Plumbago

Of carbon.   May also be referred to as black lead and graphite.

Used as a lubricant and as a moderator in nuclear reactors.

This concept's ID is @1~74781

Contains

  • lead 0 facts

    Mixture of graphite with clay in different degrees of hardness; the marking substance in a...

  • pencil 0 facts

    Graphite (or a similar substance) used in such a way as to be a medium of communication;...