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Investigation of Rare-Earth and Associated Elements, Zane Hills Pluton, Northwestern Alaska.

PB92109347

Publication Date	1991
Personal Author	Barker, J. C.
Page Count	44
Abstract	Unverified reports of rare earth element (REE) concentrations in gold placers and radioactive mineral prospects in the Zane Hills were investigated by the U.S. Bureau of Mines as part of the Alaska critical minerals program. The Bureau mapped and sampled all of the reported or suspected REE occurrences. Dredge concentrates contain abundant uranothorianite, a mineral species which incorporates cerium subgroup REE. Bostonite dikes occur in conjunction with a multiphased zoned alkalic intrusion, however, no significant REE concentrations were found. The Zane Hills exhibit attractive exploration targets for uranium deposits, primarily in a sedimentary form. Gold may be found peripheral to the pluton in both placer and lode deposits. Resource potential of REE, however, appears limited to a placer by-product of REE-Zr-Ti that is recoverable only during large scale gold placer mining. Placer exploration of the lower Wheeler and Dakli Creeks is suggested.
Keywords	Rare earth minerals Zane Hills Uranium ore deposits Gold ores Maps Alaska Plutons
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries 48F - Geology & Geophysics
Corporate Authors	Bureau of Mines, Fairbanks, AK. Alaska Field Operations Center.; Alaska Univ., Fairbanks. Mineral Industry Research Lab.
Supplemental Notes	Prepared in cooperation with Alaska Univ., Fairbanks. Mineral Industry Research Lab.
Document Type	Technical Report
Title Note	Open file rept.
NTIS Issue Number	199202

Investigation of Rare-Earth and Associated Elements, Zane Hills Pluton, Northwestern Alaska.

Investigation of Rare-Earth and Associated Elements, Zane Hills Pluton, Northwestern Alaska.
PB92109347

Publication Date	1991
Personal Author	Barker, J. C.
Page Count	44
Abstract	Unverified reports of rare earth element (REE) concentrations in gold placers and radioactive mineral prospects in the Zane Hills were investigated by the U.S. Bureau of Mines as part of the Alaska critical minerals program. The Bureau mapped and sampled all of the reported or suspected REE occurrences. Dredge concentrates contain abundant uranothorianite, a mineral species which incorporates cerium subgroup REE. Bostonite dikes occur in conjunction with a multiphased zoned alkalic intrusion, however, no significant REE concentrations were found. The Zane Hills exhibit attractive exploration targets for uranium deposits, primarily in a sedimentary form. Gold may be found peripheral to the pluton in both placer and lode deposits. Resource potential of REE, however, appears limited to a placer by-product of REE-Zr-Ti that is recoverable only during large scale gold placer mining. Placer exploration of the lower Wheeler and Dakli Creeks is suggested.
Keywords	Rare earth minerals Zane Hills Uranium ore deposits Gold ores Maps Alaska Plutons
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries 48F - Geology & Geophysics
Corporate Authors	Bureau of Mines, Fairbanks, AK. Alaska Field Operations Center.; Alaska Univ., Fairbanks. Mineral Industry Research Lab.
Supplemental Notes	Prepared in cooperation with Alaska Univ., Fairbanks. Mineral Industry Research Lab.
Document Type	Technical Report
Title Note	Open file rept.
NTIS Issue Number	199202