Dear Dale,
A warm thank you for pointing out what I had overseen.
And a big thanks to all the others who commented so far,
cheers,
Gerlind
On 16/02/2021 21:19, Dale Tronrud wrote:
On 2/16/2021 11:47 AM, Gerlind Sulzenbacher wrote:
Dear all,
I wonder whether any of you have ever encountered such strange crystals.
In the images you can download via the link below, crystal1 looks
hollow, crystal2 looks like a cubic crystal embedded within a
hexagonal arragement.
I don't know the cause of the overall appearance that your cubic
crystals are embedded within larger cubic objects. I do know that the
projection of a cube, down its three-fold axis, to a plane will create
a hexagon. I think that is the case in your second photo. The
six-fold symmetry is actually the result of a special view of the same
cubes you are seeing elsewhere.
Dale Tronrud
https://filesender.renater.fr/?s=download&token=71d70da4-5ea2-4cf3-ae5f-5d89545574ce
May be all this is just an optical Fata Morgana.
We are waiting for our next synchrotron beam time to see whether, and
what kind of diffraction they could provide.
In the meanwhile, I leave you with the beauty and may be somebody
want's to comment.
with best wishes,
Gerlind
--
Gerlind Sulzenbacher
Architecture et Fonction des Macromolécules Biologiques
UMR7257 CNRS, Aix-Marseille Université
Case 932
163 Avenue de Luminy
13288 Marseille cedex 9
France
Tel +33 491 82 55 66
Fax +33 491 26 67 20
E-mail: gerlind.sulzenbac...@univ-amu.fr
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