Unnamed (ridge between Moose Creek and Eureka Creek) (ARDF #DN129) Zn

Unnamed (ridge between Moose Creek and Eureka Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities	Zn
Other commodities	Cu; Pb
Ore minerals	chalcopyrite; galena; sphalerite
Gangue minerals	actinolite; garnet; quartz; tremolite

Geographic location

Quadrangle map, 1:250,000-scale	DN
Quadrangle map, 1:63,360-scale	C-2
Latitude	63.5331
Longitude	-150.8746
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	This occurrence is between elevations 3500 and 3600 feet on the crest and south flank of the ridge that separates Eureka and Moose Creeks. It is about 1/4 mile east of the head of No Name Creek, in the NE1/4 NE1/4 of section 17, T. 16 S., R. 17 W., Fairbanks Meridian. The location is accurate within 500 feet. The site corresponds to an unnumbered mineral occurrence east of number 42 of Bundtzen, Smith, and Tosdal (1976), to number 143 of Hawley and Associates (1978), and number 54 of Thornsberry, McKee, and Salisbury (1984).

Geologic setting

Geologic description The country rocks in the area of this occurrence are mainly quartz-feldspar schist and quartzite of the upper Precambrian Birch Creek Schist (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, v. 2, occurrence 54). Outcrop is poor. The occurrence consists of a boulder of quartz-garnet-actinolite (tremolite) schist that contains abundant sphalerite and lesser amounts of galena and chalcopyrite. Soil samples collected along the NW trend of the Birch Creek country rocks are anomalous in lead, zinc, antimony, and arsenic (Hawley and Associated, 1978).
Geologic map unit	(, )

Geologic description

The country rocks in the area of this occurrence are mainly quartz-feldspar schist and quartzite of the upper Precambrian Birch Creek Schist (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, v. 2, occurrence 54). Outcrop is poor. The occurrence consists of a boulder of quartz-garnet-actinolite (tremolite) schist that contains abundant sphalerite and lesser amounts of galena and chalcopyrite. Soil samples collected along the NW trend of the Birch Creek country rocks are anomalous in lead, zinc, antimony, and arsenic (Hawley and Associated, 1978).

Geologic map unit

(, )

Production and reserves

Indication of production	None
Additional comments The occurrence 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. 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	4/30/2001