|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||B-7|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is located on the west-northwest flank of peak 5309 north of the lower ice field at an elevation of approximately 4,100 feet. It is in the SE1/4 section 15, T. 3 N., R. 2 W., of the Seward Meridian. This is location S-218 of Jansons and others (1984). This location is accurate to within 1,000 feet.|
Geologic descriptionThe occurrence consists of several parallel, vuggy, hematite-stained quartz-calcite veins containing small euhedral quartz crystals and numerous rock fragments. The veins are generally parallel to well-bedded siltstone that strikes N55E and dip 55SE. Nelson and others (1985) have mapped this area as undivided sedimentary rock of the Valdez Group of Late Cretaceous age. A single sample of three veins contained no detectable gold, 0.1 ppm silver, 27 ppm copper, 11 ppm lead, and 44 ppm zinc (Hoekzema and Sherman, 1983).
|Geologic map unit||(-149.602559097778, 60.344236149017)|
|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.|
|Alteration of deposit||Veins are hematite-stained.|
|Workings or exploration||No workings or improvements are reported in the literature. A single sample of three veins contained no detectable gold, 0.1 ppm silver, 27 ppm copper, 11 ppm lead, and 44 ppm zinc (Hoekzema and Sherman, 1983).|
|Indication of production||None|
Additional commentsThis occurrence was discovered by the U.S. Bureau of Mines.
Hoekzema, 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.
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.
|Reporters||Jeff A. Huber and Carol S. Huber (Anchorage)|
|Last report date||12/10/2001|