|Quadrangle map, 1:250,000-scale||VA|
|Quadrangle map, 1:63,360-scale||B-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is on Boulder Creek, about 1.4 miles upstream from its mouth on the Tiekel River. It is on the creek at an elevation of about 2,400 feet in the SE1/4 section 23, T. 6 S., R. 1 W., of the Copper River Meridian. This occurrence is approximately located, perhaps to within one-half mile. It is locality 85 of Cobb and Matson (1972) and locality 66 of Winkler and others (1981 [OFR 80-892-B]).|
Geologic descriptionOld placer gold workings are present on this creek (Mulligan, 1974). Earlier references to Boulder Creek mostly referred to lode prospecting in the general area (Cobb, 1979 [OFR 79-1241]). Bedrock in the general area is greenschist-facies metaflysch of the Late Cretaceous Valdez Group (Winkler and others, 1981 [OFR 80-892-A]). Gold-bearing quartz veins are widespread through the Valdez Group in the southern Valdez quadrangle (Cobb and Matson, 1972).
|Geologic map unit||(-145.351675435874, 61.3327017715595)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Age of mineralization||Holocene.|
|Workings or exploration||Small-scale surface placer gold mining has occurred on this creek (Mulligan, 1974).|
|Indication of production||Yes; small|
Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Valdez quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1241, 167 p.
Cobb, E.H., and Matson, N.A., Jr., 1972, Metallic mineral resources map of the Valdez quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-438, 1 sheet, scale 1:250,000.
Mulligan, J.J., 1974, Mineral resources of the Trans-Alaska Pipeline corridor: U.S. Bureau of Mines Information Circular 8626, 24 p., 9 sheets, scale 1:250,000.
Winkler, G.R., Miller, R.J., MacKevett, E.M., Jr., and Holloway, C.D., 1981, Map and summary table describing mineral deposits in the Valdez quadrangle, southern Alaska: U.S. Geological Survey Open-File Report 80-892-B, 2 sheets, scale l:250,000.
|Reporters||Travis L. Hudson|
|Last report date||12/14/2001|