ATHENA MINERALOGY |
Mineral: | HEFTETJERNITE |
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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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