Refinement of the chemistry by Ercit, T.Scott 2002. The Mess That Is “Allanite” Canadian Mineralogist, Vol.40,pp 1411-1419 reported by Peterson,R.C. and MacFarlane,D.B. 1993 has determined that the allanite from here is Ferriallanite-(ce) rather than Allanite-(ce). Subsequently shown to be Allanite-(ce) by Pavel M. Kartashov see: http://www.mindat.org/forum.php?read,7,311565,316146#msg-316146
Parham occurrence, Olden Township, Frontenac County, Ontario, Canada