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ATHENA

MINERALOGY

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Mineral: WILKINSONITE
Formula: Na2Fe2+4Fe3+2Si6O20
Crystal System: Anorthic (Triclinic)
Group: Sapphirine supergroup. Aenigmatite group
IMA Number: 1988-053
References: AM 75 (1990), 694; HB2/2 (1995); NM 90-94 (1997); EJM 11 (1999), 743
Type Locality: Warrumbungle volcano, New South Wales, Australia

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