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Richterite & Hackmanite

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CR768003

Richterite & Hackmanite

Rare Mineral

Description Tabs

Description
Locality: 
Ladjuar Madan, Kokcha Valley, Badakhshan Province, Afghanistan
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.2 × 3.3 × 4.5 cm
Description

Large and sharp, pale yellow richterite crystals with pale pink hackmanite crystals intergrown in matrix.

Rare mineral.

Mineral Data
What's on the rock

Richterite

Formula: 
{Na}{CaNa}{Mg5}(Si8O22)(OH)2
Strunz: 
9.DE.20
Hardness: 
5.0 - 6.0
Streak: 
White
Type Locality: 
Långban, Filipstad, Värmland, Sweden

Hackmanite

Variety Of: 

Sodalite

Formula: 
Na8(Al6Si6O24)Cl2
Strunz: 
9.FB.10
Hardness: 
5.5 - 6.0
Formula: 
Na8Al6Si6O24(Cl2,S)
Hardness: 
0.0