Pyrochlore

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Pyrochlore \Pyr"o*chlore\, n. [Pyro- + Gr. ? pale green.] (Min.)
     A niobate of calcium, cerium, and other bases, occurring
     usually in octahedrons of a yellowish or brownish color and
     resinous luster; -- so called from its becoming grass-green
     on being subjected to heat under the blowpipe.
     [1913 Webster]