|Quadrangle map, 1:250,000-scale||TL|
|Quadrangle map, 1:63,360-scale||B-6|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The occurrence is in a drainage located about 3.9 miles west-northwest of the fork of the Kichatna River with Moose Creek and about 4.2 miles north-northeast of Kohlsaat Peak in section 2, T. 12 N., R. 19 W., of the Seward Meridian. Accurate to within about 0.25 miles.|
The Kohlsaat occurrence is defined by quartz carbonate vein and vein breccia with steeply dipping 3-10 foot (1-3 meters) thick vein zone cutting monzodiorite (William Ellis, Alaska Earth Sciences, personal communication, 2014).The local geology is composed of Jurassic to Early Cretaceous flysch sequence with local composite plutonic complexes intruding the host rock (Wilson and others, 2012).
|Geologic map unit||(, )|
|Mineral deposit model||Polymetallic vein (Cox and Singer, 1986; model 22c)|
|Mineral deposit model number||22c|
|Age of mineralization||Late Cretaceous.|
|Alteration of deposit||Quartz carbonate.|
|Workings or exploration||Mapping and sampling program executed in 2013 by Alaska Earth Resource, Inc., and Millrock Resources, Inc.; no drilling has been performed. Over 100 samples were taken and assayed. One grab sample assayed at 4.25 ppm gold and 50 ppm silver (William Ellis, Alaska Earth Sciences, personal communication, 2014).|
|Indication of production||None|
Alaska Earth Resources, Inc, and William Ellis (Alaska Earth Sciences, Alaska Earth Resources, Inc), personal communication.
Reed, B.L., and Elliott, R.L., 1970, Reconnaissance geologic map, analyses of bedrock and stream sediment samples, and an aeromagnetic map of parts of the southern Alaska Range: U.S. Geological Survey Open-file Report 70-271, 24 p., 4 sheets, scale 1:250,000.
Reed, B.L., and Nelson, S.W., 1980, Geologic map of the Talkeetna quadrangle: U.S. Geological Survey Miscellaneous Investigations Map I-1174, 1 sheet, scale 1:250,000.
Reed, B.L., Nelson, S.W., Curtin, G.C., and Singer, D.A., 1978, Mineral resources map of the Talkeetna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-870-D, 1 sheet, scale 1:250,000.
Wilson, F.H., Hults, C.P., Schmoll, H.R., Haeussler, P.J., Schmidt, J.M., Yehle, L.A., and Labay, K.A., comps., 2012, Geologic map of the Cook Inlet region, Alaska, including parts of the Talkeetna, Talkeetna Mountains, Tyonek, Anchorage, Lake Clark, Kenai, Seward, Iliamna, Seldovia, Mount Katmai, and Afognak 1:250,000-scale quadrangles: U.S. Geological Survey Scientific Investigations Map 3153, pamphlet 76 p., 2 sheets, scale 1:250,000. (Available at http://pubs.usgs.gov/sim/3153/).
|Reporters||V.C. Zinno (Alaska Earth Sciences)|
|Last report date||3/6/2014|