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Franconite

Na₂Nb₂O₅(OH)·9H₂O

IMA approved

成分

Composizione (% in peso)

O

Nb

Na

OOxygen48.9%
NbNiobium37.8%
NaSodium9.4%
HHydrogen3.9%

詞源

命名來源 Francon quarry.