazine, vol. 60, no. 5, pp. 799-804.
Hassan I, Kudoh Y, Buseck PR, Ito E. MgSiO3 perovskite: A HRTEM study. Mineralogical Magazine. 1996 Oct;60(5):799-804.
Hassan, Ishmael ; Kudoh, Yasuhiro ; Buseck, P R ; Ito, Eiji. / MgSiO3 perovskite : A HRTEM study. In: Mineralogical Magazine. 1996 ; Vol. 60, No. 5. pp. 799-804.
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