1. Important note to authors

   Announcement Pages: 97 - 97

2. Referee acknowledgement

   Acknowledgments Pages: 98 - 98

3. X-ray and HRTEM study of sursassite: Crystal structure, stacking disorder, and sursassite-pumpellyite intergrowth

   • M. Mellini
   • S. Merlino
   • M. Pasero

   OriginalPaper Pages: 99 - 105

4. The effects of pressure and temperature on nonstoichiometric wüstite, Fe_xO: The iron-rich phase boundary

   • C. A. McCammon
   • Lin-gun Liu

   OriginalPaper Pages: 106 - 113

5. Theoretical growth morphology of whewellite CaC₂O₄·H₂O

   • Marinella Franchini-Angela
   • Dino Aquilano

   OriginalPaper Pages: 114 - 120

6. Shock effects in melilite

   • Helmut Schäfer
   • Wolfgang Friedrich Müller
   • Ulrich Hornemann

   OriginalPaper Pages: 121 - 124

7. Room temperature microplasticity of a spodumene LiAlSi₂O₆

   • J. C. van-Duysen
   • J. C. Doukhan

   OriginalPaper Pages: 125 - 132

8. On the relationship between refractive index and density for SiO₂ polymorphs

   • Sławomir Maj

   OriginalPaper Pages: 133 - 136

9. Correlation of ²⁹Si nuclear magnetic resonance chemical shifts in silicates with orbital energy differences obtained from X-ray spectra

   • J. A. Tossell

   OriginalPaper Pages: 137 - 141

10. Deformation of experimentally shock-loaded quartz powders: X-ray line broadening studies

    • H. Schneider
    • R. Vasudevan
    • U. Hornemann

    OriginalPaper Pages: 142 - 147

11. Mineralogical field excursions in connection with the congress of the international union of crystallography in hamburg (West Germany), August 9–18, 1984

    Announcement Pages: 148 - 148

12. ICCGCPS, international conference on crystal growth and characterization of polytype structures, July 3–6, 1984, Marseille, France

    Announcement Pages: 148 - 148