Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:SAMUELSONITE
Formula:(Ca,Ba)Ca8(Fe2+,Mn2+)4Al2(PO4)10(OH)2
Crystal System:Monoclinic
Strunz Nr:7/B.20-100
References:AM 60 (1975), 957; HB4 (2000)
Type Locality:Palermo Nr 1 pegmatite, North Groton, Grafton Co., New Hampshire, USA

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