Neka (ARDF #JU246) Cu, Pb, Zn

Neka

Prospect, Inactive

Commodities and mineralogy

Main commodities	Cu; Pb; Zn
Gangue minerals	quartz

Geographic location

Quadrangle map, 1:250,000-scale	JU
Quadrangle map, 1:63,360-scale	A-6
Latitude	58.1272
Longitude	-135.8197
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	The Neka prospect is at an elevation of approximately 2,000 feet on the divide between Humpback Creek and a headwater tributary of the Neka River. It is 2 miles east-southeast of Otter Lake at about the center of E1/2 section 19, T. 43 S., R. 59 E. of the Copper River Meridian. The location is accurate within 1/4 mile.

Geologic setting

Geologic description This prospect consists of a 1.5- to 3.5-foot-thick quartz vein exposed for over 50 feet (Bittenbender and others, 1999). Samples contained up to 6.3 percent copper, 0.38 percent lead, and 1.9 percent zinc (Bittenbender and others, 1999). Wells and others (1986) report claims at this site in 1957. No other information available. The country rocks in the general area are mainly Silurian, clastic sedimentary rocks, Silurian to Upper Devonian limestone, Upper Devonian andesitic and basaltic volcanic rocks, and Mississippian limestone (Loney and others, 1975; Gehrels and Berg, 1994).
Geologic map unit	(-135.821515313949, 58.126852975355)

Geologic description

This prospect consists of a 1.5- to 3.5-foot-thick quartz vein exposed for over 50 feet (Bittenbender and others, 1999). Samples contained up to 6.3 percent copper, 0.38 percent lead, and 1.9 percent zinc (Bittenbender and others, 1999). Wells and others (1986) report claims at this site in 1957. No other information available.

The country rocks in the general area are mainly Silurian, clastic sedimentary rocks, Silurian to Upper Devonian limestone, Upper Devonian andesitic and basaltic volcanic rocks, and Mississippian limestone (Loney and others, 1975; Gehrels and Berg, 1994).

Geologic map unit

(-135.821515313949, 58.126852975355)

Production and reserves

Workings or exploration	Wells and others (1986) report claims at this site in 1957. No other information available.
Indication of production	None

References

References Bittenbender, P., Still, J.C., Maas, K., and McDonald, M., Jr., 1999, Mineral resources of the Chichagof and Baranof Islands area, southeast Alaska: Bureau of Land Management, BLM-Alaska Technical Report 19, 222 p. Gehrels, G.E., and Berg, H.C., 1994, Geology of southeastern Alaska, in Plafker, George, and Berg, H. C., eds., The geology of Alaska: Geological Society of America, DNAG, The geology of North America, Vol. G-1, p. 451-467. Loney, R.A., Brew, D.A., Muffler, L.J. B., and Pomeroy, J.S., 1975, Reconnaissance geology of Chichagof, Baranof, and Kruzof Islands, southeastern Alaska: U.S. Geological Survey Professional Paper 792, 105 p. Wells, D.E., Pittman, T.L., Brew, D.A. and Douglass, S.L., 1986, Map and description of the mineral deposits in the Juneau, Taku River, Atlin, and part of the Skagway quadrangles, Alaska: U.S. Geological Survey Open-File Report 85-717, 332 p., 1 sheet, scale 1:250,000.
Reporters	J.C. Barnett and L.D. Miller (Juneau, Alaska )
Last report date	12/15/2001