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Delafossite - Cole Shaft, Bisbee, Cochise Co., Arizona, United States
(#:MINS8930)
Specimen rich of black crystals of delafossite in spherical formation set all over this specimen.
Formula :
Cu
1+
Fe
3+
O
2
System:
trigonal
Hardness:
5½
Rarity:
not common
Strunz id:IV/A.5-30 - OXIDES and HYDROXIDES
Name origin:
For the French mineralogist and crystallographer, Gabriel Delafosse (1796–1878).
Specimen weight:63 gr.
Crystal size:Sphere up to 6 mm
Overall size: 50mm x 38 mm x 25 mm
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