1. Investigation of superstructures in mullite by high resolution electron microscopy and electron diffraction

   • J. Ylä-Jääski
   • H.-U. Nissen

   OriginalPaper Pages: 47 - 54

2. Nucleation on perthite-perthite boundaries and exsolution mechanisms in alkali feldspars

   • William L. Brown
   • Ian Parsons

   OriginalPaper Pages: 55 - 61

3. Single crystal elastic properties of protoenstatite: A comparison with orthoenstatite

   • Michael T. Vaughan
   • Jay D. Bass

   OriginalPaper Pages: 62 - 68

4. TEM investigation of a microcline from a nepheline syenite

   • K. L. Smith
   • A. C. McLaren

   OriginalPaper Pages: 69 - 76

5. Polytypism and the factors determining the stability of spinelloid structures

   • Geoffrey D. Price

   OriginalPaper Pages: 77 - 83

6. New hole centers in natural quartz

   • D. Maschmeyer
   • G. Lehmann

   OriginalPaper Pages: 84 - 88

7. Raman spectra of gypsum under pressure

   • R. Couty
   • B. Velde
   • J. M. Besson

   OriginalPaper Pages: 89 - 93

8. The possible reasons for the absence of condensed phosphates in nature

   • K. Byrappa

   OriginalPaper Pages: 94 - 95