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Lazurite

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Watches:
CAM220336

Lazurite

Ex University of Amsterdam
With Antique Label

Description Tabs

Description
Locality: 
Marino, Alban Hills, Rome Province, Lazio, Italy
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 4.2 × 3.2 cm
Description

Light blue lazurite in matrix from the Alban Hills.
Collected by Dutch geologists in the late 1940's. Ex Geological Institute of the University of Amsterdam, Netherlands. Erroneous labeled as lazulite, should be lazurite or more correctly as variety of Haüyne.

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
Cartils Minerals

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