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Lokkaite-(Y)

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SKY853022

Lokkaite-(Y)

Rare Mineral

Description Tabs

Description
Locality: 
Kilebygd, Skien, Vestfold og Telemark, Norway
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.4 × 1.3 × 1 cm
Description

White crystal aggregates of the very rare mineral lokkaite-(Y) from Norway.

Lokkaite-(Y) is a Gadolinium (Gd) and also a Dysprosium (Dy) mineral. Gd and Dy are extremely rare chemical elements in minerals, since only 4 mineral species of a total of 5708 mineral species known have Gd and Dy in its chemical composition !! (Lepersonnite-(Gd), Lokkaite-(Y), Mineevite-(Y) and Paraniite-(Y), source Mindat), so this species is a real oddity.

Ex Vandenbroucke Museum collection from Waregem, Belgium.

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

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