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ATHENA

MINERALOGY

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Mineral:HELLANDITE-(Yb)
Formula:(Ca,Y)4(Yb,Y)2(Al,Fe3+,Ti4+)(Be,Li)2B4Si4O22(O,F,OH)2 (?)
Crystal System:Monoclinic
Strunz Nr:8/F.36-08
Group:Hellandite group
References:HB2/1 (1995); L 11(1999), 27
Type Locality:Lindvikskollen dike, Kragerø (Kragero), Telemark, Norway

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