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ATHENA

MINERALOGY

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Mineral:SADANAGAITE
Formula:NaCa2[Fe2+3(Al,Fe3+)2]Si5Al3O22(OH)2 (?)
Crystal System:Monoclinic
Strunz Nr:8/F.10-180
Group:Amphibole group group II: calcic group
References:AM 69 (1984), 465; MM 53 (1989), 99; HB2/2 (1995)
Type Locality:Yuge Island and Myojin Island, Ehime Pref., Shisaka Island group, Seto inland sea, Japan

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