|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 location of this prospect, which may coincide with that of the Lucky Jim prospect (Cobb, 1980 [OFR 80-363]), is at an elevation of about 4100 feet about 0.2 mile northeast of the top of Spruce Peak. The location is accurate; the correlation with the Lucky Jim prospect is uncertain.Davis (1923), who first described the Lucky Jim prospect, did not specify its location. A prospect north of Spruce Peak is called Lucky Jim(?) by Bundtzen, Smith, and Tosdal (1976, occurrence 57), as is mineral deposit 263 by Hawley and Associates (1978). Apparently, the same prospect is number 65 of Bundtzen (1981), who called it the Mammoth or Lucky Jim(?). A prospect called Mammoth or Lucky Jim is occurrence 87 of Thornsberry, McKee, and Salisbury (1984). Regardless of the location of the Lucky Jim prospect, the correlation of the Mammoth with the Lucky Jim is unlikely. The Mammoth almost certainly is the same as the North Star prospect (see MM053).
This deposit consists of a poorly exposed quartz vein in metafelsite or greenschist (meta-andesite) of the lower Paleozoic Spruce Creek sequence (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, fig. K-2).At about this location, Davis (1923, p. 132) described a foot-thick, 'rusty' quartz vein that contains galena and chalcopyrite, and pans free gold. At what may be the same site, Bundtzen, Smith, and Tosdal (1976) reported a N40E-trending, poorly-exposed zone containing quartz; and Thornsberry, McKee, and Salisbury (1984, v. 2, occurrence 87) mapped a N80E-striking vein that contains traces of gold and silver.
|Geologic map unit||(-150.699684158887, 63.5827996655741)|
|Mineral deposit model||Polymetallic veins (Davis, 1923) or low-sulfide Au-quartz veins (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984) (Cox and Singer, 1986; models 22c and 36a).|
|Mineral deposit model number||22c or 36a|
|Age of mineralization||The Lucky Jim vein described by Davis (1923) is probably Eocene (see record MM091).|
|Alteration of deposit||Iron-oxide alteration.|
|Workings or exploration||The Lucky Jim vein was discovered during or before 1921 or before.|
|Indication of production||None|
Additional commentsThe location of the Lucky Jim prospect described by Davis (1923) is uncertain. The area of the 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.
Cobb, E.H., 1980, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Mount McKinley quadrangle, Alaska: U. S. Geological Survey Open-File Report 80-363, 150 p.
Cox, D.P., and Singer, D.A., eds., 1986, Mineral deposit models: U.S. Geological Survey Bulletin 1693, 379 p.
Davis, J. A., 1923, The Kantishna region, Alaska, in Stewart, B. D., Annual Report of the Mine Inspector to the Governor of Alaska, 1922: Alaska Division of Geological and Geophysical Surveys AR-1922.
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||5/1/2001|