Niobokupletskite Kupletskite Image
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Kupletskite
,
Niobokupletskite
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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