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ATHENA

MINERALOGY

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Mineral: MANGANOFERRIECKERMANNITE
Name: Mangano-ferri-eckermannite
Formula: NaNa2(Mn2+4Fe3+)Si8O22(OH)2
Crystal System: Monoclinic
Group: Amphibole supergroup, with (OH,F,Cl) dominant. Amphibole Na subgroup. Eckermannite group
IMA Number: 2012 s.p.
References: J. Min. Soc. Japan 9 (1968), 18; CM 44 (2006), 1; AM 97 (2012), 2031
Type Locality: Tanohata mine, Tanohata-mura, Shimohei District, Iwate Prefecture, Japan

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