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Umbozerite

Type Locality
Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Mineral Data
Na3Sr4Th[Si(O,OH)3-4]8
Strunz: 
9.HG.15
Physical Properties
Crystal System: 
Amorphous
Hardness: 
5.0