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Perrierite-(La) & Loparite

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SKY773865

Perrierite-(La) & Loparite

Rare Mineral

Description Tabs

Description
Locality: 
Buer, Bjørkedalen, Porsgrunn, Vestfold og Telemark, Norway
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.5 × 2 cm
Description

Black crystals of the rare lanthanum and cerium mineral perrierite-(La) asssociated to loparite and pyrochlore from Norway.

Ex.F.Bauer collection with label included.

Mineral Data
What's on the rock

Perrierite-(La)

Formula: 
(La,Ce,Ca)4(Fe,Mn2+,Mg)Fe3+2(Ti,Fe3+)2(Si2O7)2O8
Strunz: 
9.BE.70
Hardness: 
6.0 - 0.0
Colour: 
Black
Streak: 
Brown
Type Locality: 
In den Dellen quarries, Niedermendig, Mendig, Laach lake volcanic complex, Eifel, Rhineland-Palatinate, Germany

Loparite

Renamed To: 

Loparite-(Ce)

Formula: 
(Na,Ce,Ca,Sr,Th)(Ti,Nb,Fe)O3
Strunz: 
4.CC.35
Hardness: 
5.5

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