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ATHENA

MINERALOGY

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Mineral: ECKERMANNITE
Formula: NaNa2(Mg4Al)Si8O22(OH)2
Crystal System: Monoclinic
Group: Amphibole supergroup, with (OH,F,Cl) dominant. Amphibole Na subgroup. Eckermannite group
IMA Number: 2013-136
References: HB2/1 (1995)
Type Locality: Norra Kärr, Gränna, Sweden

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