|Quadrangle map, 1:250,000-scale||DN|
|Quadrangle map, 1:63,360-scale||C-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The Eldorado prospect is at an elevation of about 1800 feet, on the north wall of the canyon of Eldorado Creek. It is about 0.3 mile east of the center of section 22, T.16S., R.18W., Fairbanks Meridian. The location is accurate. The prospect is number 37 of Hawley and Associates (1978), 13 of Thornsberry, McKee, and Salisbury (1984), and 13 of Bundtzen (1981).|
Geologic descriptionThis prospect consists of a poorly exposed quartz-carbonate vein about 2 feet thick that strikes approximately northeast and cuts muscovitic marble of uncertain affiliation. The vein contains pyrite and stibnite; kermesite and stibiconite occur as secondary coatings on weathered vein material. The marble is silicified and brecciated. A 2-foot sample across the vein contained 3.2 percent antimony; a selected sample assayed 14.1 percent antimony and 0.81 ounce of silver per ton (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, v. 2, number 13).
|Geologic map unit||(, )|
|Mineral deposit model||Simple stibnite deposit (Cox and Singer, 1986; model 27d).|
|Mineral deposit model number||27d|
|Age of mineralization||The deposit is assumed to be Eocene (see record DN091).|
|Alteration of deposit||Oxidation of antimony minerals.|
|Workings or exploration||The vein is poorly exposed. It was discovered and staked by prospector-miner Jim Fuksa.|
|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.
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||4/20/2001|