Main commodities | Cu |
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Ore minerals | chalcopyrite |
Gangue minerals | quartz |
Quadrangle map, 1:250,000-scale | CV |
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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 descriptionThe 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) |
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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. |
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). |
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Indication of production | None |
Additional commentsNelson 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.' |
MRDS Number | A010441 |
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ReferencesSainsbury, 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.
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Reporters | S.W. Nelson, Anchorage, AK |
Last report date | 6/10/2000 |