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Tennantite Silver & Smithsonite

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POL845038

Tennantite Silver & Smithsonite

Classic Locality
With Antique Label

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.6 × 5.5 × 5.3 cm
Largest Crystal: 
2.90cm
Description

Very nice, old time and unusual specimen of dark grey, metallic Tennantite crystals (up to 29 mm) on massive tennantite with few vugs covered with small Smithsonite crystals. Surface of the tennantite crystals is etched a little and looks like "elephant skin". There is also some crystalised (?) spots of native Silver! (not tested). Similar specimen is also published on mindat. Comes with nice old label ("Arsenfahlerz" is old german term for Tennantite).

ex coll. Staatliche Mineralien-Niederlage Freiberg, Sa. (Saxony/Germany)

Mineral Data
What's on the rock

Tennantite

Formula: 
Cu6[Cu4(Fe,Zn)2]As4S13
Strunz: 
2.GB.05
Crystal System: 
Isometric
Hardness: 
3.0 - 4.5
Type Locality: 
Cornwall, England, UK

Silver

Formula: 
Ag
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

Smithsonite

Formula: 
ZnCO3
Strunz: 
5.AB.05
Hardness: 
4.0 - 4.5
Streak: 
White

Seller Information

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