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Lazurite Psm Afghanite

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MFM769457

Lazurite Psm Afghanite

Description Tabs

Description
Locality: 
Ladjuar Madan, Kokcha Valley, Badakhshan Province, Afghanistan
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
5.5 × 7.1 × 4.9 cm
Weight: 
184.70gr
Description

A superb rare pseudomorph example of well terminated rich blue lazurite after Afghanite in combination with Pyrite from Afghanistan host to marble  matrix.

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

Afghanite

Formula: 
(Na,Ca,K)8(Al6Si6O24)(Cl2,SO4,CO3)3·0.5H2O
Strunz: 
9.FB.05
Crystal System: 
Hexagonal
Hardness: 
5.5 - 6.0
Streak: 
white
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