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Bykovaite
Type Locality
Shkatulka pegmatite, Umbozero mine (Umbozerskii mine; Umba Mine), Alluaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Mineral Data
(Ba,Na,K)
2
(Na,Ti,Mn)
4
(Ti,Nb)
2
(Si
2
O
7
)
2
O
2
(H
2
O,F,OH)
2
·3.5H
2
O
Strunz:
9.BE.55
Physical Properties
Hardness:
3.0
