Roy Creek; Little Champion Creek Prospect, Circle Mining District, Yukon-Koyukuk Census Area, Alaska, USAi

Regional Level Types
Roy Creek; Little Champion Creek Prospect	Prospect
Circle Mining District	Mining District
Yukon-Koyukuk Census Area	Census Area
Alaska	State
USA	Country

Location: The location is the approximate center of a large claim group along the NW margin of the Mt. Prindle pluton. This record is a general description of the Mt. Prindle pluton uranium occurrences. Separate entries for individual sites are as follows: ARDF no. CI076, CI067, and CI069.
Geology: This area contains significant uranium-rare earth mineralization. There are numerous uranium prospects, uraniferous springs and stream-sediments in the area (Barker and Clautice, 1977). Mt. Prindle pluton is a tourmaline- and topaz-bearing porphyritic biotite granite that crops out over a 50-square-km area. Country rock is quartzite and micaceous quartzite with subordinate quartz-mica schist, phyllitic schist and calcareous schist, thermally metamorphosed to upper hornblende facies near the pluton contact. The pluton is cut by 3 major NE-trending faults, and several quartz porphyry, aplite and pegmatite dikes. Fissure veins containing allanite, bastnaesite, monazite, thorianite, thorite, uraninite, and xenotime occur in Cretaceous porphyritic biotite syenite and alkali granite. The deposit contains significant La, Cd, Nd, Pr, Yd, and fluorite. Hematitic alteration of wall rock and leaching of magnetite occurs in host rocks. Samples contain up to 0.1 percent U-308 and 15 percent rare-earth elements (Burton, 1981). Some exploration and limited drilling was carried out on Little Champion Creek, but no further development has taken place. Claims were active from 1977 through at least 1981 (Menzie and others, 1983, p. 56).
Workings: Some exploration and limited drilling was carried out on Little Champion Creek, but no further development has taken place. Claims were active from 1977 through at least 1981 (Menzie and others, 1983, p. 56).
Alteration: There is hematitic alteration of wall rock and leaching of magnetite in host rocks (Burton, 1981).

Commodities (Major) - U; (Minor) - REE
Development Status: None

Other Databases

Link to USGS - Alaska:	CI051

Other Regions, Features and Areas containing this locality

References