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ATHENA

MINERALOGY

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Mineral: FERROFERRIHOLMQUISTITE
Name: Ferro-ferri-holmquistite 
Formula: ▢{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2
Crystal System: Orthorhombic
Group: Amphibole supergroup, with (OH,F,Cl) dominant. Amphibole-Li subgroup. Holmquistite group
IMA Number: 2022-020
References: AM 97 (2012), 2031; EJM 34/5 (2022), 385
Type Locality: Iwagi Islet, Ehime Prefecture, Japan

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