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Lengenbachite

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SKY660071

Lengenbachite

Type Locality

Description Tabs

Description
Locality: 
Lengenbach Quarry, Binntal, Wallis, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1 × 0.7 cm
Description

Lengenbachite from Lengenbach, the type and only confirmed locality worldwide (jointly with the nearby Reckibach, also in the Binn valley).

It occurs as grey metallic crystals in a contrasting dolomite matrix

One of the most typical Lengenbach species of course. 

Mineral Data
What's on the rock

Lengenbachite

Formula: 
Ag4Cu2Pb18As12S39·
Strunz: 
2.HF.30
Crystal System: 
Monoclinic
Hardness: 
1.0 - 2.0
Streak: 
Black
Type Locality: 
Lengenbach Quarry, Fäld (Imfeld; Im Feld; Feld), Binn Valley, Wallis (Valais), Switzerland

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