|Quadrangle map, 1:250,000-scale||LG|
|Quadrangle map, 1:63,360-scale||A-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Cobb (1972, MF-413), loc. 49; SW1/4NE1/4 sec. 22, T. 3 N., R. 2 E., of the Fairbanks Meridian. This prospect is near the head of Too Much Gold Creek, a tributary to upper Fairbanks Creek, at an elevation of 1,625 feet. Accuracy is within 1,000 feet.|
By 1911, several prospect pits were reported along a 7-foot-wide mineralized zone containing $10 to $20 gold per ton (0.5 to 0.9 ounces of gold per ton) and $15 to $30 silver per ton (30 to 60 ounces of silver per ton, Brooks, 1911). A second shear contained chiefly galena with about $5 gold per ton (0.25 ounces of gold per ton). An unspecified amount of ore from the Excelsior prospect was custom milled in Fairbanks by 1911; however, production figures are not available.
By 1912, a southern adit 70 feet long and a northern adit 60 feet long had been driven. Both adits are located on the right-limit wall of Too Much Gold Creek. The shear averages 12 feet wide in the adits, and trends east-west with a steep south dip (Times Publishing Company, 1912; Smith, 1913; B 525). The ore in the adit contained 22 ounces of silver per ton. In the 70 foot adit, a drift had been turned off to the south on a crosscutting shear zone. The country rock in both adits consists of hard quartzite with lesser black carbonaceous schist (Smith, 1913; B 525). High silver grades in the northern adit are in carbonaceous schist that contains minor galena, arsenopyrite and stibnite. Above the Excelsior adits, exposures of fine grained quartz porphyry granite appear to be related to the mineralization in the Excelsior adits. This rock contains small cavities surrounded by limonite after sulfides. Although iron staining is pervasive in this rock, no metallic minerals were noted (Smith, 1913; B 525).The Excelsior prospect was examined in 1916 to determine if commercial quantities of antimony existed; however, insufficient quantities were found to warrant exploration and development (Brooks, 1916; B 649). The Excelsior prospect was again examined in 1942 to determine if commercial quantities of antimony existed, however insufficient quantities were found to warrant exploration and development (Killeen and Mertie, 1951).
|Geologic map unit||(-147.317448079465, 65.0705790731875)|
|Mineral deposit model||Polymetallic vein (Cox and Singer, 1986; model 22c).|
|Mineral deposit model number||22c|
|Workings or exploration||By 1912, a southern adit 70 feet long and a northern adit 60 feet long had been driven. Both adits are located on the right limit wall of Too Much Gold Creek. In the 70 foot adit, a drift was driven to the south on a crosscutting shear zone (Smith, 1913; B 525).|
|Indication of production||Undetermined|
|Production notes||An unspecified amount of ore from the Excelsior prospect was custom milled in Fairbanks by 1911; however, production figures are not available (Brooks, 1911).|
Brooks, A.H., 1911, The mining industry in 1910, in Brooks, A.K., and others, Mineral resources of Alaska, report on progress of investigations in 1910: U.S. Geological Survey Bulletin 480-B p. 21-43.
Chapman, R.M., and Foster, R.L., 1969, Lode mines and prospects in the Fairbanks district, Alaska: U.S. Geological Survey Professional Paper 625-D, 25 p., 1 plate.
Cobb, E.H., 1972, Metallic mineral resources map of the Livengood quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-413, 2 sheets, scale 1:250,000.
Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Livengood quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-819, 241 p.
Freeman, C.J., 1992, 1991 Golden Summit project final report, volume 2: Historical summary of lode mines and prospects in the Golden Summit project area, Alaska: Avalon Development Corp., 159 p. (Report held by Freegold Recovery Inc. USA, Vancouver, British Columbia.)
Killeen, P.L., and Mertie, J.B., 1951, Antimony ore in the Fairbanks District, Alaska: U.S. Geological Survey Open-File Report 51-46, 43 p.
Smith, P.S., 1913, Lode mining near Fairbanks, in Prindle, L.M., A geologic reconnaissance of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Bulletin 525, p. 153-216.
Times Publishing Company, 1912, Tanana Magazine, Quartz Edition: Fairbanks, Alaska, Times Publishing Company, 76 p.
|Reporters||C.J. Freeman, J.R. Guidetti Schaefer (Avalon Development Corporation)|
|Last report date||5/4/1999|