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Stalderite Hutchinsonite Trechmannite Imhofite

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SMM663714

Stalderite Hutchinsonite Trechmannite Imhofite

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: 
2 × 1.5 × 1 cm
Description

Stalderite is a very rare and complex sulphosalt exclusive of its renowned type locality. Many small crystals with "squared" appearance are nested on the matrix, they are showned in the SEM photo. On this rare sample, there are, all analyzed, and by SEM photographed, Hutchinsonite, Trechmannite, Imhofite and a phase unknow, UK128.  You can see the analysis and a SEM photo in the "analysis" section.  Copies of the analyzes and SEM photo of all the species are delivered together with the sample. Really a very rare sample.

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Mineral Data
What's on the rock

Stalderite

Formula: 
Tl(Cu,Ag)(Zn,Fe,Hg)2(As,Sb)2S6
Strunz: 
2.GA.40
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0
Streak: 
Brown-red
Type Locality: 
Lengenbach Quarry, Fäld (Imfeld; Im Feld; Feld), Binn Valley, Wallis (Valais), Switzerland

Hutchinsonite

Formula: 
TlPbAs5S9
Strunz: 
2.HD.45
Hardness: 
1.5 - 2.0
Type Locality: 
Lengenbach Quarry, Fäld (Imfeld; Im Feld; Feld), Binn Valley, Wallis (Valais), Switzerland

Trechmannite

Formula: 
AgAsS2
Strunz: 
2.GC.35
Hardness: 
1.5 - 2.0
Type Locality: 
Lengenbach Quarry, Fäld (Imfeld; Im Feld; Feld), Binn Valley, Wallis (Valais), Switzerland

Imhofite

Formula: 
Tl5.8As15.4S26
Strunz: 
2.HD.30
Hardness: 
2.0
Type Locality: 
Lengenbach Quarry, Fäld (Imfeld; Im Feld; Feld), Binn Valley, Wallis (Valais), Switzerland
Analysis
Analysis Report - only: Stalderite Hutchinsonite Trechmannite Imhofite
Analysis Report - only: Stalderite Hutchinsonite Trechmannite Imhofite

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