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Cancrisilite Lamprophyllite & Villiaumite

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CFL1069079

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 3.5 × 2 cm
Description

Classic specimen of cancrisilite associated with lamprophyllite and villiaumite.  Collected by Gilles Haineault in 1991.

Mineral Data
What's on the rock

Cancrisilite

Formula: 
Na7(Al5Si7O24)(CO3)·3H2O
Strunz: 
9.FB.05
Crystal System: 
Hexagonal
Hardness: 
5.0
Streak: 
white
Type Locality: 
Alluaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Lamprophyllite

Formula: 
(Sr,K,Ba)2(Na,Ti,Mn2+,Fe3+)4Ti2(Si2O7)2O(O,OH,F)
Strunz: 
9.BE.25
Hardness: 
2.5
Colour: 
Yellow
Type Locality: 
Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

Villiaumite

Formula: 
NaF
Strunz: 
3.AA.20
Crystal System: 
Isometric
Hardness: 
2.0 - 2.5
Streak: 
White
Type Locality: 
Rouma Island (Roume Island; Roma Island; Ruma Island), Los Archipelago (Los Islands), Guinea

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$16
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Rest of World
$17

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