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Johillerite

Type Locality
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia
Mineral Data
Na(Mg,Zn)3Cu(AsO4)3
Strunz: 
8.AC.10
Physical Properties
Colour: 
Violet
Streak: 
White
Hardness: 
3.0
Tenacity: 
brittle