ETM Misinformation, page-2

"..for eudialyte chemical separation. You also say... Not even refractory"
Misinformation
gbb replied= eudialyte is not refractory Post #: 69891631
Fact
"Primary, hard rock deposits with the most abundant REE minerals such as bastnäsite, monazite, xenotime, loparite, parasite, and perhaps apatite is more likely to be economical compared with those deposits with eudialyte, allanite, or zircon [11,12]. Cause the latter group are more refractory and economic processing of REE from these minerals is not currently possible.
Ariffin KS, School of Materials and Minerals Resources Engineering
Published 2019
https://crimsonpublishers.com/amms/fulltext/AMMS.000550.php

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