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Monteregianite

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CFL802806

Monteregianite

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: 
6 × 4 × 2.5 cm
Description

Classic type locality specimen of monteregianite-(Y) crystals associated with biotite and kupletskite.  The Poudrette Quarry is the only locality where monteregianite-(Y) is found.  Collected by Gilles Haineault in 2003.

Mineral Data
What's on the rock

Monteregianite

Synonym Of: 

Monteregianite-(Y)

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

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