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ATHENA

MINERALOGY

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Mineral:RIEBECKITE
Formula:[]Na2(Fe2+3Fe3+2)Si8O22(OH)2
Crystal System:Monoclinic
Strunz Nr:8/F.08-50
Group:Amphibole group group IV: sodic group
References:MM 33 (1963), 625; HB2/2 (1995)
Type Locality:Socotra island, Indian Ocean, Yemen
Comments:[] = vacancy

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