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Allanite

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Allanite

Description Tabs

Description
Locality: 
Llano County, Texas, United States of America
Class: 
Massive/Crystalline
Size Range: 
Cabinet (10-18 cm)
Size: 
11.5 × 5.8 × 3.3 cm
Description

Massive black allanite Llano County, Texas. Historic material, no further information on the locality given. Comes with a historic label. 

 

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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