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Monteregianite-(Y) & Tainiolite

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GMN203372

Monteregianite-(Y) & Tainiolite

Type Locality

Description Tabs

Description
Locality: 
Mont Saint-Hilaire, Montérégie, Québec, Canada
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 4 × 2.3 cm
Description

Grey clusters of columnar crystals on matrix, with tabular tainiolite.
Much nicer than my photos convey!

Mineral Data
What's on the rock

Monteregianite-(Y)

Formula: 
(Na,K)6(Y,Ca)2Si16O38·10H2O
Strunz: 
9.EB.15
Hardness: 
3.5
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

Tainiolite

Formula: 
KLiMg2(Si4O10)F2
Strunz: 
9.EC.15
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland

Seller Information

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