Articles | Volume 32, issue 2
https://doi.org/10.5194/ejm-32-235-2020
https://doi.org/10.5194/ejm-32-235-2020
Research article
 | 
11 Mar 2020
Research article |  | 11 Mar 2020

Mullite-2c – a natural polytype of mullite

Stephan Lenz, Johannes Birkenstock, Lennart A. Fischer, Hartmut Schneider, and Reinhard X. Fischer

Viewed

Total article views: 2,144 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
1,699 369 76 2,144 116 52 51
  • HTML: 1,699
  • PDF: 369
  • XML: 76
  • Total: 2,144
  • Supplement: 116
  • BibTeX: 52
  • EndNote: 51
Views and downloads (calculated since 11 Mar 2020)
Cumulative views and downloads (calculated since 11 Mar 2020)

Viewed (geographical distribution)

Total article views: 1,877 (including HTML, PDF, and XML) Thereof 1,807 with geography defined and 70 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 05 Dec 2024
Download
Short summary
A mineral from Ettringer Bellerberg (Eifel, Germany) proved to be a polytype of the important ceramic-phase mullite termed mullite-2c, with – similar to sillimanite – doubling of the c lattice parameter due to strong (Si,Al) order in tetrahedral diclusters and – similar to mullite – presence of oxygen vacancies and tetrahedral triclusters due to Al / Si > 1 in diclusters. Crystals were characterised using single-crystal XRD, electron microprobe analysis (EMPA) and spindle-stage optical methods.