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ATHENA

MINERALOGY

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Mineral: SADANAGAITE
Formula: NaCa2(Mg3Al2)(Si5Al3)O22(OH)2
Crystal System: Monoclinic
Group: Amphibole supergroup, with (OH,F,Cl) dominant. Ca subgroup. Sadanagaite group
IMA Number: 2012 s.p.
References: AM 69 (1984), 465; MM 53 (1989), 99; HB2/2 (1995); EJM 16 (2004), 177; AM 97 (2012), 2031
Type Locality: Yuge Island and Myojin Island, Ehime Pref., Shisaka Island group, Seto inland sea, Japan

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