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Allochalcoselite

Type Locality
Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia
Mineral Data
Cu+PbCu2+5(SeO3)2Cl5O2
Strunz: 
4.JG.40
Physical Properties
Hardness: 
3.0 - 4.0