|Quadrangle map, 1:250,000-scale||PM|
|Quadrangle map, 1:63,360-scale||B-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is on Unga Island approximately 4,000 feet east of Coal Harbor. The map site is at an elevation of 200 feet, 0.25 mile east-southeast of the top of hill 358, in the SW1/4 of sec. 14, T. 56 S., R. 74 W., Seward Meridian.The location is accurate to within 1,200 feet.|
Geologic descriptionThis site consists of a 200-foot long, northwest-trending quartz-pyrite stockwork. The stockwork comprises quartz veins 0.5 to 6 inches thick that contain pyrite laminations and clots. The host rock is argillically altered andesite mapped as Eocene to Oligocene Popof volcanic rocks (Wilson and others, 1995). Of 19 rock samples, two contained gold (0.04 and 0.22 ppm) and three contained mercury (0.15 to 1.55 ppm). Pan samples contained as much as 1.2 ppm gold (Ellis, 1988).
|Geologic map unit||(-160.577021533657, 55.3271758875103)|
|Mineral deposit model||Epithermal gold veins|
|Age of mineralization||Eocene or younger.|
|Alteration of deposit||The host rock exhibits argillic alteration.|
|Workings or exploration||In 1988 Battle Mountain Exploration Company examined this site and collected 19 rock, 32 soil, and 12 pan samples. Only two rock samples contained anomalous gold values (0.04 and 0.22 ppm).|
|Indication of production||None|
Additional commentsThis occurrence is located on land patented by, or interim-conveyed to, the Aleut Corporation.
Ellis, W.T., 1988, Unga/Alaska Peninsula project, 1988 report: Battle Mountain Exploration Company report, 64 p. (Report held by the Aleut Corporation, Anchorage, Alaska.)
|Last report date||2/4/2001|