Physics and Chemistry of Minerals

, Volume 33, Issue 6, pp 394–402 | Cite as

TEM characterization of dislocations and slip systems in stishovite deformed at 14 GPa, 1,300°C in the multianvil apparatus

  • M. Texier
  • P. Cordier
Original Paper


Transmission electron microscopy (TEM) has been used to investigate deformation microstructures of synthetic stishovite specimens deformed at 14 GPa, 1,300°C. Geometrical characteristics of numerous dislocations have been characterized by dislocation contrast and stereographic analyses in order to identify the easy slip systems of stishovite. TEM data allowed us to characterize the following slip systems: 〈100〉{001}, 〈100〉{010}, 〈100〉{021}, [001]{100}, [001]{110}, [001]{210} and \(\langle 110\rangle \{1\bar{1}0\}.\) Observation of sub-grain boundaries and scalloped edge dislocations suggest that climb has been activated in the specimens.


Stishovite Dislocation Plasticity Confining pressure Twinning 



We thank J.L. Mosenfelder for his help in synthesising large-grained sthishovite. High-pressure experiments were performed at the Bayerisches Geoinstitut under the EU “Research Infrastructures: Transnational Access” Programme (Contract No. 505320 (RITA)-High Pressure). This work was supported by CNRS-INSU under the DyETI programme. Careful reviews from T.G. Sharp and A. El Goresy are gratefully acknowledged.


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Laboratoire de Structure et Propriétés de l’Etat Solide, UMR CNRS 8008 - Bat C6Université des Sciences et Technologies de LilleVilleneuve d’Ascq CedexFrance
  2. 2.Bayerisches GeoinstitutUniversität BayreuthBayreuthGermany

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