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ATHENA

MINERALOGY

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Mineral: FREDRIKSSONITE
Formula: Mg2(Mn3+,Fe3+)BO5
Crystal System: Orthorhombic
Group: Ludwigite group
IMA Number: 1983-040
References: CM 32 (1994), 397; HB5 (2003); ZRMO 154/3 (2025), 56
Type Locality: Långban (Langban) mine, Bergslagen ore distr., Filipstad, Värmland (Varmland, Wermland), Sweden

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