An isometric mineral, (U,Ca,Ce)2 (Nb,Ta)2 O6 (OH,F)
; pyrochlore group; radioactive; yellow-brown; with samarskite in pegmatites in
Mitchell County, NC, and at Hybla, ON, Canada. Formerly called hatchettolite.
CF: betafite
Source:
Dictionary of Mining, Mineral, and Related Terms