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Fedorite

Type Locality
Turii alkaline Massif (Turiy massif), Turii Cape, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Mineral Data
(Na,K)2-3(Ca4Na3)Si16O38(OH,F)2·3.5H2O
Strunz: 
9.EE.80
Physical Properties
Hardness: 
0.0