a. A hexagonal mineral, (Ce,La,Nd)PO4 .H2 O ; speciated on
the basis of predominance of cerium, lanthanum, or neodymium; Also spelled
rhabdophanite.
b. The mineral group brockite, grayite, ningyoite, rhabdophane-(Ce),
rhabdophane-(La), rhabdophane-(Nd), and tristramite.
Source:
Dictionary of Mining, Mineral, and Related Terms