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Fluorite Bergheim, France

Posted by Philip Bluemner  
Philip Bluemner June 28, 2012 09:38AM
I have a fluorite labelled as Bergheim, Alsace, France. The fluorites from Bergheim can be mistaken with fluorites from Berbes, Spain. My specimen is 10 x 7 x 5 cm and has the same dark gray host rock like other Bergheim specimens show here at mindat. But there is one difference. My specimen has crystal faces of hexahedron and rhombododecahedron combinations. Because I haven't seen any other crystal forms other than hexahedrons from Bergheim, I suppose my piece is not from there.

Can anyone confirm my assumption or is the crystal form no distinguishing feature between the two localities?

Best regards

Edited 3 time(s). Last edit at 06/28/2012 09:41AM by Philip Bluemner.
open | download - bergheim1.jpg (306.2 KB)
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Philip Bluemner June 28, 2012 09:39AM

Edited 1 time(s). Last edit at 06/28/2012 09:40AM by Philip Bluemner.
open | download - bergheim4.jpg (193.3 KB)
open | download - bergheim5.jpg (161.9 KB)
Julien Lebocey June 28, 2012 01:36PM
i think you're right. Your specimen is clearly not coming from bergheim. On the one hand, i have never seen rhombododecaedron faces of the on bergheim fluorites and on the other hand, the matrice of bergheim fluorites is dark (black limestone of the middle trias)
Michel Ambroise June 28, 2012 03:56PM
Not a bergheim for sure:-)
Philip Bluemner July 07, 2012 03:01PM
Thank you very much for your help!

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