Following up the '2D' indexing..
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..
Norberto (fully agreeing with Armel's opinion, and possessing some unindexed "2D" patterns as well)
