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- niobium
Minerals containing niobium
175 minerals
Niobium — element
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Uranopolycrase | (U,Y)(Ti,Nb,Ta)₂(O,OH)₆ | Orthorhombic | — | — |
| Veblenite | K₂☐₂Na(Fe²⁺₅Fe³⁺₄Mn₇☐)Nb₃Ti(Si₂O₇)₂(Si₈O₂₂)₂O₆(OH)₁₀(H₂O)₃ | Triclinic | — | — |
| Vigezzite | (Ca,Ce)(Nb,Ta,Ti)₂O₆ | — | — | — |
| Vuonnemite | Na₆Na₂Nb₂Na₃Ti(Si₂O₇)₂(PO₄)₂O₂(OF) | Triclinic | 2.5 | — |
| Vuoriyarvite-K | K₂(Nb,Ti)₂(Si₄O₁₂)(O,OH)₂ * 4H₂O | — | — | — |
| Xianhuaite-(Ce) | K₂CeNb₅O₁₅ | Tetragonal | — | — |
| Xianhuaite-(La) | K₂LaNb₅O₁₅ | Tetragonal | — | — |
| Yttrocolumbite-(Y) | (Y,U,Fe²⁺)(Nb,Ta)O₄ | Orthorhombic | — | — |
| Yttrotantalite-(Y) | (Y,U,Fe²⁺)(Ta,Nb)(O,OH)₄ | Orthorhombic | — | — |
| Yuksporite | K₄(Ca,Na)₁₄(Sr,Ba)₂(☐,Mn,Fe)(Ti,Nb)₄(O,OH)₄(Si₆O₁₇)₂(Si₂O₇)₃(H₂O,OH)₃ | Monoclinic | 5.0 | — |
| Yulinite | SrNb₂O₆ | Monoclinic | — | 5.04 g/cm³ |
| Zimbabweite | (Na,K)₂PbAs₄(Ta,Nb,Ti)₄O₁₈ | Orthorhombic | — | — |
| Zirsilite-(Ce) | Na₁₁-₁₂(Ce,Na)₃Ca₆Mn₃Zr₃Nb(Si₁₉O₅₅)(Si₃O₉)₂(CO₃)(OH)₃ * H₂O | Trigonal | — | — |
| Zuolinite | Ba₂Sr(Nb₄.₅Fe³⁺₀.₅)O₁₅ | Tetragonal | — | — |
| Zvyaginite | (Na☐)Nb₂Zn☐₂Ti(Si₂O₇)₂O₂[O(OH)][(OH)F](H₂O)₅ | Triclinic | — | — |