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Penkvilksite

Type Locality
Yubileinaya pegmatite (Yubileinoye; Jubilejnaja), Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Mineral Data
Na4Ti2Si8O22·4H2O
Strunz: 
9.EA.60
Physical Properties
Colour: 
White
Hardness: 
5.0
Synonyms
Synonyms: 
Penkvilksit