It's worth noting that the Niobium/Tantalum resource is separate...

It's worth noting that the Niobium/Tantalum resource is separate but adjacent to the CLD/Duncan resource currently mined. Great opportunity but probably needs a completely separate mining and beneficiation process. Same for the phosphates from Swan.
Some figures (a selection from the site below, TLn is total Lanthanides with Y excluded):
Central Lanthanide deposit
Total - 9.88 Mt @ 10.7% REO, 10.6% TLnO, 990 g/t Y2O3
Duncan deposit
Total - 7.62 Mt @ 10.7% REO, 4.5% TLnO, 2570 g/t Y2O3
Crown Deposit niobium, tantalum resources at January 2010 (Lynas Corp.)
indicated + inferred resource - 37.7 Mt @ 1.07% Nb2O5, 1.16% TLnO, 0.09% Y2O3, 0.3% ZrO, 0.024% Ta2O5, 7.99% P2O5;
Swan Deposit phosphate, as at March, 2011 (Lynas Corp.)
indicated + inferred resource - 77 Mt @ 13.5% P2O5.
http://portergeo.com.au/database/mineinfo.asp?mineid=mn770