|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||The Friday Rim prospect is at an elevation of about 3050 feet on the south flank of the ridge north of Friday Creek . It is in the SE1/4 SE1/4 section 2, T. 16 S., R. 18 W., Fairbanks Meridian. The location is accurate within 500 feet. The prospect corresponds to number 19 of Bundtzen, Smith, and Tosdal (1976) and 30 of Thornsberry, McKee, and Salisbury (1984).|
Geologic descriptionThe Friday Rim prospect area is underlain by quartz-rich Birch Creek schist that dips to the northwest (Hawley and Associates, 1978, fig. 4.1-1(A); Thornsberry, McKee, and Salisbury, 1984, fig. K-2, v. 2). The Birch Creek schist is probably late Precambrian (Bundtzen, 1981). At the prospect, a pit exposes a quartz-siderite vein that contains a little pyrite. Samples of the vein assayed up to 0.05 ounce of gold per ton and small amounts of lead and zinc (Bundtzen, 1981). Near the pit, Hawley and Associates (1978, fig. 4.1-1(A) ) sampled reddish soil (no. 82) that contained slightly anomalous amounts of silver, lead, and zinc. Soil (no. 81) collected a few hundred feet away contained 2.8 ppm silver, 505 ppm lead, and 315 ppm zinc.
|Geologic map unit||(-150.979188490112, 63.551092990841)|
|Mineral deposit model||Low-sulfide quartz-siderite vein.|
|Age of mineralization||The deposit is assumed to be Eocene (see record MM091).|
|Workings or exploration||The vein was explored by a 4 foot by 4 foot by 4 foot pit of unknown date.|
|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.
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||2/9/2001|