Quadrangle map, 1:250,000-scale | SR |
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Quadrangle map, 1:63,360-scale | B-6 |
Latitude | 60.4895 |
Longitude | -149.2199 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | The occurrence is located about three-quarters of a mile from the north side of Grant Lake at an elevation of about 3,000 feet. It is situated in the SE1/4 section 26, T. 5 N., R. 1 E., of the Seward Meridian. This is location 67 of Cobb and Tysdal (1980) and location S-229 of Jansons and others (1984). This location is accurate to within a quarter of a mile. |
Geologic descriptionThe occurrence consists of abundant thin quartz veins in a reddish-brown schist that is mapped as the Valdez Group of Late Cretaceous age (Tysdal, 1978 [MF-880A]). The veins are within a shear zone that may be associated with the Placer River fault system. A single grab sample contained 3 ppm silver, 1,000 ppm copper, 700 ppm vanadium, 500 ppm chrome, 300 ppm cobalt, 200 ppm zinc, and 100 ppm nickel (Tysdal, 1978 [MF-880-A]). | |
Geologic map unit | (-149.222000804868, 60.4889114209861) |
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Age of mineralization | Cretaceous or younger; the veins cut rocks of the Valdez Group of Late Cretaceous age. |
Workings or exploration | A single grab sample contained 3 ppm silver, 1,000 ppm copper, 500 ppm chrome, 700 ppm vanadium, 300 ppm cobalt, and 200 ppm zinc (Tysdal, 1978 [MF-880-A]). |
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Indication of production | None |
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 and Carol S. Huber (Anchorage) |
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Last report date | 1/30/2002 |