Summary: Two fergusonite concentrates from different localities in the Jos area of Northern Nigeria have been analysed by the complete lead method and are accepted as having a mean age of 159±25 m.y.
Mineralogical Magazine; March 1962 v. 33; no. 256; p. 48-51; DOI: 10.1180/minmag.1962.033.256.07
© 1962, The Mineralogical Society
Mineralogical Society (www.minersoc.org)