File:Bastnäsite-(Ce), Rhodochrosite-204288.jpg

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English: Bastnäsite-(Ce), Rhodochrosite (FOV 8 x 11.4 mm)
Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
The taller "xl" plus rhodochrosite "hat" is a bit < 2 cm tall. Via Jean-Yves Lamoureux (found July 1989). MOB coll.
This is a pseudomorph - likely after petersenite-(Ce) or another burbankite family mineral. Only XRD (and qualitative EDS? - I forget) was done but at MSH Ce dominates in all bastnäsite “group” minerals. Some areas of the “xls” look gemmy but apparently there is no relict material to prove that it was petersenite-(Ce) (rather than some other burbankite family member).
This find predates the Poudrette pegmatite PS of synchysite-(Ce) after petersenite-(Ce). The dark red/brown rhombs are rhodochrosite.
Deutsch: Bastnäsit-(Ce), Rhodochrosit (Sichtfeld 8 x 11,4 mm)
Fundort: Steinbruch Poudrette (Demix, Uni-Mix, Desourdy), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Kanada
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Source http://www.mindat.org/photo-204288.html
Author Modris Baum
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Public domain This work has been released into the public domain by its author, Modris Baum. This applies worldwide.
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Modris Baum grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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current12:12, 26 February 2013Thumbnail for version as of 12:12, 26 February 2013459 × 653 (98 KB)Ra'ike (talk | contribs)== {{int:filedesc}} == {{Information |Description= {{en|Bastnäsite-(Ce), Rhodochrosite (FOV 8 x 11.4 mm) ::Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-H...

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