koppite

[Named after Prof. Kopp, of Heidelberg, by Knop; suff. -ite ( Min. ).] Min.: An isometric mineral, occurring as small brown, transparent octahedrons, in a granular limestone, near Schelingen, Kaiserstuhl, Baden. Formerly regarded as Pyrochlore (q. v.), but it differs from that mineral in containing no titanic acid and little or no fluorine. Composition: A columbate of various protoxides, but principally those of Cerium, Calcium, Lanthanum and Didymium. kor-arf-ve-ite, s. [KORARFVETITE.]