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Tiptopite
Type Locality
Tip Top Mine (Tip Top pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USA
Mineral Data
K
2
(Na,Ca)
2
Li
3
Be
6
(PO
4
)
6
(OH)
2
·H
2
O
Strunz:
8.DA.25
Physical Properties
Hardness:
3.5
