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Vuonnemite

Type Locality
Vuonnemiok River Valley, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Mineral Data
Na11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH)
Strunz: 
9.BE.35
Physical Properties
Crystal System: 
Triclinic
Hardness: 
2.0 - 3.0
Tenacity: 
very brittle