Main commodities | Au |
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Other commodities | Cu |
Ore minerals | chalcopyrite; gold; pyrite; pyrrhotite |
Gangue minerals | quartz |
Quadrangle map, 1:250,000-scale | SR |
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Quadrangle map, 1:63,360-scale | D-5 |
Latitude | 60.7778 |
Longitude | -148.664 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | This occurrence is located just east of the town of Whitter along the road that leads to Cove Creek. It is in the SE1/4 section 13, T. 8 N., R. 4 E., of the Seward Meridian. This is location S-179 of Jansons and others (1984) and is accurate to within a quarter of a mile. |
Geologic descriptionThis occurrence consists of two veins hosted in slate and quartzite of the Valdez Group of Late Cretaceous age (Jansons and others, 1984). One vein located in a road cut, is 2 to 3 inches wide and contains pyrite. The second vein crops out in the road bed; it is 4 to 16 inches wide and contains chalcopyrite, gold, pyrite, and pyrrhotite. Six grab samples from the road cut assayed by the U.S. Bureau of Mines contained less than 1 ppm gold. One grab sample from the vein in the road bed contained 2.9 ppm gold (Hoekzema and Sherman, 1983). | |
Geologic map unit | (-148.666124934133, 60.7772172052863) |
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Mineral deposit model | Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a) |
Mineral deposit model number | 36a |
Age of mineralization | Cretaceous or younger; the veins cut rocks of the Valdez Group of Late Cretaceous age. |
Workings or exploration | The U.S. Bureau of Mines sampled this occurrence in 1981 and collected seven grab samples. The samples contained from nil to 2.9 ppm gold and less than 1 ppm silver (Jansons and others, 1984). |
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Indication of production | None |
Additional commentsThis occurrence is within the road cut and is probably within the right-of-way of the road and hence is closed to mineral entry. |
ReferencesHoekzema, R.P., and Sherman, G.E., 1983, Mineral investigations in the Chugach National Forest, Alaska (Peninsula study area): U.S. Bureau of Mines in-house report; held at U.S. Bureau of Land Management Alaska State Office, Anchorage, 524 p.
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Reporters | Jeff A. Huber (Anchorage) |
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Last report date | 3/7/2000 |