|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 about 500 feet west of the top of hill 4372 in the SW 1/4 SW1/4 section 15, T. 15 S., R. 16 W., Fairbanks Meridian. The location is accurate for a galena-bearing quartz vein, but there may be at least two other mineral showings near this site. Subject to this qualification, the prospect corresponds to number 60 of Bundtzen, Smith, and Tosdal (1976), 282 of Hawley and Associates (1978), 67 of Bundtzen (1981), and 95 of Thornsberry, McKee, and Salisbury (1984).|
The country rocks in the area of this prospect consist of Birch Creek quartzite and mica schist faulted against Spruce Creek metafelsite (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, fig. K-2).Bundtzen, Smith, and Tosdal (1976) described a two-foot-thick, stibnite-galena-sphalerite-quartz vein at this locality. A sample assayed 0.1 ounce of gold per ton, 48.5 ounces of silver per ton, 0.21 percent copper, 2.1 percent lead, 0.5 percent antimony, and 2.15 percent arsenic. In 1983, Thornsberry, McKee, and Salisbury (1984, v. 2, occurrence 95) mapped a 2- to 3-foot-thick, steeply dipping quartz vein that strikes N75W. The vein assayed 0.23 ounce of gold per ton, 51.3 ounces of silver per ton, 0.33 percent copper, 21.5 percent lead, 14.0 percent zinc, 0.39 percent antimony, and 2.85 percent arsenic.
|Geologic map unit||(-150.643886381862, 63.6104014460549)|
|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 area was mapped and sampled by Bundtzen, Smith, and Tosdal (1976), Hawley and Associates (1978), and Thornsberry, McKee, and Salisbury (1984). Bundtzen's and Hawley's parties found no evidence of previous prospecting at this site. Thornsberry's party found several small pits; it is possible that that their location is a few hundred feet from the locality visited in the earlier investigations.|
|Indication of production||None|
Additional commentsThe prospect is in Denali National Park and Preserve.
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.
Bundtzen, T.K., Smith, T.E., and Tosdal, R.M., 1976, Progress report--Geology and mineral deposits of the Kantishna Hills: Alaska Division of Geological and Geophysical Surveys Open-File Report AOF-98, 80 p., 2 sheets, scale 1:63,360.
Cox, D.P., and Singer, D.A., eds., 1986, Mineral deposit models: U.S. Geological Survey Bulletin 1693, 379 p.
Hawley, C. C. and Associates, Inc, 1978, Mineral appraisal of lands adjacent to Mt. McKinley National Park, Alaska: U. S. Bureau of Mines Open-File Report 24-78, 275 p. (paged by sections).
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||5/5/2001|