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Fluor-dravite
Type Locality
Crabtree Mine (Big Crabtree Emerald Mine), Spruce Pine, Spruce Pine District, Mitchell Co., North Carolina, USA
Mineral Data
Na(Mg
3
)Al
6
(Si
6
O
18
)(BO
3
)
3
(OH)
3
F
Strunz:
9.CK.05
Physical Properties
Hardness:
7.0 - 0.0
Tenacity:
brittle
