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Chalcopyrite on Tetrahedrite

#65516
Chalcopyrite from Herodsfoot mine, Liskeard, Cornwall, England - 65516
Chalcopyrite from Herodsfoot mine, Liskeard, Cornwall, England - 65516

Chalcopyrite on Tetrahedrite

#65516
Availability
Available
Price
$650.00
Size
8 x 4.5 x 5 cm - Sm Cabinet 
Reduced Price
$500.00
Formula
Cu1+Fe3+S2 (RRUFF)
Locality
Herodsfoot mine, Liskeard, Cornwall, England
Tagged
sulfide , copper

This is an old-timer specimen highly sought after locality, which has produced such nice specimens as this one. Chalcopyrite has coated or overgrown Tetrahedrite crystals which measure up to 7mm.

Chalcopyrite

Formula
Cu1+Fe3+S2 
Crystal System
Tetragonal 
Crystal Habit
Euhedral Crystals, Striated, Druse 
Cleavage
Indistinct, None, None 
Luster
Metallic 
Color
brass yellow, honey yellow 
Streak
greenish black 
Class
Tetragonal - Scalenohedral 
Fracture
Brittle 
Hardness
3.5 

Data courtesy of Webmineral.

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