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Håleniusite-(La) & Cerite-(Ce)

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SKY189696

Håleniusite-(La) & Cerite-(Ce)

Rare Mineral-Classic locality
Type Locality

Description Tabs

Description
Locality: 
Bastnäs Mines, Riddarhyttan, Skinnskatteberg, Västmanland County, Sweden
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.5 × 1.2 cm
Description

Haleniusite-(La) is a very rare mineral approved in 2003 and with strange formula (La,Ce)OF, so it is a rare earth oxifluoride. It is one locality mineral worldwide. It occurs in this sample as ochre massive aggregates associated to deep orange cerite-(Ce).

Mineral Data
What's on the rock

Håleniusite-(La)

Formula: 
(La,Ce)OF
Strunz: 
3.DE.05
Hardness: 
0.0
Type Locality: 
Bastnäs mines, Riddarhyttan, Skinnskatteberg, Västmanland, Sweden

Cerite-(Ce)

Formula: 
(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
Strunz: 
9.AG.20
Hardness: 
5.5
Type Locality: 
St Görans Mine, Bastnäs mines, Riddarhyttan, Skinnskatteberg, Västmanland, Sweden

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