[399] Osmium-Iridium, so v.w. Osmiridium.
Brockhaus-1837: Iridium
Brockhaus-1911: Osmium · Iridium
Herder-1854: Osmium · Iridium
Lueger-1904: Osmium [1] · Osmium [2] · Iridium [1] · Iridium [2]
Meyers-1905: Osmĭum · Iridĭum
Pierer-1857: Osmium · Iridium