Birimba, №321, B.P40 Rumonge Burundi
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                            Burundi 
 
            | Chemical Formula | Ta | 
| Color | Gray, bluish-gray, or metallic | 
| Hardness | 6 – 6.5 on the Mohs scale | 
| Density | 16.6 g/cm³ | 
| Melting Point | 3,017 °C (5,463 °F) | 
| Boiling Point | 5,459 °C (9,865 °F) | 
| Crystal System | Body-centered cubic (BCC) | 
| Electrical Conductivity | Good (highly conductive) | 
| Thermal Conductivity | 57.5 W/m·K | 
| Refractive Index | N/A | 
| Luster | Metallic | 
| Appearance | Lustrous gray metal or powder | 
| Specific Gravity | 16.6 |