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Monteregianite-(Y) & Narsarsukite

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BCK649867

Monteregianite-(Y) & Narsarsukite

Type Locality

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.2 × 4 × 2 cm
Description

You are bidding on a small miniature specimen with several vugs hosting rich and quite large prisms of monteregianite-Y crystals with epitaxial "tetranatrolite". Also present are a few crystals and cleavages of yellow narsarsukite. This was from an early find in 1979. WAH material. 

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

Narsarsukite

Formula: 
Na4(Ti,Fe)2[Si8O20](O,OH,F)2
Strunz: 
9.DJ.05
Hardness: 
7.0
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland

Seller Information

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