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Frankamenite

Type Locality
Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Sakha Republic (Saha Republic; Yakutia), Eastern-Siberian Region, Russia
Mineral Data
K3Na3Ca5(Si12O30)(F,OH)4·H2O
Strunz: 
9.DG.90
Physical Properties
Crystal System: 
Triclinic
Hardness: 
5.5