|Quadrangle map, 1:250,000-scale||HE|
|Quadrangle map, 1:63,360-scale||B-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The Nenana prospect is at an elevation of about 4,800 feet, 1.75 miles west southwest of VABM 5756 (Fork). The map site is in the SW1/4 of sec. 30, T. 16 S., R. 1 E., of the Fairbanks Meridian. The location is accurate to within 1500 feet. This is location A-76 of Balen (1990: OFR 34-90).|
Geologic descriptionThe area of the Nenana prospect is underlain by Upper Triassic, thin-bedded, commonly cross-bedded, carbonaceous shale, argillite, sandstone, and siltstone. The strata are cut by numerous dikes, sills, and plugs of altered diabase and gabbro, and by Upper Cretaceous?-Lower Tertiary granites (Wilson and others, 1998). The prospect consists of pyrite?, chalcopyrite, and sphalerite disseminated in the sedimentary rocks.
|Geologic map unit||(-147.639275698031, 63.4925517529035)|
|Mineral deposit model||Besshi massive sulfide (Cox and Singer, 1986; model 24b)|
|Mineral deposit model number||24b|
|Age of mineralization||The sulfide minerals probably are syngenetic with their Upper Triassic host rocks.|
|Workings or exploration||Exploration consisted of rock-chip and soil sampling (unpublished report for the New Alaska Syndicate, 1977).|
|Indication of production||None|
Balen, M.D., 1990, Geochemical sampling results from Bureau of Mines investigations in the Valdez Creek mining district, Alaska: U.S. Bureau of Mines Open-File Report 34-90, 218 p., 2 sheets, scale 1:63,360.
|Reporters||N. Van Wyck (Stevens Exploration Management Corporation)|
|Last report date||4/7/2000|