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ATHENA

MINERALOGY

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Mineral: HEFTETJERNITE
Formula: (Sc,Sn4+,Mn2+)(Ta,Nb)O4
Crystal System: Monoclinic
Group: Columbite supergroup. Wolframite group
IMA Number: 2006-056
References: EJM 22 (2010), 309; MM 87 (2023), 18
Type Locality: Heftetjern pegmatite, Tørdal (Tordal), Telemark, Norway

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