|Quadrangle map, 1:250,000-scale||CH|
|Quadrangle map, 1:63,360-scale||D-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This site is at an elevation of about 4,300 feet, approximately 5 3/4 miles north-northwest of the west end of Reds Lake (SW1/4 sec. 28, T. 36 N., R. 5 W., of the Fairbanks Meridian). This site corresponds to unnamed loc. 78 in DeYoung (1978) and is included with loc. 50 in Schmidt (1997). The location is accurate within a 1/2-mile radius.|
Geologic descriptionThis occurrence is described only as copper sulfides and/or malachite-azurite stains in Devonian limestone and siltstone overlying the Skajit Limestone (Brosgé and Reiser, 1964). A small body of greenstone is nearby. Schmidt (1997, loc. 50) includes this prospect in a group of three, presumably similar deposits. They consist of quartz veinlets containing malachite-azurite plus or minus pyrite, chalcopyrite, and pyrrhotite in the Silurian and Devonian Skajit(?) Limestone and overlying siltstone and limestone (Beaucoup Formation?). No other information is available.
|Geologic map unit||(-148.692770209225, 67.9096151401512)|
|Mineral deposit model||Polymetallic veins? (Cox and Singer, 1986; model 22c?).|
|Mineral deposit model number||22c?|
|Indication of production||None|
Cobb, E.H., 1972, Metallic mineral resources map of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-457, 1 sheet, scale 1:250,000.
Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Chandalar and Wiseman quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-340, 205 p.
Cobb, E.H., and Cruz, E.L., 1983, Summaries of data and lists of references to metallic and selected nonmetallic mineral deposits in the Chandalar quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-278, 91 p.
DeYoung, J.H., Jr., 1978, Mineral resources map of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-878-B, 2 sheets, scale 1:250,000.
Grybeck, Donald, 1977, Known mineral deposits of the Brooks Range, Alaska: U.S. Geological Survey Open-File Report 77-166C, 45 p., 1 sheet, scale 1:1,000,000.
Schmidt, J.M., 1997, Shale-hosted Zn-Pb-Ag and barite deposits of Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral deposits of Alaska, 1997: Economic Geology Monograph 9, p. 35-65.
|Reporters||J.M. Britton (Anchorage)|
|Last report date||11/17/1999|