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Thomasclarkite-(Y) & Adamsite-(Y)

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SYM1079481

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Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 4 × 3.8 cm
Description

Nice specimen of a combination of yellow thomasclarkite-y crystals with white sprays of adamsite-y on the matrix. 

Mineral Data
What's on the rock

Thomasclarkite-(Y)

Formula: 
(Na,Ce)(Y,REE)(HCO3)(OH)3·4H2O
Strunz: 
5.DC.20
Crystal System: 
Monoclinic
Hardness: 
2.0 - 3.0
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

Adamsite-(Y)

Formula: 
NaY[CO3]2·6H2O
Strunz: 
5.CC.30
Crystal System: 
Triclinic
Hardness: 
3.0
Streak: 
White
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

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Start 07 Nov 18:00
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Shipping Information

Postage Area Price
US
$15
Rest of World
$20
Canada
$15

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