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ATHENA

MINERALOGY

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Mineral:HUNDHOLMENITE-(Y)
Formula:(Y,REE,Ca,Na)15(Al,Fe3+)(CaxAs3+1-x)(Si,As5+)Si6B3(O,F)48 (x = 0.78)
Crystal System:Rhomboedral (Trigonal)
Strunz Nr:8/B.33-28
Group:Vicanite group
References:MM 71 (2007), 179
Type Locality:Hundholmen, Tysfjord, Nordland County, Norway

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