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Mosandrite

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MCH567459

Mosandrite

Rare Mineral

Description Tabs

Description
Locality: 
Arøyskjærene, Langesundsfjorden, Larvik, Vestfold og Telemark, Norway
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.7 × 4.3 × 3.9 cm
Description

A brown crystal of mosandrite-(Ce), at least 4.5 cm in lenght, is embedded in light grey microcline. There is also some red alteration product on this sample. A rich specimen for this rare mineral.

Mineral Data
What's on the rock

Mosandrite

Formula: 
(◻,Ca,Na)3(Ca,REE)4Ti(Si2O7)2[H2O,OH,F]4·H2O
Strunz: 
9.BE.20
Hardness: 
4.0
Type Locality: 
Låven (Skådön; Lamö; Lamanskjaer), Langesundsfjorden, Larvik, Vestfold, Norway

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