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Lazurite

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CHA776437

Lazurite

Classic Locality

Description Tabs

Description
Locality: 
Somma-Vesuvius, Naples Province, Campania, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.9 × 2.2 × 1.9 cm
Description

specimen with some very good azure crystals of lazurite on matrix: extremely rare in crystals to the Somma-Vesuvius.

For value the dimension of the crystals I remenber you that the photos of my specimens are taken at only 20/40 enlargement!

Mineral Data
What's on the rock

Lazurite

Variety Of: 

Haüyne

Formula: 
(Na,Ca)4-8(Al6Si6O24)(SO4,S,Cl)1-2
Strunz: 
9.FB.10
Hardness: 
5.5 - 6.0
Formula: 
Na6 Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2
Strunz: 
9.FB.10
Crystal System: 
Isometric
Hardness: 
5.0 - 5.5
Type Locality: 
Ladjuar Medam (Lajur Madan; Lapis-lazuli Mine; Lapis-lazuli deposit), Sar-e Sang (Sar Sang; Sary Sang), Koksha Valley (Kokscha Valley; Kokcha Valley), Khash & Kuran Wa Munjan Districts, Badakhshan Province (Badakshan Province; Badahsan Province), Afghanistan

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