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Marrite & Wurtzite

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SKY762567

Marrite & Wurtzite

Type Locality

Description Tabs

Description
Locality: 
Lengenbach Quarry, Binntal, Valais, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 1.7 × 1.7 cm
Description

Extremely rare dull grey marrite crystals (a silver lead sulphosalt) associated to brown wurtzite-2H (photo 7) from the only known locality for marrite worldwide.

Marrite is one of the rarest Lengenbach minerals.

Mineral Data
What's on the rock

Marrite

Formula: 
AgPbAsS3
Strunz: 
2.JB.15
Hardness: 
3.0
Type Locality: 
Lengenbach Quarry, Fäld (Imfeld; Im Feld; Feld), Binn Valley, Wallis (Valais), Switzerland

Wurtzite

Formula: 
(Zn,Fe)S
Strunz: 
2.CB.45
Hardness: 
3.5 - 4.0
Streak: 
Brown
Type Locality: 
San José Mine, Oruro City, Cercado Province, Oruro Department, Bolivia

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