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Planerite

Type Locality
Chernovskaya Mt, Chernaya River, Verkhnyaya Sysert', Sverdlovskaya Oblast', Middle Urals, Urals Region, Russia
Mineral Data
Al6(PO4)2(HPO4)2(OH)8·4 H2O
Strunz: 
8.DD.15
Physical Properties
Hardness: 
5.0
Tenacity: 
brittle