|Quadrangle map, 1:250,000-scale||PM|
|Quadrangle map, 1:63,360-scale||A-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The Disney prospect is located on Unga Island, approximately 1.5 miles northeast of Acheredin Lake and 3 miles west of Baralof Bay (Wilson and others, 1988, locality 35). The map site is at an elevation of 700 feet, about 0.2 mile south-southeast of the center of sec. 22, T. 57 S., R. 75 W., of the Seward Meridian. The location is accurate to within 1,200 feet.|
The Disney prospect consists of a siliceous knob 150 feet in diameter near a strong northeast-trending fault. Quartz and red jasper float are also present. The host rocks are andesite tuffs of the late Eocene to early Oligocene Popof volcanic rocks (Wilson and others, 1995). The tuffs are argillized, chloritized, and locally silicified. Trenching exposed thin quartz and jasper veins as much as 2 feet thick.The highest precious metal values obtained in grab samples are 0.20 ppm gold and 18 ppm silver. Channel samples contained as much as 0.015 ppm gold (one sample only), 0.2 ppm silver, 171 ppm lead, 106 ppm zinc, 330 ppm arsenic, and 2.8 ppm mercury (Peterson and others, 1982).
|Geologic map unit||(-160.653053319856, 55.2271669379657)|
|Mineral deposit model||Epithermal gold vein|
|Age of mineralization||Eocene or younger.|
|Alteration of deposit||The tuffs exhibit argillization, chloritization, and local silicification.|
|Workings or exploration||In 1982 UNC Teton Exploration Drilling Company collected 26 grab and 35 channel samples, and dug 3 trenches totalling 175 feet long.|
|Indication of production||None|
Additional commentsThis site is located on land patented by, or interim-conveyed to, the Aleut Corporation.
Peterson, R.J., Lemmers, J., Handverger, P., Gallagher, J., Pilcher, R., East, J., Macleod, T., Bartels. E., 1982, Geology and precious metals potential Unga, Popof, and Korovin Islands, Shumagin Group, Aleutian Chain, Alaska: UNC Teton Exploration Drilling Company report, 127 p., 5 map sheets, various scales. (Report held by the Aleut Corporation, Anchorage, Alaska.)
Wilson, F.H., Detterman, R.L., Miller, J. W., and Case, J.E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-2272, 1 sheet, scale 1:250,000.
|Last report date||1/13/2001|