Rare Earth Elements: A Review of Production, Processing ...
Rare Earth Elements: A Review of Production, Processing ...
Rare Earth Elements: A Review of Production, Processing ...
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<strong>Rare</strong> <strong>Earth</strong> <strong>Elements</strong> <strong>Review</strong> Appendix B – REE Mines and Mineral Deposits in the U.S.<br />
Appendix B<br />
Locations <strong>of</strong> REE-Producing Mines and REE-Containing Mineral Deposits in the U.S.<br />
State /<br />
Province Deposit Type<br />
Alaska<br />
Alkalic Igneous<br />
Map<br />
Reference<br />
No (Figure<br />
3-1) Deposit Name Status Company Comments<br />
226 Mount Prindle<br />
(Roy Creek)<br />
160 Bokan<br />
Mountain<br />
(Ross-Adams)<br />
Occurrence — Selected material contained ama 25% REE and 15%<br />
Th. LREE more abundant in the quartz-bearing<br />
syenites.<br />
Potential<br />
resource REE,<br />
Past Prod. U<br />
— REE-bearing pegmatites, dikes, and shear<br />
zones/fractures in central part <strong>of</strong> the complex and in<br />
veins in the outer parts & nearby country rocks.<br />
Produced 98,000 mt <strong>of</strong> approx. 1% U3O8. Because<br />
dikes generally < 1 m thick and mineralogically<br />
complex, econo<br />
Orris, et<br />
al. a<br />
Long, et<br />
al. b<br />
Gupta,<br />
et al. c<br />
Schüler,<br />
et al. d<br />
� — — —<br />
� � — �<br />
175 Dora Bay Prospect — — � — — —<br />
Carbonatite 77 Salmon Bay Occurrence — Veins. � � — —<br />
Other Igneous-<br />
Affiliated<br />
(including<br />
Pegmatites and<br />
Veins)<br />
312 Wolf Mountain Occurrence — — � — — —<br />
Other—<br />
753 Eagle Creek Occurrence — U, Th, and REE minerals along margins <strong>of</strong> alkaline � — — —<br />
Uncertain<br />
dikes.<br />
627 Circle Occurrence — — � — — —<br />
629 El Dorado Occurrence — Panned concentrate contained 0.029% Eu and 0.02% � — — —<br />
Creek area<br />
U.<br />
630 Fortymile Occurrence — � — — —<br />
Placer, Alluvial<br />
635<br />
636<br />
Hot Springs<br />
Iditarod<br />
Occurrence<br />
Occurrence<br />
—<br />
—<br />
Buried bench gravels.<br />
—<br />
�<br />
�<br />
—<br />
—<br />
—<br />
—<br />
—<br />
—<br />
655 McGrath Occurrence — — � — — —<br />
665 Port Clarence Occurrence — — � — — —<br />
670 Ruby Meadows Occurrence — Buried placer deposit. � — — —<br />
680 Tolovana Occurrence — — � — — —<br />
B-1