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Olivine Var Fayalite

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MGR957414

Olivine Var Fayalite

Classic Locality

Description Tabs

Description
Locality: 
Berezovsk Mines, Ekaterinberg, Sverdlovsk Oblast, Russian Federation
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 0.4 × 0.1 cm
Description

Very gemmy single crystal of  olivine var. Fayalite from Russia. The crystal shows a good transparency as well as a good lustre.

Mineral Data
What's on the rock

Olivine

Synonym Of: 

Olivine Group

Formula: 
(Mg,Fe2+)2SiO4
Group Parent: 
Olivine
Crystal System: 
Orthorhombic
Hardness: 
6.5 - 7
Colour: 
Yellowish green, olive green, greenish black, or reddish brown
Streak: 
White

Fayalite

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