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Allanite-(La) With Magnetite

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QRI796064

Allanite-(La) With Magnetite

Classic Locality

Description Tabs

Description
Locality: 
Nueva Vizcaya Mine, Burguillos del Cerro, Extremadura, Spain
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 3.1 × 2 cm
Largest Crystal: 
0.80cm
Weight: 
20.00gr
Description

A well-developed allanite crystal proudly protruding off matrix. Allanite is quite lustrous and on some tips a back illumination reveals a dark green-brown color. On the same specimens, dark metallic magnetite octahedrons decorate a long fissure.
A pretty small miniature. With a careful trimming it could be turned into a lovaly thumbnail.

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

Seller Information

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Shipping within 15 days after payment received, unless specified/agreed otherwise.

Combined shipping is possible, please inquire for details.