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Fayalite & Forsterite

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MGR848730

Fayalite & Forsterite

Description Tabs

Description
Locality: 
Waw an Namus Volcano, Murzuq District, Libya
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.1 × 4.6 × 2.3 cm
Description

Polished specimen of Fayalite & Forsterite. It is also called olivin bomb.

Mineral Data
What's on the rock

Fayalite

Formula: 
Fe2+2SiO4
Strunz: 
9.AC.05
Crystal System: 
Orthorhombic
Hardness: 
7.0
Type Locality: 
Faial Island (Fayal Island), Azores District, Portugal

Forsterite

Formula: 
Mg2SiO4
Strunz: 
9.AC.05
Crystal System: 
Orthorhombic
Hardness: 
7.0
Streak: 
White
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy