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Humite & Spinel

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SYM807372

Humite & Spinel

Rare Mineral

Description Tabs

Description
Locality: 
San Vito Quarry, Ercolano, Monte Somma, Somma-Vesuvius, Naples, Campania, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.4 × 1 cm
Description

Brown crystals of humite and black spinel from San Vito quarries. 

Mineral Data
What's on the rock

Humite

Formula: 
(Mg,Fe2+)7(SiO4)3(F,OH)2
Strunz: 
9.AF.50
Crystal System: 
Orthorhombic
Hardness: 
6.0
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Spinel

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