Alaska
Prospect

Cosna Dome

Alaska, United States
SilverLeadTinZincAntimonyGoldCopper
⌖ Show on mapUSGS source ↗
Commodities
PrimarySilver, Lead, Tin
SecondaryZinc, Antimony, Gold, Copper
Deposit
Model47: Sn veins
Materials
Ore mineralsArsenopyrite, Cassiterite, Chalcopyrite, Galena, Pyrite, Sphalerite, Stibnite
GangueChlorite, Quartz, Sericite, Tourmaline
Geology
AlterationBurleigh (1989 [OFR 11-89]) reported sericite flakes in the vein material and wall rock, indicating hydrothermal alteration.
Economic & production
Development statusProspect
Identification
Deposit ID10307705
RegionNA
Data scoreB
Coordinates64.50857, -152.00002
References
Chapman, R.M., Yeend, W., and Patton, W.W., Jr., 1975, Preliminary reconnaissance geologic map of the western half of the Kantishna River quadrangle, Alaska: U.S. Geological Survey Open-File Report 75-351, 1 sheet, scale 1:250,000.Cobb, E.H., 1977, Placer deposit map of central Alaska: U.S. Geological Survey Open-File Report 77-168B, 64 p., 1 map, scale 1:1,000,000.Silberman, M.L., Moll, E.J., Chapman, R.M., Patton, W.W., Jr., and Connor, C.L., 1979, Potassium-argon age of granitic and volcanic rocks from Ruby, Medfra, and adjacent quadrangles, west-central Alaska, in Johnson, K.M., and Williams, J.R., eds., The United States Geological Survey in Alaska, Accomplishments during 1978: U.S. Geological Survey Circular 804-B, 58 p.Cobb, E.H., and Chapman, R.M., 1981, Mineral occurrences (other than mineral fuels and construction materials) in the Kantishna River and Ruby quadrangles, Alaska: U.S. Geological Survey Open-File Report 81-170, 94 p.Burleigh, Roger, 1989, Tin and lead-silver mineralization in the Cosna River region: U.S. Bureau of Mines Open-File Report 11-89, 19 p., 1 sheet.Patton, W.W., Jr., Box, S.E., Moll-Stalcup, E.J., and Miller, T.P., 1989, Geology of west-central Alaska: U.S. Geological Survey Open-File Report 89-554, 50 p.Clautice, K.H., Bowman, N.D., Clough, J.G., Gilbert, W.G., Kline, J.T., Smith, T.E., and Blodgett, R.B., 1993, Land selection Unit 8 (Kantishna River, Ruby, and Medfra quadrangles): References, lead isotope, geochemical and major oxide data: Alaska Division of Geological and Geophysical Surveys, 42 p., 1 sheet, scale 1:250,000.Joesting, H.R., 1943, Strategic mineral occurrences in interior Alaska, supplement to pamphlet no. 1: Alaska Territorial Department of Mines Pamphlet 2, 26 p.