|Quadrangle map, 1:250,000-scale||FB|
|Quadrangle map, 1:63,360-scale||A-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The location of this occurrence is uncertain; it may be a mile or more away from the coordinates given. Joesting (1942 [ATDM MR 194-11, p. 10]) described it as being on the divide between Lynx and Eagle Creeks, probably in the SE1/4 sec. 12, T. 10 S., R. 6 W., Fairbanks Meridian.|
Geologic descriptionThe divide between Lynx and Eagle Creeks is underlain by the California Creek Member of the Totatlanika Schist. It consists of gray quartz-orthoclase-sericite schist and augen gneiss (Wahrhaftig, 1970 [GQ 810]). In a report of antimony deposits in the Fairbanks area, Brooks (1916 [B 642-A]), states that where the lode has been opened, the limits of ore deposition appear to be within walls 3 to 4 feet apart, widening to as much as 10 feet in some places. The richest ore occurs in shoots, which appear to be pod or lens shaped. The largest of these shoots measured 40 feet in its longest dimension. The shoots are separated by an aggregate of quartz intergrown with stibnite and kidneys of stibnite, together with iron-stained fragments of the schist that form the country rock . Stibnite is the only important metallic mineral in the lode, but a little free gold and galena are also present, as well as possibly pyrite. The surface of the masses of stibnite shows considerable oxidation; secondary minerals form an incrustation half an inch or more in thickness. The larger ore shoots are composed of almost entirely stibnite with some quartz (Brooks, 1916 [B 642-A]). Antimony ore in float on the divide between Lynx Creek and Eagle Creeks was examined in 1942 by the Alaska Department of Mines (Joesting, 1942 [ATDM MR 194-11, p. 10-11]). High-grade, coarse, bladed stibnite float is scattered for 100 feet along the ridge (Joesting, 1943 [ATDM Pamph. 2]).
|Geologic map unit||(-148.630340609106, 64.0585464757314)|
|Workings or exploration||There may have been some pits dug prior to 1916. Samples of stibnite were found in float (Joesting, 1942 [ATDM MR 194-11]).|
|Indication of production||None|
Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p.
Brooks, A.H., 1916, Mineral resources of Alaska, report on progress of investigations in 1915: U.S. Geological Survey Bulletin 642, 279 p.
Cobb, E.H., 1972, Metallic mineral resources map of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-410, 1 sheet, scale 1:250,000.
Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Fairbanks quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-662, 174 p.
Hill, H.A., and Associates, Ltd., 1965, Report on the Eagle Creek antimony mine, Fairbanks: Alaska Territorial Department of Mines Miscellaneous Report 58-9, 21 p., 1 map.
Joesting, H.R., 1942, Antimony and tungsten deposits in the Fairbanks and adjacent districts: Alaska Territorial Department of Mines Miscellaneous Report 194-11, 26 p.
Joesting, H.R., 1943, Strategic mineral occurrences in interior Alaska, supplement to pamphlet No. 1: Alaska Territorial Department of Mines Pamphlet 2, 31 p.
|Reporters||J.R. Guidetti Schaefer and C.J. Freeman (Avalon Development Corporation)|
|Last report date||7/31/2001|