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Magnesioferrite & Phlogopite

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SYA589844

Magnesioferrite & Phlogopite

Description Tabs

Description
Locality: 
Ohrberg Quarry, Schelingen, Freiburg, Baden-Württemberg, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 2.5 × 2.5 cm
Description

A nice cluster of metallic black magnesiferrite octahedrons and green-brown phlogopite crystals .

Mineral Data
What's on the rock

Magnesioferrite

Formula: 
MgFe3+2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
5.5 - 6.5
Streak: 
Dark red
Type Locality: 
Mt Vesuvius, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Phlogopite

Formula: 
KMg3(AlSi3O10)(OH,F)2
Strunz: 
9.EC.20
Crystal System: 
Monoclinic - Prismatic
Hardness: 
2.0 - 3.0
Streak: 
White

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