File:Eudialyte, Zakharovite-1168327.jpg

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English: Eudialyte, Zakharovite
Field of view: 3.5 mm
Locality: Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada
Description: This photo shows altering eudialyte, engulfed by zakharovite. The eudialyte aggregates look like tiny “hams”, with interiors that are still pink but with exteriors that look like fatty rinds. Broken crystals show that the interiors are still quite gemmy, so the alteration is only skin-deep. For an interesting example of alteration that has progressed further, making the eudilayte look like some sort of mckelveyite group mineral, see https://www.mindat.org/photo-1168328.html. This is from the same find as https://www.mindat.org/photo-453481.html, for which the zakharovite was verified via SEM-EDS. This zakharovite is interesting because some of it appears to be altering, even to the point of becoming (possible) todorokite. (The latter is shown in https://www.mindat.org/photo-453486.html). Note: I have labeled it as "eudialyte" because "plain vanilla" eudialyte is till (2021) the only validated AGM mineral here. But not very many samples from here have been fully analyzed (e.g. va WDS), so things could change. As for what the "eudialyte" is altering to, "terskite" might be one possibility. But that's TBD - if it can.
Deutsch: Eudialyt, Zakharovit
Sichtfeld: 3,5 mm
Fundort: Steinbruch Demix-Varennes, Saint-Amable-Schwelle, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Quebec, Kanada
Beschreibung: Dieses Foto zeigt sich verändernden Eudialyt, der von Zakharovite überwachsen wird. Die Eudialytaggregate sehen aus wie winzige „Schinken“, deren Inneres noch rosa ist, deren Äußeres jedoch wie Fettschwarten aussieht. Gebrochene Kristalle zeigen, dass die Innenräume immer noch ziemlich edel sind, sodass die Veränderung nur oberflächlich ist. Ein interessantes Beispiel für eine weiter fortgeschrittene Alteration, die den Eudilayt wie eine Art Mineral der Mckelveyit-Gruppe aussehen lässt, finden Sie unter https://www.mindat.org/photo-1168328.html. Dies ist aus demselben Fund wie https://www.mindat.org/photo-453481.html, für den der Zakharovit per SEM-EDS verifiziert wurde. Dieser Zakharovite ist interessant, weil einiges davon sich zu verändern scheint, sogar bis zu dem Punkt, an dem es zu (möglichem) Todorokit wird. (Letzteres ist in https://www.mindat.org/photo-453486.html dargestellt). Hinweis: Ich habe es als "Eudialyt" bezeichnet, weil "Plain Vanilla" Eudialyte bis (2021) das einzige validierte AGM-Mineral hier ist. Aber nicht sehr viele Proben von hier wurden vollständig analysiert (z. B. va WDS), sodass sich die Dinge ändern können. Was den "Eudialyten" betrifft, könnte "Terskite" eine Möglichkeit sein. Aber das ist TBD - wenn es kann.
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Source https://www.mindat.org/photo-1168327.html (Mindat-ID MXU-VVM)
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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current13:24, 1 November 2022Thumbnail for version as of 13:24, 1 November 20224,774 × 3,214 (7.83 MB)Ra'ike (talk | contribs)== {{int:filedesc}} == {{Information |Description= {{en|Eudialyte, Zakharovite :::''Field of view:'' 3.5 mm :::''Locality:'' Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada :::''Description:'' This photo shows altering eudialyte, engulfed by zakharovite. The eudialyte aggregates look like tiny “hams”, with interiors that are still pink but with exteriors that look like fatty rinds. Broken crystal...

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