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Allanite

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CLB83727

Allanite

Description Tabs

Description
Locality: 
Marosoritse, Jafaro, Ambovombe-Androy, Androy, Madagascar
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 4.3 × 3.2 cm
Description

Good lustrous sample of this black rare earth mineral.

Mineral Data
What's on the rock

Allanite

Synonym Of: 

Allanite-(Ce)

Formula: 
{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Hardness: 
5.5 - 6.0

Allanite-(La)

Formula: 
{CaLa}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Hardness: 
6.0

Allanite-(Y)

Formula: 
{CaY}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Hardness: 
5.5 - 6.5

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