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Bornemanite

Type Locality
Yubileinaya pegmatite (Yubileinoye; Jubilejnaja), Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Mineral Data
Na6BaTi2Nb(Si2O7)2(PO4)O2(OH)F
Strunz: 
9.BE.50
Physical Properties
Hardness: 
3.5 - 4.0
Tenacity: 
brittle