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Allanite On Quartz

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ESM505365

Allanite On Quartz

Description Tabs

Description
Locality: 
Mina Tiro Estrella, Capitan District, Lincoln County, New Mexico, United States of America
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2.4 × 2 cm
Description

Lustrous black blades of allanite on quartz

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White