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Norbergite & Spinel

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SER747345

Norbergite & Spinel

Description Tabs

Description
Locality: 
Monte Somma, Vesuvius, Campania, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 0.9 × 0.5 cm
Description

some good colourless norbergite crystals on sanidine with pink spinel

Mineral Data
What's on the rock

Norbergite

Formula: 
Mg3(SiO4)(F,OH)2
Strunz: 
9.AF.40
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 6.5
Type Locality: 
Östanmossa mine, Röberg ore field, Norberg, Västmanland, Sweden

Spinel

Formula: 
MgAl2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
7.5 - 8.0
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