Wagner (ARDF #CV005) Cu

Wagner

Prospect, Inactive

Commodities and mineralogy

Main commodities	Cu
Ore minerals	chalcopyrite
Gangue minerals	quartz

Geographic location

Quadrangle map, 1:250,000-scale	CV
Quadrangle map, 1:63,360-scale	D-8
Latitude	60.8899
Longitude	-146.6434
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	The adit of the Wagner prospect is at the 300 foot elevation on the west side of Boulder Bay. The site is in the NE1/4 sec. 28, T. 11 S., R 8 W., of the Copper River Meridian. The location is accurate to within 500 ft. This prospect is shown as #6 in Cobb (1972: MF-392) and as C-89 in Jansons and others (1984).

Geologic setting

Geologic description The country rocks at this prospect are mafic volcanic rocks and sedimentary rocks of the Tertiary Orca Group (Nelson and others, 1985). The deposit consists of quartz-chalcopyrite lenses in a shear zone in graywacke (Cobb, 1979: OFR 79-973). Workings visible in the 1980s consisted of one caved adit (Jansons and others, 1984), originally reported to be 285 feet long (Cobb, 1979: OFR 79-973). A selected grab sample from the dump contained 39 ppm Cu (Jansons and others, 1984).
Geologic map unit	(-146.645411937171, 60.889357214228)
Mineral deposit model	Cyprus massive sulfide (Cox and Singer, 1986; model 24a)
Mineral deposit model number	24a
Age of mineralization	Probably Tertiary based on the age of the host rocks.

Production and reserves

Workings or exploration	Workings visible in the 1980s consisted of one caved adit (Jansons and others, 1984), originally reported to be 285 feet long (Cobb, 1979: OFR 79-973). A selected grab sample from the dump contained 39 ppm Cu (Jansons and others, 1984).
Indication of production	None
Additional comments Nelson and others (1985) interpret the country rocks as accreted ocean crust. Crowe and others (1992; 1993) and Sainsbury (1993) discuss the genesis of the volcanogenic massive sulfide deposits in this area. Chugach Alaska Corporation, Anchorage, Alaska has control of these lands. This site is shown as a 'mine' on the map. Since there was no production from this deposit it is designated herein as a 'prospect.'

References

MRDS Number	A010441
References Capps, S.R., and Johnson, B.L., 1915, The Ellamar district, Alaska: U.S. Geological Survey Bulletin 605, 125 p. Cobb, E.H., 1972, Metallic mineral resources map of the Cordova quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-392, 1 sheet, scale 1:250,000. Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Cordova quadragle, Alaska: U.S. Geological Survey Open-file Report OF 79-973, 73 p. Crowe, D.E., Nelson, S.W., Brown, P.E., Valley, J.W., and Shanks, W.C., III, 1992, Geology and geochemistry of volcanogenic massive sulfide deposits and related igneous rocks, Prince William Sound region, south-central Alaska: Economic Geology, v. 87, no. 7, p. 1722-1746. Crowe, D.E., Nelson, S.W., Brown, P.E., Valley, J.W., and Shanks, W.C., III, 1993, Geology and geochemistry of volcanogenic massive sulfide deposits and related igneous rocks, Prince William Sound, south-central Alaska--Reply: Economic Geology, v. 88, p. 1285-1288. Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral occurrences in the Chugach National Forest, southcentral Alaska: U.S. Bureau of Mines Mineral Land Assessment 5-84, 218 p., 2 sheets, scale 1:250,000. Nelson, S.W., Dumoulin, J. A., and Miller, M.L., 1985, Geologic map of the Chugach National Forest, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1645-B, 16 p., 1 sheet, scale 1:250,000. Sainsbury, C.L., 1993, Geology and geochemistry of volcanogenic massive sulfide deposits and related igneous rocks, Prince William Sound, south-central Alaska, A discussion: Economic Geology, v. 88, p. 1284-1285.
Reporters	S.W. Nelson, Anchorage, AK
Last report date	6/10/2000