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Humidity-induced phase transitions of ferric sulfate minerals studied by in situ and ex situ X-ray diffraction

✍ Scribed by Xu, W.; Tosca, N. J.; McLennan, S. M.; Parise, J. B.


Book ID
120288315
Publisher
Mineralogical Society of America
Year
2009
Tongue
English
Weight
967 KB
Volume
94
Category
Article
ISSN
0003-004X

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Ca 2 Fe 2 O 5 shows a first-order phase transition from space group Pnma to a modulated structure described in superspace group Immað00gÞs00. The transition starts at 947 K during heating and the reverse transition in cooling conditions starts at 923 K, as determined from differential thermal analys