Re: ushkovite

Armel Le Bail ( armel@fluo.univ-lemans.fr )
Wed, 26 Aug 1998 15:41:35 +0200

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>Does anyone know of the existence of structural data for Ushkovite
>[ Mg Fe2 (PO4)2 (OH)2 !8H2O ..... ICDD card no. 35-685 ] - it
>is not on the ICSD and a literature search has (so far) been
>unsuccessful.

You may have more success in finding structural data for :
Gordonite
Laueite
Paravauxite
Sigloite
which are classified in the same group as Ushkovite by
F.C. Hawthorne in Z. Kristallogr. 192 (1990) 1-52.
All are P-1 with neighbouring cell parameters.

Armel

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