One of the elements, a heavy, pliable, inelastic metal,
   having a bright, bluish color, but easily tarnished. It is both
   malleable and ductile, though with little tenacity, and is used for
   tubes, sheets, bullets, etc. Its specific gravity is 11.37. It is
   easily fusible, forms alloys with other metals, and is an ingredient of
   solder and type metal. Atomic weight, 206.4. Symbol Pb (L. Plumbum). It
   is chiefly obtained from the mineral galena, lead sulphide.