Facts
- Symbol
- Ta
- Atomic number
- 73
- Atomic mass
- 180.9 u
- Minerals
- 67
- Period
- 6
- Group
- 5
- Block
- d
- Melting point
- 5,425 °C
- Boiling point
- 9,797 °C
- Discovered
- 1802
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q1123
Minerals containing this element · 67
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Alumotantite | AlTaO₄ | Orthorhombic | — | 7.51 g/cm³ |
| Bismutotantalite | BiTaO₄ | — | — | 9.07 g/cm³ |
| Calciosamarskite | (Ca,Fe,Y)(Nb,Ta,Ti)O₄ | — | — | — |
| Calciotantite | CaTa₄O₁₁ | Hexagonal | — | 7.55 g/cm³ |
| Cesplumtantite | (Cs,Na)₂(Pb,Sb³⁺)₃Ta₈O₂₄ | — | — | — |
| Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆ | Orthorhombic | — | — |
| Ferrotitanowodginite | Fe²⁺TiTa₂O₈ | — | — | — |
| Ferrowodginite | Fe²⁺Sn⁴⁺Ta₂O₈ | — | — | — |
| Fersmite | (Ca,Ce,Na)(Nb,Ta,Ti)₂(O,OH,F)₆ | — | — | — |
| Fluorcalciomicrolite | (Ca,Na,☐)₂Ta₂O₆F | Cubic | — | 6.16 g/cm³ |
| Fluornatromicrolite | (Na₁.₅Bi₀.₅)Ta₂O₆F | Cubic | 5.0 | — |
| Formanite-(Y) | YTaO₄ | Tetragonal | — | 7.52 g/cm³ |
| Holtite | (Ta₀.₆☐₀.₄)Al₆BSi₃O₁₈ | — | — | — |
| Huangshanite | Fe³⁺TaO₄ | Monoclinic | — | — |
| Hydrokenomicrolite | (☐,H₂O)₂Ta₂(O,OH)₆(H₂O) | Cubic | — | 6.67 g/cm³ |
| Hydroxycalciomicrolite | Ca₁.₅Ta₂O₆(OH) | Cubic | — | 6.18 g/cm³ |
| Hydroxykenomicrolite | (☐,Na,Sb³⁺)₂Ta₂O₆(OH) | — | — | — |
| Irtyshite | Na₂(Ta,Nb)₄O₁₁ | Hexagonal | — | — |
| Iwashiroite-(Y) | Y(Ta,Nb)O₄ | Monoclinic | — | — |
| Ixiolite | (Ta,Mn,Nb)O₂ | Orthorhombic | — | — |
| Ixiolite-(Sc) | (Ta₀.₅Sc₀.₅)O₂ | Orthorhombic | — | — |
| Jedwabite | Fe₇Ta₃ | Hexagonal | 6.5 | — |
| Kenomicrolite | ◻₂Ta₂[O₄(OH)₂]◻ | Cubic | — | — |
| Kenoplumbomicrolite | (Pb,☐)₂Ta₂O₆(☐,OH,O) | Cubic | — | — |
| Kimrobinsonite | (Ta,Nb)(OH)₅-₂x(O,CO₃)x ; x near ₁.₂ | — | — | — |
| Koragoite | (Mn²⁺,Fe³⁺)₃(Nb,Ta,Ti)₂(Nb,Mn)₂(W,Ta)₂O₂₀ | Monoclinic | — | — |
| Liandratite | U(Nb,Ta)₂O₈ | Trigonal | 3.5 | — |
| Lithiotantite | LiTa₃O₈ | — | — | — |
| Loranskite-(Y) | (Y,Ce,Ca)(Zr,Ta)₂O₆ | — | — | — |
| Natrotantite | Na₂Ta₄O₁₁ | Trigonal | — | 7.67 g/cm³ |
| Nioboaeschynite-(Y) | (Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)₂(O,OH)₆ | Orthorhombic | — | — |
| Niobocarbide | (Nb,Ta)C | Cubic | — | — |
| Olmsteadite | KFe²⁺₂(Nb₅+,Ta₅+)(PO₄)₂O₂ * 2H₂O | — | 4.0 | — |
| Oxybismutomicrolite | (Bi₁.₃₃☐₀.₆₇)Ta₂O₆O | Cubic | — | — |
| Oxycalciomicrolite | Ca₂Ta₂O₇ | Cubic | — | — |
| Oxynatromicrolite | (Na,Ca,U)₂(Ta,Nb)₂O₆(O,F) | Cubic | — | — |
| Oxystannomicrolite | Sn₂Ta₂O₆O | Cubic | — | — |
| Oxystibiomicrolite | (Sb³⁺,Ca)₂Ta₂O₆O | Cubic | 5.5 | — |
| Petscheckite | UFe(Nb,Ta)₂O₈ | — | — | — |
| Písekite-(Y) | (Y,As,Ca,Fe,U)(Nb,Ti,Ta)O₄ | — | — | — |
| Rankamaite | (Na,K)₃(Ta,Nb,Al)₁₁(O,OH)₃₁ | Orthorhombic | — | — |
| Rossovskyite | (Fe³⁺,Ta)(Nb,Ti)O₄ | Monoclinic | — | — |
| Rynersonite | CaTa₂O₆ | — | — | 7.37 g/cm³ |
| Schiavinatoite | (Nb,Ta)(BO₄) | Tetragonal | — | — |
| Simpsonite | Al₄Ta₃O₁₃(OH) | Trigonal | 7.5 | — |
| Sosedkoite | (K,Na)₅Al₂(Ta,Nb)₂₂O₆₀ | — | — | — |
| Stibiotantalite | Sb³⁺TaO₄ | — | — | — |
| Takanawaite-(Y) | YTaO₄ | Monoclinic | — | 7.52 g/cm³ |
| Tantalaeschynite-(Ce) | Ce(TiTa)O₆ | Orthorhombic | — | — |
| Tantalaeschynite-(Y) | Ce(TiTa)O₆ | Orthorhombic | — | — |
| Tantalcarbide | TaC | Cubic | — | 14.37 g/cm³ |
| Tantalite-(Fe) | Fe²⁺Ta₂O₆ | Orthorhombic | — | — |
| Tantalite-(Mg) | MgTa₂O₆ | Orthorhombic | — | 7.79 g/cm³ |
| Tantalite-(Mn) | Mn²⁺Ta₂O₆ | Orthorhombic | — | — |
| Tantalowodginite | (Mn☐)TaTa₂O₈ | — | — | — |
| Tanteuxenite-(Y) | Y(Ta,Nb,Ti)₂(O,OH)₆ | — | — | — |
| Tantite | Ta₂O₅ | Triclinic | — | — |
| Tapiolite-(Fe) | (Fe,Mn)(Ta,Nb)₂O₆ | Tetragonal | — | — |
| Tapiolite-(Mn) | Mn²⁺Ta₂O₆ | Tetragonal | — | — |
| Thoreaulite | (Sn²⁺,Pb)(Ta,Nb)₂O₆ | — | — | — |