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Niobokupletskite

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CSL152299

Niobokupletskite

Type Locality

Description Tabs

Description
Locality: 
Mont Saint-Hilaire, Montérégie, Québec, Canada
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.3 × 5 × 3.2 cm
Description

Nioboupletskite is the niobium dominant analogue of kupletskite, forms free standing golden-brown lamellar crystals on feldspar matrix. There's also a large cleavage of niobokupletskite on the specimen, frozen into feldspar matrix. Very rare one locality species from Mount Saint Hilaire. Great small cabinet specimen.

Mineral Data
What's on the rock

Niobokupletskite

Formula: 
K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F)
Strunz: 
9.DC.05
Crystal System: 
Triclinic
Hardness: 
3.0 - 4.0
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
Loranth Minerals

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