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Jentschite

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SMM681130

Jentschite

Rare Mineral from Type Locality
Analysed

Description Tabs

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

The Jentschite is an extremely rare sulfosal of thallium, lead, arsenic and antimony, found in very few specimens, exclusively in its typical locality, the renowned quarry of Lengenbach, Switzerland. This sample shows two distinct crystals, one has a metallic appearance and the other, thinner, shows the typical red color and a perfect classical shape for this species.  The most beautiful I have ever seen of this very rare species. It's even possible to see them in the last photo of the whole sample. Comes from a scientist, among the greatest experts of this locality.

Boxed with Label
Mineral Data
What's on the rock

Jentschite

Formula: 
TlPbAs2SbS6
Strunz: 
2.HD.40
Crystal System: 
Monoclinic
Hardness: 
2.0 - 2.5
Colour: 
Black
Streak: 
Dark red
Type Locality: 
Lengenbach Quarry, Fäld (Imfeld; Im Feld; Feld), Binn Valley, Wallis (Valais), Switzerland

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