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ORDERING IN SYNTHETIC MAGNESIUM MANGANESE OLIVINES BY SYNCHROTRON X-RAY RIETVELD REFINEMENT

Abstract:

Samples of Mg-Mn olivines (MgxMn2-xSiO4) have been prepared at different temperatures (800 °C, 1000 °C and 1300 °C) and with different stoichiometries (x = 0.4, 0.8, 1.0 and 1.4). Synchrotron X-ray powder diffraction data have been collected on Daresbury SRS station 2.3 on these samples. The Rietveld method has been used to refine the orthorhombic (Pnma) olivine structures in order to determine the occupancies of Mg and Mn on the M1 (4a) and M2 (4c) sites, Mn tends to become ordered onto the ...

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Institution:
University of Oxford
Division:
MPLS
Department:
Earth Sciences
Role:
Author
Host title:
EPDIC 3, PTS 1 AND 2
Volume:
166
Issue:
pt 2
Pages:
643-646
Publication date:
1994-01-01
ISSN:
0255-5476
ISBN:
0878496823
Pubs id:
pubs:175060
UUID:
uuid:060e8436-46e6-4fb7-82a3-d4ef029b585e
Local pid:
pubs:175060
Source identifiers:
175060
Deposit date:
2012-12-19

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