|Quadrangle map, 1:250,000-scale||HE|
|Quadrangle map, 1:63,360-scale||C-6|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The McCall prospect is at an elevation of about 2,400 feet on a northeast-trending spur above the headwaters of the Sushana River. It is in the northwest corner of sec. 19, T. 14 S., R. 11 W., of the Fairbanks Meridian. The location is accurate to within 1 mile. This is location 1 of Clark and Cobb (1972).|
Geologic descriptionLittle information about this prospect has been made public. Apparently, it consists of galena-bearing quartz-carbonate veins that cut Devonian metavolcanic schist and phyllite. Samples contain up to 55 percent lead and 6 ounces of silver per ton (Berg and Cobb, 1967).
|Geologic map unit||(-149.742295483818, 63.6895259722465)|
|Mineral deposit model||Polymetallic veins (Cox and Singer, 1986; 22c).|
|Mineral deposit model number||22c|
|Age of mineralization||The veins are Devonian or younger.|
|Workings or exploration||Minor surface workings. Samples contain up to 55 percent lead and 6 ounces of silver per ton (Berg and Cobb, 1967).|
|Indication of production||None|
Additional commentsThis site is in Denali National Park.
Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p.
Clark, A.L., and Cobb, E.H., 1972, Metallic mineral resources map of the Healy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-394, 1 sheet, scale 1:250,000.
|Reporters||N. Van Wyck (Stevens Exploration Management Corporation); F.H. Wilson (USGS)|
|Last report date||3/28/2016|