Owl - coll. P.P. ATHENA

MINERALOGY
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Mineral:GJERDINGENITE-Na
Formula:(K,Na,Sr)2Na(Nb,Ti)4(Si4O12)2(O,OH)2 · 5H2O
Crystal System:Monoclinic
Strunz Nr:8/E.07-82
Group:Labuntsovite Group
References:CM 45 (2007), 529
Type Locality:Demix quarry, Mont Saint-Hilaire, Montréal, Québec, Canada

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