Unnamed (west part of ridge between Moose Creek and Eureka Creek) (ARDF #MM134) Au

Unnamed (west part of ridge between Moose Creek and Eureka Creek)

Prospect, Inactive

Commodities and mineralogy

Main commodities	Au
Other commodities	Ag; As
Ore minerals	arsenopyrite; pyrite
Gangue minerals	quartz

Geographic location

Quadrangle map, 1:250,000-scale	MM
Quadrangle map, 1:63,360-scale	C-2
Latitude	63.5303
Longitude	-150.8929
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	This unnamed prospect is at an elevation of about 3500 feet on the crest of the western part of the ridge that separates Eureka and Moose Creeks. The prospect is west of the head of No Name Creek, about in the center of the NW1/4 of section 17, T. 16 S., R. 17 W., Fairbanks Meridian. The location is accurate within 500 feet. The site corresponds to number 42 of Bundtzen, Smith, and Tosdal (1976), 142 of Hawley and Associates (1978), and 53 of Thornsberry, McKee, and Salisbury (1984).

Geologic setting

Geologic description The country rock at this prospect is mainly quartz-mica schist of the upper Precambrian Birch Creek Schist (Bundtzen, 1981; Hawley and Associates, 1978). The deposit consists of a weakly auriferous quartz vein that contains arsenopyrite and pyrite. Samples assay about 0.01 to 0.03 ounce of gold per ton, small amounts of silver, and up to 0.99 percent arsenic. According to Bundtzen (1981), the vein strikes N 40 W and is vertical. Hawley and Associates (1978) mapped a vein that appears to strike ENE and dip steeply NW.
Geologic map unit	(-150.895183660005, 63.5297949473737)
Mineral deposit model	Weakly auriferous, low-sulfide quartz vein (Cox and Singer, 1986; model 36a).
Mineral deposit model number	36a
Age of mineralization	The deposit is assumed to be Eocene (see record MM091).

Production and reserves

Workings or exploration	The prospect was explored by single pit, since sloughed.
Indication of production	None
Additional comments The prospect is in Denali National Park and Preserve.

References

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. 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.
Reporters	C.C. Hawley
Last report date	5/1/2001