Mount Prindle (Roy Creek) (Record #226) rare-earth element deposit in Alaska, United States

Mount Prindle (Roy Creek)

Alkalic igneous rare earth element deposit in Alaska, United States

Geographic location

Country	United States
State or province	Alaska
Geographic location:	-147.1, 65.483333
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Location references

Armbrustmacher, T.J., 1989, Minor element content, including radioactive elements and rare-earth elements, in rocks from the syenite complex at Roy Creek, Mount Prindel area, Alaska: U.S. Geological Survey Open-File Report 89-146, 11p.

Geologic characteristics

Deposit type	Alkalic igneous
Age of deposit	86.7 ± 3.6 Ma 85.4 ± 6.4 Ma (K-Ar, bio)
REE minerals	allanite britholite bastnäsite monazite xenotime
Ore minerals	thorianite uraninite thorite fluorite apatite titanite magnetite
Gangue minerals	nepheline potassium feldspar aegirine augite riebeckite biotite quartz
Host rock types	syenite nepheline syenite pyroxenite

Nearby scientific information

Geologic map unit	-147.1, 65.483333333333
Other databases	Find additional scientific data near this location

Economic information

Resource estimates	5-10% REE by volume in drill core

References for resource estimates

Nokleberg, Warren J.; Bundtzen, Thomas K.; Dawson, Kenneth M.; Eremin, Roman A.; Goryachev, Nikolai A.; Koch, Richard D.; Ratkin, Vladimir V.; Rozenblum, Ilya S.; Shpikerman, Vladimir I.; Frolov, Yuri F.; Gorodinsky, Mary E.; Melnikov, Vladimir D.; Ognyanov, Nikolai V.; Petrachenko, Eugene D.; Pozdeev, Anany I.; Ross, Katherina V.; Wood, Douglas H.; Grybeck, Donald; Khanchuk, Alexander I.; Kovbas, Lidiya I.; Nekrasov, Ivan Ya.; Sidorov, Anatoly A., 1996, Significant metalliferous and selected non-metalliferous lode deposits and placer districts for the Russian Far East, Alaska, and the Canadian Cordillera: U.S. Geological Survey Open-File Report 96-513-A.

Comments

Selected material contained ama 25% REE and 15% Th. LREE more abundant in the quartz-bearing syenites.

Bibliographic references

Armbrustmacher, T.J., 1989, Minor element content, including radioactive elements and rare-earth elements, in rocks from the syenite complex at Roy Creek, Mount Prindel area, Alaska: U.S. Geological Survey Open-File Report 89-146, 11p.
Mariano, A.N., 1981b, Rare earth mineralization in Mount Prindle, Alaska: unpublished report to MAPCO INC., 35 p.
Woolley, A.R., 1987, Alkaline rocks and carbonatites of the world; Part 1, North and South America: London, United Kingdom, British Museum of Natural History, 216 p.
Mariano, A.N., 1989, Economic geology of rare earth minerals, in Lipin, B.R., and McKay, G.A., eds., Geochemistry and mineralogy of the rare earth elements: Washington, D.C., Mineralogical Society of America Reviews in Mineralogy 21, p. 309-348.
Nokleberg, Warren J.; Bundtzen, Thomas K.; Dawson, Kenneth M.; Eremin, Roman A.; Goryachev, Nikolai A.; Koch, Richard D.; Ratkin, Vladimir V.; Rozenblum, Ilya S.; Shpikerman, Vladimir I.; Frolov, Yuri F.; Gorodinsky, Mary E.; Melnikov, Vladimir D.; Ognyanov, Nikolai V.; Petrachenko, Eugene D.; Pozdeev, Anany I.; Ross, Katherina V.; Wood, Douglas H.; Grybeck, Donald; Khanchuk, Alexander I.; Kovbas, Lidiya I.; Nekrasov, Ivan Ya.; Sidorov, Anatoly A., 1996, Significant metalliferous and selected non-metalliferous lode deposits and placer districts for the Russian Far East, Alaska, and the Canadian Cordillera: U.S. Geological Survey Open-File Report 96-513-A.