Cobalt

You may be looking for Cobalt Corporation or Cobalt 17.

Cobalt was a mineral.

Many species had access to cobalt bombs. (PROSE: Timewyrm: Genesys ^[+]Loading...["Timewyrm: Genesys (novel)"], Iceberg ^[+]Loading...["Iceberg (novel)"], etc.)

The Sontaran explosive Cobalt Blue had no chemical or atomic kinship to actual cobalt, despite the name. (AUDIO: Old Soldiers ^[+]Loading...["Old Soldiers (BBV audio story)"])