File:Arfvedsonit, Eudialyte, Microcline-289192.jpg

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Description
English: Arfvedsonite, Eudialyte, Microcline (FOV 2.2 x 2.9 mm)
Locality: Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada
Arfvedsonite is rare at STA. This small, nearly black, xl is about as good as it gets - i.e. not very good. The orange xl is "eudialyte group". So far, only plain eudialyte has been verified at STA but it's always possible other species will turn up.
Note: According to Laszlo Horvath, color is not a reliable (or even useful) guide for distinguishing eudialyte group members at MSH. So the orange color does NOT mean that it can't be just plain eudialyte at STA. In fact orange and pink/red "eudialyte" are about equally common here. From a very unusual association with (verified) epistolite,zakharovite, (verified) phillipsite-K, aegirine (some visible in the photo), serandite, polylithionite, natrolite and analcime.
Deutsch: Arfvedsonit, Eudialyt, Mikroklin (Sichtfeld 2,2 x 2,9 mm)
Fundort: Grube Demix-Varennes, Saint-Amable Schwelle, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Kanada
Date
Source http://www.mindat.org/photo-289192.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.
In some countries this may not be legally possible; if so:
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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current10:09, 18 January 2013Thumbnail for version as of 10:09, 18 January 2013791 × 1,024 (143 KB)Ra'ike (talk | contribs)== {{int:filedesc}} == {{Information |Description= {{en|Arfvedsonite, Eudialyte, Microcline (FOV 2.2 x 2.9 mm) ::Locality: Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemm...

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