|Quadrangle map, 1:250,000-scale||MG|
|Quadrangle map, 1:63,360-scale||A-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is located on a north-facing spur overlooking an unnamed tributary of the South Fork of the Kuskokwim River. It is at an elevation of 5,100 feet (1,555 m) in the NW1/4 sec. 36, T. 23 N., R. 23 W., of the Seward Meridian. The location is based on field mapping by D.N. Solie, formerly of the Alaska Division of Geological and Geophysical Surveys; at station no. 88DNS107. The occurrence corresponds to map number 35 in Bundtzen, Harris, and Gilbert (1997).|
Geologic descriptionThis unnamed occurrence is a stockwork of pyrite-galena-quartz that cuts a small granodiorite porphyry intrusion and altered dacitic tuffs. The mineralized zone occurs near the contact between igneous rocks of the Terra Cotta Volcanic Field and Lower Cretaceous Kahiltna flysch (Bundtzen, Harris, and Gilbert, 1997). No precise structural or size measurements of the mineralized zone are available. Grab samples from talus contain up to 4,000 ppm arsenic, 2,100 ppb gold, 66 ppm cobalt, 110 ppm antimony, and 550 ppm tungsten (Bundtzen, Harris, and Gilbert, 1997).
|Geologic map unit||(-153.413231237005, 62.0433866554053)|
|Mineral deposit model||Creede epithermal vein? (Cox and Singer, 1986; model 25b?).|
|Mineral deposit model number||25b?|
|Alteration of deposit||Sericite.|
|Workings or exploration||D.N. Solie discovered the mineralized area during geologic mapping for the Alaska Division of Geological and Geophysical Surveys in 1988. Grab samples from the talus contain up to 4,000 ppm arsenic, 2,100 ppb gold, 66 ppm cobalt, 110 ppm antimony, and 550 ppm tungsten (Bundtzen, Harris, and Gilbert, 1997).|
|Indication of production||None|
Bundtzen, T.K., Harris, E.E., and Gilbert, W.G., 1997, Geologic Map of the eastern McGrath quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 97-14, 34 p., 1 sheet, scale 1:125,000.
|Reporters||T.K. Bundtzen (Pacific Rim Geological Consulting)|
|Last report date||12/9/1998|