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Leifite & Elpidite

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SYM878519

Leifite & Elpidite

Rare Mineral

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
3.5 × 12.5 × 1.5 cm
Description

Very nice leifite crystal on a matrix with elpidite and calcite. 

Mineral Data
What's on the rock

Leifite

Formula: 
(Na,H2O)Na6[Be2Al2(Al,Si)Si15O39]F2
Strunz: 
9.EH.25
Hardness: 
6.0
Colour: 
Colorless
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland

Elpidite

Formula: 
Na2ZrSi6O15·3H2O
Strunz: 
9.DG.65
Crystal System: 
Orthorhombic
Hardness: 
5.0