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Niobokupletskite
Type Locality
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
Mineral Data
K
2
Na(Mn,Zn,Fe)
7
(Nb,Zr,Ti)
2
Si
8
O
26
(OH)
4
(O,F)
Strunz:
9.DC.05
Physical Properties
Crystal System:
Triclinic
Hardness:
3.0 - 4.0
