|Quadrangle map, 1:250,000-scale||CA|
|Quadrangle map, 1:63,360-scale||D-6|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The John Bull Hill hillside placer mine is on the right bank of Candle Creek, just above its confluence with Kiwalik River. The placer extends southwest from Kiwalik River parallel to Candle Creek for about a mile. The map site is in section 24, T. 6 N., R. 16 W., of the Kateel River Meridian.|
Geologic descriptionThe John Bull Hill mine is an area of extensive, hillside placers along the right bank of Candle Creek near the mouth. Data from 53 drill holes showed 15 to 60 feet of ice and muck, 0 to 18 feet of barren gravel, 0 to 25 feet of auriferous gravel, 1 to 29 feet total gravel and 0 to 13 feet of auriferous bedrock. Averages of the drillhole data are: 35.0 feet ice and muck, 4.2 feet barren gravel, 6.7 feet auriferous gravel and 3.1 feet auriferous bedrock. Three of the holes bottomed in limestone bedrock and the others bottomed in decomposed schist (Henshaw, 1909). All ground is frozen. A gold nugget worth $62.10 (Au at $20.67 per ounce) was found. Concentrates contain abundant pyrite, hematite, rutile, occasional garnet, and little magnetite.
|Geologic map unit||(-161.932695241491, 65.9093249262284)|
|Mineral deposit model||Placer Au-PGE (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||The placer has been mined since the early 1900s. Exploration was by drifting and drilling. Mining through the 1950s was mainly by hydraulic methods. All the ground in the area is frozen and requires stripping and thawing prior to mining. Since the 1980s the area has been open-cut mined by front end loaders.|
|Indication of production||Yes; medium|
|Reserve estimates||Arctic Circle Enterprises estimated gold reserves on John Bull Hill to be 8,500 ounces in 1952 (Williams, 1998).|
Bundtzen, T.K., Eakins, G.R., Green, C.B., and Lueck, L.L., 1986, Alaska's mineral industry, 1985: Alaska Division of Geological and Geophysical Surveys Special Report 39, 68 p.
Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Candle, Holy Cross, Norton Bay, Nulato, and Unalakleet quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-866, 102 p.
Eakins, G.R., Bundtzen, T.K., Lueck, L.L. Green, C.B., Gallagher, J.L., and Robinson, M.S., 1985, Alaska mineral industry, 1984: Alaska Division of Geological and Geophysical Surveys Special Report 38, 57 p.
Eakins, G.R., Bundtzen, T.K., Robinson, M.S., Clough, J.G., Green, C.B., Clautice, K.H., and Albanese M.A., 1983, Alaska's mineral industry, 1982: Alaska Division of Geological and Geophysical Surveys Special Report 31, 63 p.
Gault, H.R., Killeen, P.L., West, W.S., and others, 1953, Reconnaissance for radioactive deposits in the northeastern part of the Seward Peninsula, Alaska, 1945-47 and 1951: U.S. Geological Survey Circular 250, 31 p.
Harrington, G.L., 1919, The gold and platinum placers of the Kiwalik-Koyuk region: U.S. Geological Survey Bulletin 692-G, p. 369-400.
Henshaw, F.F., 1909, Mining in the Fairhaven precinct: U.S. Geological Survey Bulletin 379-F, p. 355-369.
Hudson, T.L., Miller, M. L., and Pickthorn, W. J., 1977, Map showing metalliferous and selected nonmetalliferous mineral deposits, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 77-796-B, 46 p., 1 sheet, scale 1:1,000,000.
Moffit, F.H., 1905, The Fairhaven gold placers, Seward Peninsula, Alaska: U.S. Geological Survey Bulletin 247, 85 p.
Smith, P.S., 1937, Mineral industry of Alaska in 1935: U.S. Geological Survey Bulletin 880-A, p. 1-95.
Williams, Anita, 1998, A summary report on the mineral resources of Candle Creek and adjacent areas in Candle, Alaska: Unpublished report prepared for Berg and Wetlesen, Gulph Mills, Pennsylvania, 18 p.
|Reporters||Anita Williams (Anchorage, AK)|
|Last report date||1/12/2000|