| Achalaite | Fe²⁺TiNb₂O₈ | Monoclinic | — | — |
| Aeschynite-(Ce) | Ce(TiNb)O₆ | Orthorhombic | — | — |
| Aeschynite-(Nd) | Nd(TiNb)O₆ | — | — | — |
| Aeschynite-(Y) | Y(TiNb)O₆ | Orthorhombic | — | — |
| Alluaivite | Na₁₉(Ca,Mn²⁺)₆(Ti,Nb)₃Si₂₆O₇₄Cl·2H₂O | Trigonal | — | — |
| Alsakharovite-Zn | NaSrKZn(Ti,Nb)₄(Si₄O₁₂)₂(O,OH)₄·7H₂O | Monoclinic | — | — |
| Andrianovite | Na₁₂(K,Sr,Ce)₃Ca₆Mn₃Zr₃Nb(Si₂₅O₇₃)(O,H₂O,OH)₅ | Trigonal | — | — |
| Aspedamite | ☐ ₁₂(Fe²⁺₃Fe²⁺)Nb₄(ThNb₉Fe²⁺₃ Ti₄+O₄₂)(H₂O)₉(OH)₃ | Cubic | — | — |
| Barwoodite | Mn²⁺₆Nb₅+(SiO₄)₂O₃(OH)₃ | Trigonal | — | — |
| Belkovite | Ba₃(Nb,Ti)₆(Si₂O₇)₂O₁₂ | Hexagonal | — | — |
| Belyankinite | Ca₁-₂(Ti,Nb)₅O₁₂ * 9H₂O (?) | Amorphous | — | — |
| Billwiseite | Sb³⁺₅Nb₃WO₁₈ | Monoclinic | — | — |
| Bismutocolumbite | BiNbO₄ | — | — | 7.16 g/cm³ |
| Bobshannonite | KBaNa₂(Mn,Na)₈(Nb,Ti)₄(Si₂O₇)₄O₄(OH)₄(O,F)₂ | Triclinic | — | — |
| Bobtraillite | (Na,Ca)₁₃Sr₁₁(Zr,Y,Nb)₁₄(Si₃O₉)₁₀(H₂BSi₂O₉)₆·12H₂O | — | — | — |
| Bornemanite | Na₆(Na☐)Ba₂Ti₂Nb₂(Si₂O₇)₄(PO₄)₂O₄(OH)₂F₂ | Triclinic | — | — |
| Burovaite-Ca | (Na,K)₄Ca₂(Ti,Nb)₈[Si₄O₁₂]₄(OH,O)₈·12H₂O | Monoclinic | — | — |
| Bykovaite | (Ba,Na,K)₂(Na,Ti,Mn)₄(Ti,Nb)₂(Si₂O₇)₂O₂(H₂O,F,OH)₂·3.5H₂O | Monoclinic | — | — |
| Byzantievite | Ba₅(Ca,REE,Y)₂₂(Ti,Nb)₁₈(SiO₄)₄[(PO₄),(SiO₄)]₄(BO₃)₉O₂₂[(OH),F]₄₃·₁.₅H₂O | Trigonal | — | — |
| Calciomurmanite | (Na,☐)₂Ca(Ti,Mg,Nb)₄[Si₂O₇]₂O₂(OH,O)₂(H₂O)₄ | Triclinic | — | — |
| Calciosamarskite | (Ca,Fe,Y)(Nb,Ta,Ti)O₄ | — | — | — |
| Carbokentbrooksite | Na₁₁-₁₂(Na,Ce)₃Ca₆Mn₃Zr₃Nb[(Si₃O₉)₂(Si₉O₂₇)₂SiO](OH)₃(CO₃) * H₂O | Trigonal | — | — |
| Carlosbarbosaite | (UO₂)₂Nb₂O₆(OH)₂·2H₂O | Orthorhombic | — | — |
| Cesiokenopyrochlore | ☐ Nb₂(O,OH)₆Cs₁-x | Cubic | — | — |
| Changbaiite | PbNb₂O₆ | Trigonal | 5.5 | — |
| Charleshatchettite | CaNb₄O₁₀(OH)₂*₈H₂O | Monoclinic | — | — |
| Chivruaiite | Ca₄(Ti,Nb)₅(Si₆O₁₇)₂(OH,O)₅·13-14H₂O | Orthorhombic | — | — |
| Clinofergusonite-(Ce) | CeNbO₄ | — | — | 6.05 g/cm³ |
| Clinofergusonite-(Nd) | NdNbO₄ | Monoclinic | — | 6.18 g/cm³ |
