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Humberstonite
Type Locality
Oficina Alemania, Santa Catalina, Antofagasta Province, Antofagasta Region, Chile
Mineral Data
Na
7
K
3
Mg
2
(SO
4
)
6
(NO
3
)
2
·6H
2
O
Strunz:
7.DG.10
Physical Properties
Hardness:
2.5
