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Tennantite

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BSM55010

Tennantite

ex Philadelphia Academy of Science #23600
With Antique Label

Description Tabs

Description
Locality: 
Alte Mordgrube, Zug, Freiberg, Mittelsachsen, Saxony, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2.5 × 2 cm
Description

An interesting specimen which does contain some tennantite but the distinct cubic cleavage would suggest the possible presence of galena as the dominant mineral but it displays an unusual foliate habit and in places a reddish tinge.

The real interest is in associated labels which confirm the acquisition of the specimen from Dr. Krantz an 1866.

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

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