|Quadrangle map, 1:250,000-scale||SI|
|Quadrangle map, 1:63,360-scale||A-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Bittenbender and others (1999; location P-117) and Cobb (1972; 1978, location 58) locate the Haley and Hanlon prospect at an elevation of about 450 feet just east of Herring Cove, in the NW1/4SW1/4 sec. 2, T. 56 S., R. 64 E. The US Bureau of Land Management (2002, MAS no. 0021140042) locates the prospect at an elevation of about 850 feet about a mile to the northeast. This site is plotted at the location of Bittenbender and others and Cobb, the more likely of the two. The location is probably accurate to within 0.5 mile.|
Geologic descriptionThe rocks in the vicinity of this prospect are part of the Jurassic and Triassic, Khaz Formation which consists of graywacke, greenschist, metachert, phyllite, and minor limestone (Loney and others, 1975). This prospect consists of a 15-foot adit driven along a fault in hornblendite (Kennedy and Walton, 1946 [B947-C], B 947-D]) Hornblendite is not typical of the Khaz Formation and Loney and others (1975) do not map any hornblendite in this area. Masses of pyrite with minor chalcopyrite occur in the fault in the adit; the largest such mass is 10 inches wide and 2 to 3 feet long. A sample contained 0.99 percent copper, 0.20 percent nickel, and 0.09 percent cobalt. The prospect was not found by Bittenbender and others (1999).
|Geologic map unit||(-135.197362802214, 57.0402378270618)|
|Mineral deposit model||Masses of pyrrhotite with chalcopyrite along a fault.|
|Age of mineralization||Triassic or younger based on the age of the host rocks.|
|Workings or exploration||A 15-foot adit was driven on the property prior to 1946.|
|Indication of production||None|
Bittenbender, P., Still, J.C., Maas, K., and McDonald, M., Jr., 1999, Mineral resources of the Chichagof and Baranof Islands area, southeast Alaska: Bureau of Land Management, BLM-Alaska Technical Report 19, 222 p.
Cobb, E.H., 1972, Metallic mineral resources map of the Sitka quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-467, scale 1:250,000.
Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Sitka quadrangle: U.S. Geological Survey Open-File Report 78-450, 124 p.
Kennedy, G.C., and Walton, M.S., 1946, Nickel investigations in southeastern Alaska: U.S. Geological Survey Bulletin 947-C, p. 39-64.
Kennedy, G.C., and Walton, M.S., Jr., 1946, Geology and associated mineral deposits of some ultrabasic rock bodies in southeastern Alaska: U.S. Geological Survey Bulletin 947-D, p. 65-84.
Loney, R.A., Brew, D.A., Muffler, L.J.P., and Pomeroy, J.S., 1975, Reconnaissance geology of Chichagof, Baranof, and Kruzof Islands, southeastern Alaska: U.S. Geological Survey Professional Paper 792, 105 p.
U.S. Bureau of Land Management, 2002, Alaska mineral locations database report (Sitka quadrangle), July 2, 2002, 205 p. [http://imcg.wr.usgs.gov/dem.html]
|Reporters||Donald Grybeck (U.S. Geological Survey)|
|Last report date||5/5/2005|