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Brochantite

Type Locality
Mednorudyanskoye Cu Deposit, Nizhnii Tagil, Sverdlovskaya Oblast', Middle Urals, Urals Region, Russia
Mineral Data
Cu4(SO4)(OH)6
Strunz: 
7.BB.25
Physical Properties
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0