Eastern Mineral and Environmental Resources Science Center
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Seal, R.R., 2012, Geologic and Environmental Characteristics of Rare Earth Element Deposit Types Found in North America: National Association of Remedial Project Managers (NARPM) meeting, Nov. 27, 2012, Henderson, Nevada. http://narpm.trainex.org/materials/706/02_Rare-Earth-Elements.pdf
|Mineral Resources Program||National Minerals Information / Geology, Minerals, Energy and Geophysics|
|Alaska / Crustal Geophysics and Geochemistry / Central Mineral and Environmental Resources / Spatial Data|