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Armbrusterite
Type Locality
Kukisvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Mineral Data
K
5
Na
7
Mn
15
[(Si
9
O
22
)
4
](OH)
10
·4H
2
O
Strunz:
9.EG.65
Physical Properties
Hardness:
3.5
