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Håleniusite-(La) & Ferriallanite-(Ce)

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JYJ664914

Håleniusite-(La) & Ferriallanite-(Ce)

Description Tabs

Description
Locality: 
Bastnäs Mines, Riddarhyttan, Skinnskatteberg, Västmanland County, Sweden
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 2.7 × 0.8 cm
Description

Yellow haleniusite-La on pinkish cerite and black ferriallanite-Ce and brochantite. 

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

Ferriallanite-(Ce)

Formula: 
{CaCe}{Fe3+AlFe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Hardness: 
6.0 - 0.0
Colour: 
black
Streak: 
brown
Type Locality: 
Neprimetnyi pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag Massif, Altai Mts, Hovd Aimag (Khovd Aimag), Mongolia