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Dekatriasartorite & Argentobaumhauerite

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SKY636569

Dekatriasartorite & Argentobaumhauerite

Type Locality

Description Tabs

Description
Locality: 
Lengenbach Quarry, Binntal, Valais, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.6 × 2.3 cm
Description

Outstanding metallic big crystal (about 2-3 mm) of the new mineral of the sartorite group, dekatriasartorite (IMA 2017-071) from the type and only known locality worldwide, the Lengenbach quarry, and associated in the same crystal to the also extremely rare mineral argentobaumhauerite (formerly named as baumhauerite-2a).

Analyzed specimen by SEM-EDS (ref.GH130), see copy of the analysis enclosed.

Analysis performed by Dr.Topa of the Natural History Museum Wien.

Dekatriasartorite is the latest member of the sartorite group, just approved by the IMA at the end of 2017.

Almost all six members of sartorite group are very rare (enneasartorite, heptasartorite, incomsartorite, hendekasartorite, sartorite, dekatriasartorite) but probably dekatriasartorite is the rarest of them.

Don't miss the opportunity to get this new and extreme rarity from Lengenbach !

Mineral Data
What's on the rock

Dekatriasartorite

Formula: 
TlPb58As97S204
Crystal System: 
Monoclinic
Type Locality: 
Lengenbach Quarry, Binntal, Wallis, Switzerland

Argentobaumhauerite

Formula: 
Pb11Ag(As,Sb)18S36
Strunz: 
2/E.24-15
Crystal System: 
Monoclinic
Hardness: 
3
Colour: 
Steel grey
Type Locality: 
Lengenbach Quarry, Wallis, Switzerland

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