Conditions Extrêmes et Matériaux : Haute Température et Irradiation
CEMHTI - UPR3079 CNRS

utilisateur non identifié  |   Login

View CEMHTI Publication

Return to publication search...
Ask for a reprint
email :  


2016

ACL
doi
HAL

N.Bost, S.Duraipandian, G.Guimbretière, J.Poirier, 'Raman spectra of synthetic and natural mullite', Vib. Spectrosc 82 50-52 (2016) doi:10.1016/j.vibspec.2015.11.003

Mullite (Al4+2xSi2-2xO10-x) is a very rare alumino-silicate mineral that requires high alumina containing rocks and high temperature for its synthesis. In the frame of planetary exploration, this mineral can be a useful probe of very specific past environmental conditions. In this study, we discuss the Raman characterisation (457, 514.5, 633 and 785 nm laser excitation wavelengths) of natural mullite from Mull Island and compare it with the artificial mullite. The natural mullite samples show partially altered {010} cleaved crystals with OH and more octahedral [AlO6] than synthetic samples.