|Quadrangle map, 1:250,000-scale||MF|
|Quadrangle map, 1:63,360-scale||C-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The deposit is probably on the south slope of a 7200-foot mountain about 3.5 miles south-southeast of the peak of Mt. LaPerouse in the NE 1/4, SW 1/4, section 6, T. 39 S., R. 51 E., of the Copper River Meridian. The location is based on a description by Leo Mark-Anthony (1977), but it is uncertain because the description of the site reported in Kimball and others (1978, location 14) does not match Mark-Anthony's elevation or approximate coordinates.|
Geologic descriptionBased on its reported location, the occurrence is in the central part of the Crillon-LaPerouse layered mafic-ultramafic intrusion of Tertiary age. The occurrences were described as 'lenses of nickel-bearing pyrrhotite in diorite within the mafic intrusion' (Mark-Anthony, 1977; also, communication Leo Mark-Anthony, 1998). A sample collected by Mark-Anthony contained 0.83 percent nickel and 0.18 percent copper. Copper is abundant enough to form a separate phase, probably chalcopyrite.
|Geologic map unit||(-137.051909312591, 58.5096329301)|
|Mineral deposit model||Disseminated copper and nickel-bearing minerals in dioritic phase? of layered mafic intrusive.|
|Age of mineralization||Tertiary.|
|Workings or exploration||Surface exposure of mineralized rock; no workings.|
|Indication of production||None|
|Reserve estimates||Possible reserves contained in sulfide-bearing lenses as much as 10 feet thick and traceable for 500 feet.|
Additional commentsChugach terrane. The location is in Glacier Bay National Park and Preserve.
Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources, in Brew, D. A., and others, Mineral resources of the Glacier Bay National Monument wilderness study area, Alaska: U.S. Geological Survey Open-File Report 78-494, p. C1-C375.
Mark-Anthony, Leo, 1977, Maps and notes on investigations in Glacier Bay, 1958-1960. (Unpublished material available at U.S. Bureau of Land Management library, Juneau, Alaska).
|Reporters||C.C. Hawley (Hawley Resource Group)|
|Last report date||4/5/1999|