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Shomiokite-(Y) & Thomasclarkite-(Y)

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GMN123621

Shomiokite-(Y) & Thomasclarkite-(Y)

Description Tabs

Description
Locality: 
Mont Saint-Hilaire, Montérégie, Québec, Canada
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2.4 × 2 cm
Description

White pearly tabular crystals of shomiokite Y, and some very nice transparent-yellowish prysmatic Thomasclarkite Y crystals .

Mineral Data
What's on the rock

Shomiokite-(Y)

Formula: 
Na3Y[CO3]3·3H2O
Strunz: 
5.CC.20
Hardness: 
2.0 - 3.0
Streak: 
white
Type Locality: 
Shomiokitovoe pegmatite, Umbozero mine (Umbozerskii mine; Umba Mine), Alluaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

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

Seller Information

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