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Lokkaite-(Y) Adamsite-(Y) & Thalénite-(Y)

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SER622730

Lokkaite-(Y) Adamsite-(Y) & Thalénite-(Y)

Description Tabs

Description
Locality: 
Hundholmen, Tysfjord, Nordland, Norway
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.1 × 0.9 cm
Description

White rounded lokkaite-(Y) crystals on thalénite-(Y) and with white tufts of adamsite-(Y)

Mineral Data
What's on the rock

Lokkaite-(Y)

Formula: 
Ca(Y,Gd,Nd,Dy)4(CO3)7·9H2O
Strunz: 
5.CC.15
Crystal System: 
Orthorhombic
Hardness: 
0.0
Streak: 
white
Type Locality: 
Pyörönmaa pegmatite, Kangasala, Western and Inner Finland Region, Finland

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