|Quadrangle map, 1:250,000-scale||MM|
|Quadrangle map, 1:63,360-scale||C-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This prospect is at an elevation of about 3850 feet on the crest of the ridge that separates the head of Rainy Creek from the West Fork of Glen Creek. It is in the NW1/4 SE /4 section 2, T. 16 S., R. 17 W., Fairbanks Meridian. The location is accurate within 500 feet.|
Geologic descriptionThe country rock in the area of this prospect is primarily metafelsite schist of the lower Paleozoic Spruce Creek sequence; float of Tertiary basalt occurs nearby (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, fig. K-2). The deposit consists of anastomosing, pyrite- and stibnite-bearing quartz-calcite-tourmaline veins. The veins are in a zone several feet wide that can be traced easterly in a series of pits and an adit, all sloughed or caved. A grab sample assayed 4.55 percent lead, 0.064 ounce of gold per ton, 97.2 ounces of silver per ton, and 1.8 percent antimony. Copper, zinc, and arsenic contents are each in the 0.X percent range. The lead assay indicates the presence either of galena or another lead-bearing mineral.
|Geologic map unit||(-150.787283116871, 63.5550973452653)|
|Mineral deposit model||Polymetallic vein (Cox and Singer, 1986; model 22c).|
|Mineral deposit model number||22c|
|Age of mineralization||The deposit is assumed to be Eocene (see record MM091).|
|Workings or exploration||The deposit was explored by several pits and a short adit, since caved.|
|Indication of production||Undetermined|
Additional commentsThe prospect is in Denali National Park.
Bundtzen, T.K., 1981, Geology and mineral deposits of the Kantishna Hills, Mt. McKinley quadrangle, Alaska: M. S. Thesis, University of Alaska, College, Alaska, 238 p.
Cox, D.P., and Singer, D.A., eds., 1986, Mineral deposit models: U.S. Geological Survey Bulletin 1693, 379 p.
Thornsberry, V. V., McKee, C. J., and Salisbury, W. G., eds, 1984, 1983 Mineral Resource Studies: Kantishna Hills and Dunkle Mine Areas, Denali National Park and Preserve, Alaska: U. S. Bureau of Mines Open-File Report 129-84. 3 Volumes: v. 1, Text; v. 2, Appendices; v. 3, Maps. Prepared by Salisbury & Dietz, Inc., Spokane, WA.
|Last report date||5/2/2001|