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Forsterite & Fayalite

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PDM855788

Forsterite & Fayalite

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Description
Locality: 
Lanzarote, Canary Islands, Spain
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.7 × 4.5 × 3.6 cm
Weight: 
105.00gr
Description

Specimen of “Olivine”, a dunitic enclave composed of granular bicoloured green crystals of the forsterite-fayalite series, from the typical deposit at Lanzarote.

Ex Iván Blanco collection. Found in 1988.

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Mineral Data
What's on the rock

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

Fayalite

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

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