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0 item @ $0.00  

Tennantite

#PD31739

Tennantite

#PD31739
Availability
Sold
Size
7.5 x 7 x 5 cm - Sm Cabinet 
Formula
Cu12As4S13 (RRUFF)
Locality
Cornwall, England
Tagged
sulfide

An interesting specimen with hundreds of well developed crystals to 1mm on sulfide matrix. The cavity on which the crystals have formed is large and is 6x5cm across and composed mostly of Chalcocite. The rest of the matrix is sulfide, probably Chalcopyrite There is also some vugs on the backside.

Tennantite

Formula
Cu12As4S13 
Crystal System
Isometric 
Crystal Habit
Massive - Granular, Massive, Disseminated 
Cleavage
None, None, None 
Luster
Metallic 
Color
steel gray, black 
Streak
reddish gray 
Class
Isometric - Hextetrahedral 
Fracture
Hackly 
Hardness
3.5-4 

Data courtesy of Webmineral.

Collection
Phillips Collection

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