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Dolní Bory sekaninaite gallery

Posted by Jakub Jirásek  
Dolní Bory sekaninaite gallery
July 20, 2012 08:28AM
    
Hi,

I believe at least some of the pictures of sekaninaite from Dolní Bory pegmatite present other minerals instead.

Photo ID: 219664 - definitely something else. In case there is a sekaninaite on the other side of the sample, it might be product of sekaninaite decomposition along (001) plane, probably a mixture of chlorite and siderophyllite

Photo ID: 150948 - totally altered sekaninaite, i.e. pseudomorphose (muscovite, clay minerals, rarely feldspar) after sekaninaite

Photo ID: 326599 - it is a problem to tell what is on the picture thanks to its poor quality actually

Photos ID: 23397 & 23398 & 150947 - The same as for picture 219664. Those are sekaninaites for sure, but in all cases the picture present just decomposition minerals along (001) planes and not the sekaninaite itself. I am not sure if they really belong to the gallery of this mineral, If yes, their description should be changed.

Keep in mind that sekaninaite should be deep blue to violet vith vitreous lustre. Other cases (specially at Dolní Bory) are alteration product, which are found very often.

Jakub
avatar Re: Dolní Bory sekaninaite gallery
July 21, 2012 09:16AM
    
Messages sent.
Re: Dolní Bory sekaninaite gallery
July 21, 2012 01:36PM
    
Hi

can you delete picture 23398 and 23397 ? i tried it but dont know how to delete older pictures. Thanks for pointing this out to me !!

PaulB.
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