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Niobokupletskite Gallery

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Niobokupletskite : K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F)

Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada

Golden-brown prismatic crystals of niobokupletskite in cavity of white K-feldspar. FOV is ~6x4.5 mm. Pavel M. Kartashov collection and photo.
 © Pavel M. KartashovPhoto ID: 137111    View Count: 288

Niobokupletskite : K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F)

Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada

A 2 mm group of Niobokupletskite crystals from the type locality at Mnt. St. Hilaire, Quebec, Canada. Specimen and photo: Knut Eldjarn.
 © Knut EldjarnPhoto ID: 54689    View Count: 424

Niobokupletskite : K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F), Catapleiite : Na2Zr[Si3O9]·2H2O, Eudialyte : Na15Ca6(Fe2+,Mn2+)3Zr3[Si25O73](O,OH,H2O)3(OH,Cl)2

Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada

Brown prismatic crystals of niobokupletskite in cavity of white K-feldspar. Associating minerals are pinkish grain of eudialyte, hexagonal plates of transparent catapleiite and aegirine. FOV is ~12x10 mm. Pavel M. Kartashov collection and photo.
 © Pavel M. KartashovPhoto ID: 137110    View Count: 232

Multiple photos availableNiobokupletskite : K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F), Franconite : Na2Nb4O11·9H2O

Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada

Modris Baum collection. FOV 3.8 x 2.6 mm. The niobokupletskite is brown, the franconite is white. Both species confirmed via EDS at ROM. EDS is only qualitative - but sufficient in this case.
Gift of RT.
The child photos give other views. No stereo this time.
Photo ID: 166220    View Count: 210

Niobokupletskite : K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F), Kupletskite : (K,Na)3(Mn,Fe)7Ti2Si8O26(OH)4F

Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada

Light brown niobokupletskite overgrowing darker brown kupletskite. Image is about 8.5 mm in length. Specimen was donated to the silent auction at the 2009 Rochester Mineralogical Symposium by Gilles Haineault, and I was the high bidder. Photo and specimen: Steve Stuart.
 © SMS 2009Photo ID: 238063    View Count: 33
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