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ATHENA

MINERALOGY

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Mineral: AENIGMATITE
Formula: Na2Fe2+5Ti4+Si6O20
Crystal System: Anorthic (Triclinic)
Group: Sapphirine supergroup. Aenigmatite group
IMA Number: 1967 s.p.
References: MM 33 (1964), 986; AM 59 (1974), 820; HB2/1 (1995); EJM 11 (1999), 743
Type Locality: Kangerdluarsuk, Ilímaussaq alkaline complex, Greenland

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