Niobokupletskite Kupletskite Image

Niobokupletskite Kupletskite Image
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McDougall Minerals sells high-quality mineral specimens from all over the world to collectors of all levels, from beginners to connoisseurs
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 Weinrich Minerals, A Dealer in Fine Mineral Specimens - Since 1989. We buy collections and single high quality specimens.
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 Kupletskite, Niobokupletskite

Large Kupletskite Image

Mineral: Kupletskite: K2Na(Mn,Fe++)7(Ti,Nb)2Si8O26(OH)4F  
Niobokupletskite: K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F)
Comments: Back-scattered electron image of Niobokupletskite (Nkpt) rimming kupletskite (Kpt). The zoning in the kupletskite is from Nb-poor to Nb-rich in the direction of the arrow (dark to medium gray). (CanMin v 38, p 628).
Location: Mont Saint-Hilaire, Quebec, Canada.
Scale: Scale bar 100 µ-m.
Copyright: © Canadian Mineralogist
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