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Moonlight

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Sb
Other commodities Ag; Cu; Pb; Zn
Ore minerals stibnite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale DN
Quadrangle map, 1:63,360-scale C-1
Latitude 63.6793
Longitude -150.4685
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 3250 feet, on the crest of a ridge approximately one mile southwest of the junction of Canyon Creek and Moonlight Creek. It is approximately at the midpoint of the section line between sections 21 and 28, T. 14 S., R. 15 W., Fairbanks Meridian. The site coincides with number 64 of Bundtzen, Smith, and Tosdal (1976), 102 of Thornsberry, McKee, and Salisbury (1984), and 25 of MacKevett and Holloway (1977).

Geologic setting

Geologic description

This occurrence consists of a stibnite-quartz gash vein in Birch Creek Schist, near a contact with the Keevy Peak Formation (Bundtzen, 1981). The vein is roughly parallel to the schistosity of the country rocks. It is less than a foot thick and is exposed in outcrop for about 6 feet. Assays of the vein
show a trace of gold, as much as 0.33 ounce of silver per ton, 65 percent antimony, and 0.74 percent lead, and detectable copper, lead, and zinc (Bundtzen, Smith, and Tosdal, 1976).
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).

Production and reserves

Workings or exploration The deposit was discovered during mapping of the Kantishna district by the Alaska Division of Geological & Geophysical Surveys (Bundtzen, Smith, and Tosdal, 1976). There are no workings.
Indication of production None

Additional comments

The occurrence is in Denali National Park and Preserve.

References

MRDS Number A011295

References

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.
MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.
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.
Reporters C.C. Hawley
Last report date 12/26/2000