North Champion

Prospect, Active?

Commodities and mineralogy

Main commodities Cu; Pb

Geographic location

Quadrangle map, 1:250,000-scale EA
Quadrangle map, 1:63,360-scale C-2
Latitude 64.5775
Longitude -141.6785
Nearby scientific data Find additional scientific data near this location
Location and accuracy The North Champion prospect covers approximately 4 square miles in the upper Bear Creek drainage about a mile southwest of hill 4460. The coordinates are the approximate center of the prospect, in the SE1/4 section 10, T. 4 S., R. 30 E., of the Fairbanks Meridian. The location is accurate. The North Champion prospect is located within Doyon, Ltd. selected or conveyed land.

Geologic setting

Geologic description

Bedrock around the North Champion prospect is predominantly Tertiary or Mesozoic diorite and granodiorite that are cut by dacite dikes. Gray quartzite is locally present. The granitic rocks have minor disseminated pyrite and pyrrhotite; fractures are commonly limonite-stained (Dashevsky and others, 1986). The North Champion prospect is delineated by lead and copper stream-sediment anomalies in the upper part of the Bear Creek drainage (WGM Inc., 1998 [DLR 98-12]). Soil sampling defined three northeast-trending zones of greater than 100 ppm lead (WGM Inc., 1998 [DLR 98-12]). The zones with as much as 882 ppm lead are 200 to 500 feet wide. The North Champion prospect is on trend with geochemical anomalies that extend northeast from the Champion II (EA049) prospect. Airborne geophysical data indicates that the North Champion prospect is on the northeast limb of a 'U'-shaped magnetic trend with granitic rocks in the middle. North Champion lies on a weak magnetic high in an area of fairly high resistivity. Champion I (EA048), Champion II (EA049), East Champion (EA047), and Oregon Creek (EA045) are base-metal prospects within 5 miles of the North Champion prospect. Lead isotopic ratios indicate a Late Cretaceous or early Tertiary age for the nearby Champion II mineralization (U.S. Bureau of Mines, 1995); this suggests a plutonic origin for at least some of the mineralization in the area.
WGM Inc. conducted a stream-sediment reconnaissance in the North Champion prospect area in 1975 and 1976, as well as reconnaissance mapping and selective soil sampling (WGM Inc., 1998 [DLR 98-12]). Three soil lines were sampled in 1996 by WGM Inc., and an airborne geophysical survey was flown in the area in 1997.
Geologic map unit (-141.680824000768, 64.5771721978671)
Mineral deposit model Cu skarn or Zn-Pb skarn (Cox and Singer, 1986; models 18b or 18c).
Mineral deposit model number 18b or 18c
Age of mineralization Lead isotope ratios indicate a Late Cretaceous or early Tertiary age for the nearby Champion II mineralization (U.S. Bureau of Mines, 1995) that is geochemically similar to that of the North Champion prospect.

Production and reserves

Workings or exploration WGM Inc. conducted a stream-sediment reconnaissance in the North Champion prospect area in 1975 and 1976, as well as reconnaissance mapping and selective soil sampling (WGM Inc., 1998 [DLR 98-12]). Three soil lines were sampled in 1996 by WGM Inc., and an airborne geophysical survey was flown in the area in 1997.
Indication of production None

Additional comments

The North Champion prospect is located within Doyon, Ltd. selected or conveyed land. For more information contact Doyon, Ltd., Fairbanks, Alaska.

References

References

Dashevsky, S.S., Nicol, D.L., and Bond, J., 1986, Mines, prospects, and geochemical anomalies on Doyon Limited regional overselection lands, Alaska, Blocks 1-8: Doyon, Ltd. Report 86-01a, 300 p. (Report held by Doyon, Ltd., Fairbanks, Alaska).
Lessman, J., and Holm, B., 1978, 1977 annual progress report, Doyon Project, Champion-Lead Creek area: Doyon, Ltd. Report 78-02. (Report held by Doyon, Ltd., Fairbanks, Alaska).
WGM Inc., 1998, Ventures Resource Alaska projects, 1997 progress report, Champion property exploration: Doyon, Ltd. Report 98-12, 64 p. (Report held by Doyon, Ltd., Fairbanks, Alaska).
Reporters M.B. Werdon; R.L. Flynn
Last report date 5/1/2002