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MineralsBurbankite

1st Dec 2014 18:07 UTCReiner Mielke Expert

I have some micro crystals with the morphology of burbankite but they are white and hollow, pseudomorphs. Does anyone know what the replacement might be?

2nd Dec 2014 11:46 UTCPavel Kartashov Manager

Usual path of burbankite decomposition is elimination of alkalies, and formation of porous strontianite+ancylite-(Ce)+/-synchisite-(Ce) pseudomorphoses. If mineral was Ba-rich, formation of witherite or barite is possible (but I observed this only very rare and on microscale).

REE-rich members poor in Sr able to give compact synchisite-(Ce) or more rare bastnasite-(Ce) pseudomorphoses.


Decomposition of burbankites of Gornoe Ozero massif was detaily described by T.B. Zdorik. Look the 2nd and 3rd photos from the end - http://geo.web.ru/druza/a-Zdorik.htm

2nd Dec 2014 15:55 UTCReiner Mielke Expert

Thank you Pavel!
 
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