> >The sample was in-situ crystallised by putting a drop of the mother
> >liquid on a silicon substrate and letting evaporate the solvent. This
> >should favour a random orientation of the crystallites, not?
> 
> Unfortunately NOT.
> I have seen preferential crystallization occurring exactly by doing
> the same kind of experiments.
> 
> Just put your sample under a microscope..
> 
You are absolutely right. I wonder now why I did not do that 
before... like I always do before starting a single-crystal 
diffraction experiment.

> Norberto (fully agreeing with Armel's opinion, and possessing some
> unindexed "2D" patterns as well)
> 
Well, it is my number one.
Arie

            
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A. van der Lee
Institut Europ�en des Membranes (UMR 5635)
Universit� de Montpellier II - cc 047
Place E. Bataillon
34095 Montpellier Cedex 5
FRANCE

visiting address: 300 Av. Prof. E. Jeanbrau

t�l.: 00-33-(0)4.67.14.91.35
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