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Leifite Sérandite & Sphalerite

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CFL844738

Leifite Sérandite & Sphalerite

Pseudomorph

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 4 × 2 cm
Description

Unusual specimen of translucent leifite crystals associated with sphalerite pseudomorph after willemite, and serandite.  Collected by Gilles Haineault.

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

Sérandite

Formula: 
Na(Mn2+,Ca)2(HSi3O9)
Strunz: 
9.DG.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Rouma Island (Roume Island; Roma Island; Ruma Island), Los Archipelago (Los Islands), Guinea

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

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