|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 prospect is at an elevation of about 300 feet, on a bluff overlooking Popov Strait west of Red Cove ( Wilson and others, 1988, locality 45). The map site is about 0.3 mile south of hill 545, in sec. 33, T. 56 S., R. 73 W., of the Seward Meridian. The location is accurate to within 500 feet.|
The Rhodo vein system, exposed over a 400-foot vertical extent, cuts andesite of the late Eocene to early Oligocene Popof volcanic rocks (Wilson and others, 1995). The system is 4 to 5 feet thick, and consists of quartz-carbonate veins containing chalcopyrite, galena, sphalerite, and pyrite. The veins are generally fine grained with very few vugs or open-growth features. The veins are unique for this area in containing the carbonate gangue minerals calcite, rhodonite, and siderite. There may be a vertical zonation marked by increased base metals at lower elevations (Peterson and others, 1982).Eight channel samples contained as much as 0.13 ppm gold, 1.3 ppm silver, 290 ppm copper, 1,830 ppm lead, 198 ppm zinc, 310 ppm arsenic, and 0.45 ppm mercury. Six grab samples contained as much as 5.46 ppm gold, 108 ppm silver, 2,200 ppm copper, 7.88 percent lead, 8.4 percent zinc, 140 ppm arsenic, and 1.5 ppm mercury (Peterson and others, 1982).
|Geologic map unit||(-160.471313971162, 55.2894764704577)|
|Mineral deposit model||Epithermal gold vein, Polymetallic veins (Cox and Singer, 1986; model 22c)|
|Mineral deposit model number||22c|
|Age of mineralization||Eocene or younger.|
|Alteration of deposit||The wall rocks exhibit strong carbonate alteration accompanied by pyrite.|
|Workings or exploration||UNC Teton Exploration Drilling Company collected 14 samples of this deposit. Their channel samples contained as much as 0.13 ppm gold and 1.3 ppm silver; their grab samples contained as much as 5.46 ppm gold, 108 ppm silver, 2,200 ppm copper, 7.88 percent lead, 8.4 percent zinc, 140 ppm arsenic, and 1.5 ppm mercury. Earlier workers drove a short adit on the prospect (Wilson and others, 1988).|
|Indication of production||None|
Additional commentsThe 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||1/16/2001|