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Tablón de mensajes en Español"Nuevas especies minerales en Collserola"

8th Sep 2015 15:26 UTCUwe Kolitsch Manager

In the first issue of the magazine "El Mineralogista", there is an article

"Nuevas especies minerales en Collserola".


Some of the identifications appear questionable:


Chenevixite: The published EDS spectrum and the colour photo do not fit that expected from chenevixite (which cannot incorporate REE and S).


Conichalcite: The Ca peak in the published EDS spectrum is much too low. This may be zalesíite.


Mawbyite: The acute-rhombohedral crystal habit on the SEM photo rather indicates segnitite instead of mawbyite. Was Raman spectrum compared to that of (XRD-)analysed mawbyite? Note: minor Zn can also occur in segnitite.


Zalesíite: The published EDS spectrum suggests that the sum of REE could be larger than the Ca content (but maybe not larger than (Ca+Pb) - dominant-constituent rule might apply). Thus, this could be agardite.
 
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