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ATHENA

MINERALOGY

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Mineral:KEYSTONEITE
Formula:Mg0.5[Ni2+Fe3+(TeO3)3] · 4.5H2O
Crystal System:Hexagonal
Strunz Nr:4/K.10-10
Group:Zemannite group
References:EJM 7 (1995), 509; HB5 (2003)
Type Locality:Keystone mine, Magnolia distr., Boulder Co., Colorado, USA

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