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LocalitiesMargabal Mine, Entraygues-sur-Truyère, Rodez, Aveyron, Occitanie, France

13th Feb 2015 13:03 UTCJoan Rosell 🌟 Expert

09744560015849850453386.jpg
Hi,


Looking for info from Margabal minerals I found that autunite/meta-autunite is not listed in the locality.

There are some comments in pictures about uranocircite as the yellow original mineral.

I have analyzed by SEM-EDS some yellow crystals of two specimens (photo attached) and no Ba present at all in results.

Please, could you publish some more info about this uranocircite.


Salut

Joan Rosell | Rosell Minerals

05376980014950546245754.jpg

13th Feb 2015 15:18 UTCUwe Kolitsch Manager

The ref. for the uranocircite is "Le Règne Minéral, Hors Série IV, 1998" (added in 2003).

17th Feb 2015 10:02 UTCJoan Rosell 🌟 Expert

Hi,


Yes, I know, uranocircite is present in Margabal, but yellow mineral under torbernite

is it uranocircite? I have analyzed yellow parts of metatorbernite specimen.


Salut

17th Feb 2015 11:46 UTCUwe Kolitsch Manager

Ok, I see.

According to the spectrum, the yellow mineral will be autunite or meta-autunite.

Autunite/meta-autunite often occurs in expitaxial intergrowths with torbernite/metatorbernite.

17th Feb 2015 19:32 UTCReiner Mielke Expert

The specimens were found in 2014 but the reference for uranocircite is 1998, was uranocircite ever confirmed in this new find? If not then maybe this http://www.mindat.org/photo-610299.html should be relabeled torbernite ( meta?) and autunite (meta?).

17th Feb 2015 20:11 UTCUwe Kolitsch Manager

Message sent.

19th Feb 2015 15:57 UTCJoan Rosell 🌟 Expert

Could be interesting to see more analysis if available...


Salut
 
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