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Geigerite

Type Locality
Falotta, Tinizong (Tinzen), Oberhalbstein (Surses; Sursass), Albula Valley, Grischun (Grisons; Graubünden), Switzerland
Mineral Data
Mn2+5(AsO4)2(HAsO4)2·10H2O
Strunz: 
8.CE.05
Physical Properties
Hardness: 
3.0
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