| Clinofergusonite-(Y) | YNbO₄ | Monoclinic | — | 5.47 g/cm³ |
| Columbite-(Fe) | Fe²⁺Nb₂O₆ | Orthorhombic | — | — |
| Columbite-(Mg) | MgNb₂O₆ | Orthorhombic | — | 4.89 g/cm³ |
| Columbite-(Mn) | Mn²⁺Nb₂O₆ | Orthorhombic | — | — |
| Dmitryvarlamovite | Ti₂(Fe³⁺Nb)O₈ | Orthorhombic | — | — |
| Edgarite | FeNb₃S₆ | Hexagonal | — | 5.12 g/cm³ |
| Ekebergite | ThFeNb₂O₈ | Monoclinic | — | — |
| Ekplexite | (Nb,Mo)S₂·(Mg₁₋ₓAlₓ)(OH)₂₊ₓ | Trigonal | — | — |
| Epistolite | (Na☐)Nb₂Na₃Ti(Si₂O₇)₂O₂(OH)₂(H₂O)₄ | Triclinic | — | — |
| Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆ | Orthorhombic | — | — |
| Eveslogite | (Na,K,Ca,Sr,Ba)₄₈ [(Ti,Nb,Mn,Fe²⁺)₁₂Si₄₈O₁₄₄(OH)₁₂](F,OH,Cl)₁₄ | — | — | — |
| Feklichevite | Na₁₁Ca₉(Fe³⁺,Fe²⁺)₂Zr₃Nb[Si₂₅O₇₃](OH,H₂O,Cl,O)₅ | Trigonal | — | — |
| Fergusonite-(Ce) | (Ce,La,Nd)NbO₄ | Tetragonal | — | — |
| Fergusonite-(Nd) | (Nd,Ce)(Nb,Ti)O₄ | Tetragonal | — | — |
| Fergusonite-(Y) | YNbO₄ | Tetragonal | — | 5.47 g/cm³ |
| Ferrokentbrooksite | Na₁₅Ca₆(Fe,Mn)₃Zr₃NbSi₂₅O₇₃(O,OH,H₂O)₃Cl₂ | Trigonal | — | — |
| Fersmite | (Ca,Ce,Na)(Nb,Ta,Ti)₂(O,OH,F)₆ | — | — | — |
| Fluorcalciopyrochlore | (Ca,Na)₂(Nb,Ti)₂O₆F | Cubic | — | 4.34 g/cm³ |
| Fluornatropyrochlore | (Na,Pb,Ca,REE,U)₂Nb₂O₆F | Cubic | — | 5.28 g/cm³ |
| Franconite | Na₂Nb₂O₅(OH)·9H₂O | — | — | — |
| Fuyuanite | Mg₇Nb₆O₁₈(OH)₈ | Trigonal | — | — |
| Georgbarsanovite | Na₁₂(Mn,Sr,REE)₃Ca₆Fe²⁺₃Zr₃NbSi₂₅O₇₆Cl₂·H₂O | Trigonal | — | — |
| Gerasimovskite | Mn²⁺(Nb,Ti)₅O₁₂·9H₂O | Amorphous | — | — |
| Gjerdingenite-Ca | K₂Ca(Nb,Ti)₄(Si₄O₁₂)₂(O,OH)₄·6H₂O | Monoclinic | — | — |
| Gjerdingenite-Fe | K₂Fe(Nb,Ti)₄(Si₄O₁₂)₂(O,OH)₄·6H₂O | — | — | — |
| Gjerdingenite-Mn | K₂Mn(Nb,Ti)₄(Si₄O₁₂)₂(O,OH)₄·6H₂O | — | — | — |
| Gjerdingenite-Na | K₂Na(Nb,Ti)₄(Si₄O₁₂)₂(OH,O)₄·5H₂O | Monoclinic | — | — |
| Goldschmidtite | KNbO₃ | Cubic | — | 4.50 g/cm³ |
| Golyshevite | Na₁₀Ca₉Zr₃Fe₂SiNb(Si₃O₉)₂(Si₉O₂₇)₂(OH)₃(CO₃)·H₂O | Trigonal | — | — |
| Gutkovaite-Mn | CaK₂Mn(Ti,Nb)₄(Si₄O₁₂)₂(O,OH)₄·5H₂O | — | — | — |
| Haineaultite | (Na,Ca)₅Ca(Ti,Nb)₅(Si₆O₁₇)₂(OH,F)₈ * 5H₂O | — | — | — |