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ATHENA

MINERALOGY

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Mineral:NEPTUNITE
Formula:KNa2Li(Fe2+,Mn)2Ti2Si8O24
Crystal System:Monoclinic
Strunz Nr:8/F.37-10
Group:Neptunite group
References:AM 57 (1972), 85; L 5 (1982), 6; HB2/2 (1995)
Type Locality:Narsarsuk, Julianehaab distr., Greenland

Neptunite (6.1cm) on natrolite
Benitoite Gem Mine, San Benito Co., CA, USA
Coll. and Photo © John Veevaert, Trinity Minerals
See also: athena.unige.ch -> mineral pictures

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