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Mercurian Tetrahedrite With Olivenite & Acanthite

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CLB39728

Mercurian Tetrahedrite With Olivenite & Acanthite

(Mercurian Tetrahedrite)
Classic Locality

Description Tabs

Description
Locality: 
Grosskogel, Brixlegg, Carinthia, Austria
Size Range: 
Small cabinet (7-10 cm)
Size: 
4.3 × 8 × 6 cm
Largest Crystal: 
1.30cm
Description

A very good sample from this (almost) type locality. The largest crystal really stands out and is far better in nature, real good reflecting the light. 

About the acanthite I'm not positively sure. There's a thin reflecting layer on some of the schwazite. Perhaps that's it ... Previous owner was a chemist with x-ray-facilities. So the label should be correct.

Mineral Data
What's on the rock

Mercurian Tetrahedrite

Variety Of: 

Tetrahedrite

Formula: 
Cu6[Cu4(Fe,Zn)2]Sb4S13
Strunz: 
2.GB.05
Hardness: 
3.5 - 4.0
Formula: 
(Cu,Hg)12Sb4S13
Hardness: 
0.0

Olivenite

Formula: 
Cu2(AsO4)(OH)
Strunz: 
8.BB.30
Crystal System: 
Orthorhombic
Hardness: 
3.0
Type Locality: 
Carharrack Mine, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK

Acanthite

Formula: 
Ag2S
Strunz: 
2.BA.35
Crystal System: 
Monoclinic - Prismatic
Hardness: 
2.0 - 2.5
Streak: 
lead grey
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

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