1. Framework silica structures generated using simulated annealing with a potential energy function based on an H₆Si₂O₇ molecule

   • M. B. Boisen Jr.
   • G. V. Gibbs
   • M. S. T. Bukowinski

   OriginalPaper Pages: 269 - 284

2. A quantum-mechanical study of the relative stability under pressure of MgSiO₃-ilmenite, MgSiO₃-perovskite, and MgO-periclase+SiO₂-stishovite assemblage

   • Ph. D'Arco
   • G. Sandrone
   • V. R. Saunders

   OriginalPaper Pages: 285 - 293

3. Polarized electronic absorption spectra of 3d³-configurated tetravalent manganese in octahedral fields of Mn(SeO₃)₂

   • M. Wildner
   • K. Langer

   OriginalPaper Pages: 294 - 298

4. Iron site geometry in orthopyroxene: Multiple scattering calculations and XANES study

   • Eleonora Paris
   • Trevor A. Tyson

   OriginalPaper Pages: 299 - 308

5. Natrolite, part II: Determination of deformation electron densities by the X-X method

   • E. Stuckenschmidt
   • W. Joswig
   • W. H. Baur

   OriginalPaper Pages: 309 - 316

6. S K- and L-edge XANES and electronic structure of some copper sulfide minerals

   • D. Li
   • G. M. Bancroft
   • K. H. Tan

   OriginalPaper Pages: 317 - 324

7. X-ray diffraction study of the displacive phase transition in anorthoclase, grain-size effects and surface relaxations

   • R. J. Harrison
   • E. K. H. Salje

   OriginalPaper Pages: 325 - 329

8. Sectors in polygonal serpentine. A model based on dislocations

   • A. Baronnet
   • M. Mellini
   • B. Devouard

   OriginalPaper Pages: 330 - 343

9. Comparative compressibilities of majorite-type garnets

   • R. M. Hazen
   • R. T. Downs
   • T. Gasparik

   OriginalPaper Pages: 344 - 349