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Allanite-(Ce) Var Allanite Group

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SHS597889

Allanite-(Ce) Var Allanite Group

ex Collection Edgar Franz ( ex Mineralien Niederlage Freiberg)

Description Tabs

Description
Locality: 
Arendal, Aust-Agder, Norway
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 3.1 × 3 cm
Description

Nice piece of allanite

Mineral Data
What's on the rock

Allanite-(Ce)

Formula: 
{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Type Locality: 
Qáqarssuatsiaq, Aluk Island, Kap Farvel, Kujalleq, Greenland

Allanite Group

Formula: 
{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Hardness: 
0.0
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