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Bradaczekite

Type Locality
Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia
Mineral Data
NaCu4(AsO4)3
Strunz: 
8.AC.10
Physical Properties
Colour: 
Dark Blue
Hardness: 
0.0