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ATHENA

MINERALOGY

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Mineral:JOHNSOMERVILLEITE
Formula:Na8Ca7(Fe2+,Mg,Mn2+)43(PO4)36
Crystal System:Rhomboedral (Trigonal)
Strunz Nr:7/A.08-10
Group:Fillowite group
References:MM 43 (1980), 833
Type Locality:Glen Cosaidh, Loch Quoich, Inverness, Scotland, United Kingdom

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