Hi goldhunter,
You didn't misread my post, but I think I didn't formulate my thoughts precise enough. I have to express myself in a foreign language. Also I am no geologist.
The only thing I wanted to state is that Argex is in a development from a miner to a TiO2-production-company with their special CTL-processing technology. For that reason I think they won't mine la Blache and/or Lac Brulé. They will concentrate on there processing technology, and will buy their feedstock - the highest grade Ilmenite- to get the best revenues.
With respect to the use of the CTL-hydrometallurgical process in processing the Magpie-ore: in my opinion The CTL-process is just designed to produce high grade pure TiO2. And the sensitivity-study showed that the economics of this technology improve when the feedstock has a higher TiO2-grade and a lower Fe/Ti -ratio.
I suppose that Magpie is not primarily a TiO2-deposit, but an iron-project with Vanadium and Titanium dioxide and Aluminium oxide as by-products.