|Ore minerals||chalcopyrite; pyrrhotite|
|Quadrangle map, 1:250,000-scale||KR|
|Quadrangle map, 1:63,360-scale||B-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This site is located 4.9 miles north of Anvil Mountain is sec. 33, T. 32 S., R. 33 W., of the Seward Meridian (Foley and Barker, 1985, figure 26 locality 16G; Foley and others, 1989, locality 32). Site is location is accurate to within several hundred feet.|
At this mineral occurrence, one of several within the Halibut Bay ultramafic complex, chalcopyrite and pyrrhotite are present within a 3-foot-wide zone of pyroxenite. A sample of this material contained 2,000 ppm copper and traces of gold, platinum, and palladium (Foley and Barker, 1985, table 14). Nickel content was not determined.The Halibut Bay ultramafic complex, consisting mostly of dunite, gabbro, pyroxenite, and peridotite, occurs within sedimentary units of the Uyak formation of Cretaceous age.
|Geologic map unit||(-154.597328401814, 57.358274614333)|
|Mineral deposit model||Synorogenic-synvolcanic nickel-copper (Cox and Singer, 1986; model 7a?)|
|Mineral deposit model number||7a?|
|Workings or exploration||A grab sample contained 2000 ppm copper and traces of gold, platinum, and palladium.|
|Indication of production||None|
Additional commentsSite is located within Kodiak National Wildlife Refuge.
Foley, J.Y., and Barker, J.C., 1985, Chromite deposits along the Border Ranges fault; Part 1 -- Field investigations and descriptions of chromite deposits: U.S. Bureau of Mines Information Circular 8990, 57 p.
|Reporters||S.H. Pilcher (Anchorage)|
|Last report date||9/6/1998|