|Quadrangle map, 1:250,000-scale||VA|
|Quadrangle map, 1:63,360-scale||B-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is on a unnamed north tributary to Bridge Creek at an elevation of about 4,500 feet. It is about 2.4 miles north-northwest of the east end of Summit Lake in the NE1/4 section 20, T. 6 S., R. 7 E., of the Copper River Meridian. This occurrence is probably located to within one-half mile. It is locality 106A of Winkler and others (1981 [OFR 80-892-B]).|
Geologic descriptionWinkler and others (1981 [OFR 80-892-B]) report that copper and nickel sulfides are disseminated in mafic rocks of the Haley Creek terrane (Winkler and others, 1981 [OFR 80-892-A]). The polydeformed Haley Creek terrane consists of metasedimentary rocks, including marble and metaplutonic rocks that range from peridotite to trondhjemite (Winkler and others, 1981 [OFR 80-892-A]). The protolith ages are not known but much deformation and recrystallization of the Haley Creek terrane probably occurred in the mid-Cretaceous or later.
|Geologic map unit||(-144.179774090087, 61.340328711711)|
|Mineral deposit model||Magmatic disseminations and segregations of copper and nickel sulfides in mafic rocks|
|Age of mineralization||Not known; the protolith ages of metasedimentary and metaplutonic rocks in the Haley Creek terrane are not known, but much deformation and recrystallization probably occurred in the mid-Cretaceous or later (Winkler and others, 1981 [OFR 80-892-A]).|
|Workings or exploration||Only surface reconnaissance.|
|Indication of production||None|
Additional commentsThis occurrence is in Wrangell-St. Elias National Park.
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|