pyromorphite

from WordNet (r) 3.0 (2006)

pyromorphite
    n 1: a mineral consisting of lead chloride and phosphate; a
         minor source of lead [syn: {pyromorphite}, {green lead
         ore}]

from The Collaborative International Dictionary of English v.0.48

Pyromorphite \Pyr`o*mor"phite\, n. [G. pyromorphit, from Gr. ?
   fire + morfh` form.] (Min.)
   Native lead phosphate with lead chloride, occurring in bright
   green and brown hexagonal crystals and also massive; -- so
   called because a fused globule crystallizes in cooling.
   [1913 Webster]