Mineralienatlas - Fossilienatlas
4 Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate) |
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4.D Metall: Sauerstoff = 1:2 und vergleichbare |
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4.DJ Mit großen (± mittelgroßen) [Kationen]; vielgestaltige (polyhedrale) Gerüste |
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4.DJ.05 Natrotantit-Gruppe |
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Calciotantit | CaTa4O11 | hexagonal | P6322 | 622 |
Irtyshit | Na2(Ta,Nb)4O11 | hexagonal | P63/m, P63 | 6/m, 6 |
Natrotantit | Na2Ta4O11 | trigonal | R3c | 3m |
Ungursait | Ca(Ta,Nb)4O11 | hexagonal | P63, P63/m | 6, 6/m |