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File:Zircon-192914.jpg

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Description
English: Zircon (FOV 3.0 x 2.4 mm)
Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
Original description: This is very typical of the bi-pyramidal habit for zircon at MSH. Prismatic xls do occur but they are not common. On this xl the pyramidal faces are smooth but the small “belt” of prism faces is “pebbly” due to many tiny faces with re-entrant angles. The habits of zircon are apparently related to formation temperature and melt composition. See Lapis Nov 2011 p. 23.
Deutsch: Zirkon (Sichtfeld: 3,0 x 2,4 mm)
Fundort: Steinbruch Poudrette (Demix, Uni-Mix, Desourdy), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Kanada
Date
Source http://www.mindat.org/photo-192914.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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current11:35, 21 March 2014Thumbnail for version as of 11:35, 21 March 2014929 × 768 (352 KB)Ra'ike== {{int:filedesc}} == {{Information |Description= {{en|Zircon (FOV 3.0 x 2.4 mm) ::Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie,...

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Quelle: http://en.wikipedia.org/wiki/File:Zircon-192914.jpg