Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:NIOBOPHYLLITE
Formula:K2Na(Mn,Fe2+)7(Nb,Ti)2Si8O26(OH)4(F,O)
Crystal System:Anorthic (Triclinic)
Strunz Nr:8/G.12-80
Group:Astrophyllite Group
References:CM 8 (1964), 40; HB2/2 (1995); CM 41 (2003), 1
Type Locality:Ten Mile Lake, Seal Lake area, Labrador, Canada

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