Facts
- Symbol
- Ru
- Atomic number
- 44
- Atomic mass
- 101.1 u
- Minerals
- 10
- Period
- 5
- Group
- 8
- Block
- d
- Melting point
- 2,607 °C
- Boiling point
- 4,423 °C
- Discovered
- 1844
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q1086
Minerals containing this element · 10
| Mineral | Chemical formula | Crystal system | Mohs hardness | Density |
|---|---|---|---|---|
| Anduoite | RuAs₂ | Orthorhombic | — | 8.23 g/cm³ |
| Hexaferrum | (Fe,Os,Ru,Ir) | Hexagonal | — | — |
| Hexamolybdenum | (Mo,Ru,Fe,Ir,Os) | Hexagonal | — | — |
| Iridarsenite | (Ir,Ru)As₂ | Monoclinic | — | 10.90 g/cm³ |
| Laurite | RuS₂ | Cubic | — | 6.15 g/cm³ |
| Omeiite | (Os,Ru)As₂ | Orthorhombic | 7.0 | — |
| Ruarsite | (Ru,Os)AsS | Monoclinic | — | — |
| Ruthenarsenite | (Ru,Ni)As | — | — | 10.00 g/cm³ |
| Rutheniridosmine | (Ir,Os,Ru) | Hexagonal | — | 20.49 g/cm³ |
| Ruthenium (native) | Ru | Hexagonal | — | — |