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Haüyne Psm Gonnardite With Phlogopite

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BNG857148

Haüyne Psm Gonnardite With Phlogopite

Description Tabs

Description
Locality: 
Sar-e Sang, Koksha Valley, Khash & Kuran Wa Munjan Districts, Badakhshan Province, Afghanistan
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12 × 8.3 × 8.2 cm
Description

An aesthetic specimen Gonnardite partially replacing blue Hauyne incombination with phlogopite.Nice specimen from locality.

Mineral Data
What's on the rock

Haüyne

Formula: 
(Na,Ca)4-8(Al6Si6O24)(SO4,S,Cl)1-2
Strunz: 
9.FB.10
Hardness: 
5.5 - 6.0
Type Locality: 
Lake Nemi, Alban Hills, Rome Province, Latium, Italy

Gonnardite

Formula: 
(Na,Ca)2(Si,Al)5O10·3H2O
Strunz: 
9.GA.05
Hardness: 
4.0 - 5.0
Type Locality: 
La Chaux de Bergonne, Gignat, Saint-Germain-Lembron, Puy-de-Dôme, Auvergne, France

Phlogopite

Formula: 
KMg3(AlSi3O10)(OH,F)2
Strunz: 
9.EC.20
Crystal System: 
Monoclinic - Prismatic
Hardness: 
2.0 - 3.0
Streak: 
White

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