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Allanite-(La) Magnetite & Epidote

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SCH62598

Allanite-(La) Magnetite & Epidote

Description Tabs

Description
Locality: 
Burguillos del Cerro, Badajoz, Extremadura, Spain
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 0.7 × 1.2 cm
Description

A brown allanite-La crystal is set on epidote with magnetite crystals. The crystal of allanite-La is broken one one end. Overall, the interesting thing about this small specimen is the complete and rich association of the three classic minerals from this locality.

Mineral Data
What's on the rock

Allanite-(La)

Formula: 
{CaLa}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05b
Crystal System: 
Monoclinic
Hardness: 
6.0
Streak: 
Brown
Type Locality: 
Buca della Vena Mine, Ponte Stazzemese, Stazzema, Apuan Alps, Lucca Province, Tuscany, Italy

Magnetite

Formula: 
Fe2+Fe3+2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
5.5 - 6.5
Streak: 
Black

Epidote

Formula: 
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05a
Crystal System: 
Monoclinic
Hardness: 
6.0
Streak: 
Colorless
Type Locality: 
Bourg d'Oisans, Isère, Rhône-Alpes, France...
schani

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