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Eirikite & Thomasclarkite-(Y)

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GMN190584

Eirikite & Thomasclarkite-(Y)

Type Locality

Description Tabs

Description
Locality: 
Mont Saint-Hilaire, Montérégie, Québec, Canada
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.7 × 4.3 × 3.2 cm
Description

Big spray of white columnar eirikite crystals, (diameter: 3.7 cm) and 4-5 yellow blocky thomasclarkite crystals in the matrix cavities.
Unique, analysed specimen.

Mineral Data
What's on the rock

Eirikite

Formula: 
KNa6Be2(Si15Al3)O39F2
Strunz: 
9.EH.25
Hardness: 
6.0 - 0.0
Streak: 
White
Type Locality: 
Eudidymite-Epididymite locality, Vesle Arøya, Langesundsfjorden, Larvik, Vestfold, Norway

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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