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Thalénite-(Y) & Yttrofluorite & Kainosite-(Y)

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SKY743580

Thalénite-(Y) & Yttrofluorite & Kainosite-(Y)

Rare Mineral

Description Tabs

Description
Locality: 
Ploskaya Mountain, Western Keivy Massif, Keivy Mountains, Murmansk Oblast, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2 × 2 cm
Description

Flesh pink crystals of the rare yttrium mineral thalenite-(Y) crystals associated to yttrofluorite-(Y), kainosite and zinnwaldite from Russia. 

Mineral Data
What's on the rock

Yttrofluorite

Variety Of: 

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Hardness: 
4.0
Formula: 
(Ca1-xYx)F2+x where 0.05< x <0.3
Hardness: 
0.0

Kainosite-(Y)

Formula: 
Ca2(Y,Ce)2(Si4O12)(CO3)·H2O
Strunz: 
9.CF.10
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 6.0
Type Locality: 
Igletjødn feldspar quarry (Igletjern), Hæstad, Hidra (Hitterø), Flekkefjord, Vest-Agder, Norway

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